25A 30A OWNER S MANUAL. U.S.A.Edition LIT

Transcription

1 25A 30A OWNER S MANUAL U.S.A.Edition LIT

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3 EMU01449 Thank you for choosing a Yamaha outboard motor. This Oner s manual contains information needed for proper operation, maintenance and care. A thorough understanding of these simple instructions ill help you obtain maximum enjoyment from your ne Yamaha. If you have any question about the operation or maintenance of your outboard motor, please consult a Yamaha dealer. In this Oner s Manual particularly important information is distinguished in the folloing ays. Q The Safety Alert Symbol means ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED! TO THE OWNER cc A CAUTION indicates special precautions that must be taken to avoid damage to the outboard motor. NOTE: A NOTE provides key information to make procedures easier or clearer. * Yamaha continually seeks advancements in product design and quality. Therefore, hile this manual contains the most current product information available at the time of printing, there may be minor discrepancies beteen your machine and this manual. If there is any question concerning this manual, please consult your Yamaha dealer. Failure to follo WARNING instructions could result in severe injury or death to the machine operator, a bystander, or a person inspecting or repairing the outboard motor. NOTE: The 25MH, 30EH, 30ER and their standard accessories are used as a base for the explanations and illustrations in this manual. Therefore, some items may not apply to every model. EMU A/30A OWNER'S MANUAL 2001 by Yamaha Motor Corporation, USA 1st Edition, April 2001 All rights reserved. Any reprinting or unauthorized use ithout the ritten permission of Yamaha Motor Corporation, USA is expressly prohibited. Printed in Japan P/N LIT

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5 MA20010 CONTENTS E GENERAL INFORMATION 1 BASIC COMPONENTS 2 OPERATION 3 MAINTENANCE 4 TROUBLE RECOVERY 5 INDEX 6 READ THIS OWNER S MANUAL CAREFULLY BEFORE OPERATING YOUR OUTBOARD MOTOR.

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7 EMB00010 Chapter 1 GENERAL INFORMATION IDENTIFICATION NUMBERS RECORD..1-1 Outboard motor serial number Key number EMISSION CONTROL INFORMATION SAFETY INFORMATION IMPORTANT LABELS BASIC BOATING RULES FUELING INSTRUCTIONS Gasoline (petrol) Engine oil BATTERY REQUIREMENT PROPELLER SELECTION START-IN-GEAR PROTECTION

8 EMU00005 IDENTIFICATION NUMBERS RECORD EMU00007 OUTBOARD MOTOR SERIAL NUM- BER YAMAHA MOTOR CO., LTD. MADE IN JAPAN PAYS D'ORIGINE JAPON The outboard motor serial number is stamped on the label attached to the port side of the clamp-bracket. Record your outboard motor serial number in the spaces provided to assist you in ordering spare parts from your Yamaha dealer or for reference in case your outboard motor is stolen. 1 Outboard motor serial number EMU00008 KEY NUMBER q YAMAHA * If a main key sitch is equipped ith the motor, the key identification number is stamped on your key as shon in the illustration. Record this number in the space provided for reference in case you need a ne key. 1 Key number 1-1

9 25 1 EMU01385 EMISSION CONTROL INFORMATION EMU01386 NORTH AMERICAN MODELS This engine conforms to U.S. Environmental Protection Agency (EPA) regulations for marine SI engines. See the label affixed to your engine for details. 25-3/30 1 Approval label of Emission control certificate This label is attached to the bottom coling Emission control information label EMISSION CONTROL INFORMATION ENGINE FAMILY : THIS ENGINE CONFORMS TO 2001 U.S. EPA REGULATIONS FOR MARINE SI ENGINES. FELs : g/k-hr IDLE SPEED : rpm IN NEUTRAL SPARK PLUG : SPARK PLUG GAP (mm) : Existing Technology ; N/A Manufactured date label This label is attached to the clamp bracket or the sivel bracket. 2 Manufactured date label Manufactured: 1-2

10 EMU00917 Q SAFETY INFORMATION 8 Before mounting or operating the outboard motor, read this entire manual. Reading it should give you an understanding of the motor and its operation. 8 Before operating the boat, read any oner s or operator s manuals supplied ith it and all labels. Be sure you understand each item before operating. 8 Do not overpoer the boat ith this outboard motor. Overpoering the boat could result in loss of control. The rated poer of the outboard should be equal to or less than the rated horsepoer capacity of the boat. If the rated horsepoer capacity of the boat is unknon, consult the dealer or boat manufacturer. 8 Do not modify the outboard. Modifications could make the motor unfit or unsafe to use. 8 Never operate after drinking alcohol or taking drugs. About 50% of all boating fatalities involve intoxication. 8 Have an approved personal flotation device (PFD) on board for every occupant. It is a good idea to ear a PFD henever boating. At a minimum, children and non-simmers should alays ear PFDs, and everyone should ear PFDs hen there are potentially hazardous boating conditions. 8 Gasoline is highly flammable, and its vapors are flammable and explosive. Handle and store gasoline carefully. Make sure there are no gas fumes or leaking fuel before starting the engine. 8 This product emits exhaust gases hich contain carbon monoxide, a colorless, odorless gas hich may cause brain damage or death hen inhaled. Symptoms include nausea, dizziness, and drosiness. Keep cockpit and cabin areas ell ventilated. Avoid blocking exhaust outlets. 8 Check throttle, shift, and steering for proper operation before starting the engine. 8 Attach the engine stop sitch lanyard to a secure place on your clothing, or your arm or leg hile operating. If you accidentally leave the helm, the lanyard ill pull from the sitch, stopping the engine. 8 Kno the marine las and regulations here you ill be boating - and obey them. Refer to the RULES OF THE ROAD section for basic boating rules. 8 Stay informed about the eather. Check eather forecasts before boating. Avoid boating in hazardous eather. 8 Tell someone here you are going: leave a Float Plan ith a responsible person. Be sure to cancel the Float Plan hen you return. 8 Use common sense and good judgment hen boating. Kno your abilities, and be sure you understand ho your boat handles under the different boating conditions you may encounter. Operate ithin your limits, and the limits of your boat. Alays operate at safe speeds, and keep a careful atch for obstacles and other traffic. 8 Alays atch carefully for simmers during the engine operation. 8 Stay aay from simming areas. 1-3

11 8 When a simmer is in the ater near you shift into neutral and shut off the engine. 8 Be informed about boating safety. Additional publications and information can be obtained from many organizations, including the folloing: United States Coast Guard Consumer Affairs Staff (G-BC) Office of Boating, Public, and Consumer Affairs U.S. Coast Guard Headquarters Washington, D.C Boating Safety Hotline: National Marine Manufacturers Association (NMMA) 401 N. Michigan Ave. Chicago, Il Marine Retailers Association of America 155 N. Michigan Ave. Chicago, Il

12 LOCATION 25 q EMB30010 IMPORTANT LABELS WARNING LABELS 25-3/ q 1 WARNING Be sure shift control is in neutral before starting engine. (except 2HP) Do not touch or remove electrical parts hen starting or during operation. Keep hands,hair,and clothes aay from flyheel and other rotating parts hile engine is running. 2 6A WARNING This engine is equipped ith a neutral starting device. The engine ill not start unless the shift control is in neutral position. 6E q

13 EMB40010 BASIC BOATING RULES (Rules of the road) Just as there are rules hich apply hen you are driving on streets and high ays, there are ateray rules hich apply hen you are driving your boat. These rules are used internationally, and are also enforced by the United States Coast Guard and local agencies. You should be aare of these rules, and follo them henever you encounter another vessel on the ater. Several sets of rules prevail according to geographic location, but are all basically the same as the International Rules of the Road. The rules presented here in your Oner s Manual are condensed, and have been provided for your convenience only. Consult your local U.S. Coast Guard Auxiliary or Department of Motor Vehicles for a complete set of rules governing the aters in hich you ill be using your boat. STEERING AND SAILING RULES AND SOUND SIGNALS Whenever to vessels on the ater meet one another, one vessel has the right-ofay; it is called the stand-on vessel. The vessel hich does not have the rightof-ay is called the give-ay or burdened vessel. These rules determine hich vessel has the right-of-ay, and hat each vessel should do. Stand-on vessel The vessel ith the right-of-ay has the duty to continue its course and speed, except to avoid an immediate collision. When you maintain your direction and speed, the other vessel ill be able to determine ho best to avoid you. Give-ay vessel The vessel hich does not have the rightof-ay has the duty to take positive and timely action to stay out of the ay of the Stand-On vessel. Normally, you should not cross in front of the vessel ith the right-of-ay. You should slo don or change directions briefly and pass behind the other vessel. You should alays move in such a ay that the operator of the other vessel can see hat you are doing. The general prudential rule This rule is called Rule 2 in the International Rules and says, In obeying and construing these rules due regard shall be had to all dangers of navigation and collision, and to any special circumstances, hich may render a departure from the above rules necessary in order to avoid immediate danger. In other ords, follo the standard rules except hen a collision ill occur unless both vessels try to avoid each other. If that is the case, both vessels become Give-Way vessels. 1-6

14 RULES WHEN ENCOUNTERING VESSELS There are three main situations hich you may encounter ith other vessels hich could lead to a collision unless the Steering Rules are folloed: Meeting (you are approaching another vessel head-on) Crossing (you are travelling across the other vessel s path) Overtaking (you are passing or being passed by another vessel) In the folloing illustration, your boat is in the center. You should give the right-ofay to any vessels shon in hite area (you are the Give-Way vessel). Any vessels in the shaded area must yield to you (they are the Give-Way vessels). Both you and the meeting vessel must alter course to avoid each other. side. This rule doesn t apply if both of you ill clear one another if you continue on your set course and speed Crossing When to poer driven vessels are crossing each other s path close enough to run the risk of collision, the vessel hich has the other on the starboard (right) side must keep out of the ay of the other. If the other vessel is on your right, you must keep out of its ay; you are the Give-Way vessel. If the other vessel is on your port (left) side, remember that you should maintain course and direction, provided the other vessel gives you the right-of-ay as it should Meeting If you are meeting another poer vessel head on, and are close enough to run the risk of collision, neither of you has the right-of-ay! Both of you should alter course to avoid an accident. You should keep the other vessel on your port (left) Overtaking If you are passing another vessel, you are the Give-Way vessel. This means that 1-7

15 the other vessel is expected to maintain its course and speed. You must stay out of its ay until you are clear of it. Likeise, if another vessel is passing you, you should maintain your speed and direction so that the other vessel can steer itself around you. OTHER SPECIAL SITUATIONS There are three other rules you should be aare of hen driving your boat around other vessels. Narro channels and bends When navigating in narro channels, you should keep to the right hen it is safe and practical to do so. If the operator of a poer-driven vessel is preparing to go around a bend that may obstruct the vie of other ater vessels, the operator should sound a prolonged blast on the histle (4 to 6 seconds). If another vessel is around the bend, it too should sound the histle. Even if no reply is heard, hoever, the vessel should still proceed around the bend ith caution. If you navigate such aters ith your boat, you ill need to carry a portable air horn, available from local marine supply stores. Fishing vessel right-of-ay All vessels hich are fishing ith nets, lines or trals are considered to be fishing vessels under the International Rules. Vessels ith trolling lines are not considered fishing vessels. Fishing vessels have the right-of-ay regardless of position. Fishing vessels cannot, hoever, impede the passage of other vessels in narro channels. Sailing vessel right-of-ay Sailing vessels should normally be given the right-of-ay. The exceptions to this are: 1. When the sailing vessel is overtaking the poer-driven vessel, the poerdriven vessel has the right-of-ay. 2. Sailing vessels should keep clear of any fishing vessel. 3. In a narro channel, a sailing vessel should not hamper the safe passage of a poer-driven vessel hich can navigate only in such a channel. Reading buoys and other markers The aters of the United states are marked for safe navigation by the lateral system of buoyage. Simply put, buoys and markers have an arrangement of shapes, colors, numbers and lights to sho hich side of the buoy a boater should pass on hen navigating in a particular direction. The markings on these buoys are oriented from the perspective of being entered from seaard (the boater is going toards the port). This means that red buoys are passed on the starboard (right) side hen proceeding from open ater into port, and black buoys are to port (left) side. When navigating out of port, your position ith respect to the buoys should be reversed; red buoys should be to port and black buoys to starboard. Many bodies of ater used by boaters are entirely ithin the boundaries of a particular state. The Uniform State Wateray Marking System has been devised for these aters. This system uses buoys and signs ith distinctive shapes and colors to sho regulatory or advisory informa- 1-8

16 tion. These markers are hite ith black letters and orange boarders. They signify speed zones, restricted areas, danger areas, and general information. Remember, markings may vary by geographic location. Alays consult local boating authorities before driving your boat in unfamiliar aters. MAIN CHANNEL " 6" " 7" RB " L" or RG " L" " 5" C " 1" N " 2" SECONDARY CHANNEL MAIN CHANNEL BUOYS " 1" " 3" " 5" " 7" LIGHTED BUOY (Port Hand)` Odd number. increasing toard head of navigation.leave to port (left) proceeding upstream. White Light Green Light 1 1 OR " 4" BUOY COLOR CODE old ne BLACK " 2" " 4" " 6" " 3" RED GREEN LIGHTED BUOY (Starboard Hand)` Even number,increasing toard head of navigation. Leave to starboard (right) proceeding upstream. " A" White Light Red Light 2 2 OR " 2" old ne " 1" " A" LIGHTED SAFE WATER BUOY C " 1" Proceeding toard head of navigation from seaard SECONDARY CHANNEL BUOYS STARTS NEW NUMBERING SYSTEM CAN BUOY Odd number. Leave to port. 1 1 OR No number. Marks midchannel, pass on either side. Letter has no lateral significance, used for identification and location purposes. Top Mark White Light White Light A A OR old ne N " 2" old NUN BUOY Even number. Leave to starboard 2 ne RB " L" RG " L" LIGHTED PREFERRED CHANNEL TO PORT BUOY No number. Topmost band red - preferred channel is to left of buoy. Letter has no lateral significance, used for identification and location purposes. Red or Red Light White Light L L No change old ne

17 MU00016 FUELING INSTRUCTIONS GASOLINE AND ITS VAPORS ARE HIGH- LY FLAMMABLE AND EXPLOSIVE! 8 Do not smoke hen refueling, and keep aay from sparks, flames, or other sources of ignition. 8 Stop engine before refueling. 8 Refuel in a ell-ventilated area. Refuel portable fuel tanks off the boat. 8 Take care not to spill gasoline. If gasoline spills, ipe it up immediately ith dry rags. 8 Do not overfill the fuel tank. 8 Tighten the filler cap securely after refueling. 8 If you should sallo some gasoline inhale a lot of gasoline vapor, or get gasoline in your eyes, get immediate medical attention. 8 If any gasoline spills onto your skin, immediately ash ith soap and ater. Change clothing if gasoline spills on it. 8 Touch the fuel nozzle to the filler opening or funnel to help prevent electrostatic sparks. cc Use only ne clean gasoline hich has been stored in clean containers and is not contaminated ith ater or foreign matter. E 1-10

18 EMU00018 GASOLINE (PETROL) Recommended gasoline: Regular unleaded gasoline ith a minimum octane rating of 86 (Pump Octane Number) = (R+M)/2 If knocking or pinging occurs, use a different brand of gasoline or premium unleaded fuel. If unleaded gasoline is not available, then leaded regular gasoline can be used. EMU00027 Gasohol There are to types of gasohol: gasohol containing ethanol and that containing methanol. Gasohol containing ethanol can be used if ethanol content does not exceed 10% and the fuel meets minimum octane ratings. Gasohol containing methanol is not recommended by Yamaha because it can cause fuel system damage or engine performance problems. EMU00858 ENGINE OIL Recommended engine oil: YAMALUBE 2 STROKE OUTBOARD OIL If the recommended engine oil is not available, another 2-stroke engine oil ith a NMMA-certified TC-W3 rating may be used. 1-11

19 1-12 EMU01430 BATTERY REQUIREMENT cc Do not use a battery that does not meet the specified capacity. If a battery hich differs from the specification is used, the electrical system may perform poorly or be overloaded, causing electrical system damage. cc 8 A battery cannot be connected to models hich do not have a rectifier or rectifier regulator. Models ithout a rectifier or rectifier regulator: 25NMH, 30DMHO, 25JMH 8 If you ish to use a battery ith the above models, install an optional rectifier regulator. Models ith only a rectifier installed: 30DEHO 8 Using a maintenance-free battery ith the above models can shorten the life of the battery significantly. 8 Use caution hen connecting accessories such as fish finders, as they may be damaged by high voltage. Install an optional rectifier regulator or use accessories rated to ithstand 18 volts or higher ith the above models. Consult your Yamaha dealer for details on installing an optional rectifier regulator. Choose a battery for electric start models hich meets the folloing specifications. Minimum cold crank performance 210 Amps at C (0 F) Minimum reserve capacity 40 minutes at 26.7 C (80 F) E

20 MU01395 PROPELLER SELECTION E The performance of your outboard motor ill be critically affected by your choice of propeller, as an incorrect choice could adversely affect performance and could also seriously damage the motor. Engine speed depends on the propeller size and boat load. If engine speed is too high or too lo for good engine performance, this ill have an adverse effect on the engine. Yamaha outboard motors are fitted ith propellers chosen to perform ell over a range of applications, but there may be uses here a propeller ith a different pitch ould be more appropriate. For a greater operating load, a smaller-pitch propeller is more suitable as it enables the correct engine speed to be maintained. Conversely, a larger-pitch propeller is more suitable for a smaller operating load. Yamaha dealers stock a range of propellers, and can advise you and install a propeller on your outboard that is best suited to your application. 1-13

21 10-3/4x17-F 1 23 NOTE: At full throttle and under a maximum boat load, the engine s rpm should be ithin the upper half of the full throttle operating range, as listed in SPECIFICA- TIONS on page 4-1. Select a propeller hich fulfills this requirement. If operating under conditions hich allo the engine s rpm to rise above the maximum recommended range (such as light boat loads), reduce the throttle setting to maintain the rpm in the proper operating range. 1 Propeller diameter (in inches) 2 Propeller pitch (in inches) 3 Type of propeller (propeller mark) Refer to the section CHECKING PRO- PELLER for instructions on propeller removal and installation. EMU01209 START-IN-GEAR PROTECTION 1-14 Yamaha outboard motors or Yamaha approved remote control units are equipped ith start-in-gear protection device(s). This feature permits the engine to be started only hen it is Neutral. Alays select Neutral before starting the engine.

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23 EMC00010 Chapter 2 BASIC COMPONENTS 1 MAIN COMPONENTS OPERATIONS OF CONTROLS AND OTHER FUNCTIONS Fuel tank Gear shift lever Engine stop lanyard sitch Engine stop button Tiller handle Choke knob Recoil starter handle Starter button Remote control Steering friction adjusting scre Trim tab Trim angle adjusting rod Shallo ater lever Tilt lock mechanism Tilt support bar Tilt support lever Top coling lock lever WARNING SYSTEM Overheat arning Oil level arning / oil filter clogging arning

24 EMU01206 MAIN COMPONENTS 25 q e r t!5 y!4 u!2!1!0!3 o i! Recoil starter handle 2 Choke knob 3 Warning lamp 4 Gear shift lever 5 Throttle-control grip/tiller-handle 6 Engine stop button/ Engine stop lanyard sitch 7 Transom-clamp handle 8 Tilt lock lever 9 Cooling ater inlet 0 Propeller q Trim tab (Anode) Anti-cavitation plate e Trim angle adjusting-rod r Rope attachment t Shallo ater lever y Fuel tank * May not be exactly as shon; also may not be included as standard equipment on all models. 2-1

25 EMU /30 MAIN COMPONENTS!9!2!3!4!5!1 q!8 e!7! **!0 o i r t y Top coling 2 Tilt-lock lever 3 Transom-clamp handle 4 Anti-cavitation plate 5 Trim tab 6 Cooling ater inlet 7 Propeller * 8 Battery lead 9 Trim angle adjusting rod 0 Clamp bracket q Wiring harness * Recoil starter handle e Engine stop button/engine stop lanyard sitch r Warning lamp * t Gear shift lever * y Throttle-control grip/tiller handle * u Shallo ater lever * i Rope attachment * o Choke knob * p Remote control box * a Fuel tank * May not be exactly as shon; also may not be included as standard equipment on all models. 2-2

26 EMC20010 OPERATIONS OF CONTROLS AND OTHER FUNCTIONS EMC21012 FUEL TANK If your model as equipped ith a portable fuel tank, its function is as follos. q e r 1 Fuel hose joint 2 Fuel meter(if equipped) 3 Fuel tank cap 4 Air vent scre(if equipped) Fuel hose joint This connector is provided for connecting or disconnecting fuel hose Fuel meter This meter is on the fuel tank cap. It shos current fuel quantity in the fuel tank approximately. Fuel tank cap This cap is for filling fuel. To remove it, turn it counterclockise. Air Vent scre This scre is on the fuel tank cap. To loosen it, turn it counterclockise. e q EMC25010 GEAR SHIFT LEVER (for Tiller control model) Turning the gear-shift lever toards you engages the clutch ith the forard gear so that the boat moves ahead. Turning the lever aay from you engages the reverse gear so that the boat moves astern Neutral 2 Forard 3 Reverse 2-3

27 / EMC28111 ENGINE STOP LANYARD SWITCH (for Tiller control model) The lock-plate on the end of the lanyard must be attached to the engine stop sitch for the engine to run. The lanyard should be attached to a secure place on the operator s clothing, or arm or leg. Should the operator fall overboard or leave the helm, the lanyard ill pull out the lock plate, stopping ignition to the engine. This ill prevent the boat from running aay under poer. q Lock-plate 2 Lanyard 8 Attach the engine stop sitch lanyard to a secure place on your clothing, your arm or leg hile operating. 8 Do not attach the lanyard to clothing that could tear loose. Do not route the lanyard in such a ay that it could become entangled, preventing it from functioning. 8 Avoid accidentally pulling the lanyard during normal operation. Loss of engine poer means the loss of most steering control. Also, ithout engine poer, the boat could slo rapidly. This could cause people and objects in the boat to be thron forard. NOTE: The engine cannot be started ith the lock-plate removed. 2-4

28 /30 EMC27011 ENGINE STOP BUTTON (for Tiller control model) Pushing this button opens the ignition circuit and stops the engine. 3 e q * EMU00062 TILLER HANDLE (for Tiller control model) Moving the tiller handle sideays to adjust the steering direction. In addition, this handle contains the functions as follos. 1 Throttle control grip 2 Throttle indicator 3 Throttle friction adjusting knob/scre EMU00065 Throttle Control Grip The throttle control grip is on the tiller handle. Turn the grip counterclockise to increase speed and clockise to decrease speed q ** EMU00067 Throttle Indicator The fuel consumption curve on the throttle indicator shos the relative amount of fuel consumed for each throttle position. Choose the setting that offers the best performance and fuel economy for the desired operation. 1 Throttle indicator 2-5

29 MU01293 Throttle friction adjusting scre/ knob A friction device in the tiller handle provide resistance to movement of the throttle grip. This is adjustable for operator preference. An adjusting scre/knob is located ithin the tiller handle. E Resistance Increase Decrease Knob/Scre Turn clockise Turn counterclockise When constant speed is desired, tighten the adjusting scre/bolt to maintain the desired throttle setting / * * Do not over tighten the friction adjusting scre/ knob. If there is too much resistance, it may be difficult to move the throttle grip, hich could result in an accident. EMC42010 CHOKE KNOB Pulling out this knob (setting it to ON) supplies a rich mixture required to start the engine. NOTE: The choke knob for Remote control model has the same function as the choke sitch on the remote control box. EMC44010 RECOIL STARTER HANDLE (If equipped) Pull the handle gently until resistance is felt. Then vigorously pull the handle straight out to crank the engine to start it. 2-6

30 30 EMC46010 STARTER BUTTON (for Tiller control model) When you push the starter button, the electric starter motor cranks the engine to start it q y e r t EMU00090 REMOTE CONTROL Both the shifter and the throttle are actuated by the remote control lever. In addition, this remote control also has the electrical sitches. 1 Remote control lever 2 Neutral interlock trigger 3 Neutral throttle lever 4 Main sitch / Choke sitch 5 Engine stop lanyard sitch 6 Throttle friction adjusting scre Remote control lever Moving the lever forard from the Neutral position engages Forard gear. Pulling the lever back from Neutral engages Reverse. The engine ill continue to run at idle until the lever is moved about 35 (a detent can be felt). Moving the lever farther opens the throttle, and the engine ill begin to accelerate. F y u Nq r r t t e R y u 1 Neutral 2 Forard 3 Reverse 4 Shift 5 Fully closed 6 Throttle 7 Fully open 2-7

31 Neutral interlock trigger To shift out of Neutral, the neutral interlock trigger of the remote control lever must first be pulled up. E N q Neutral throttle lever To open the throttle ithout shifting into either Forard or Reverse, place the remote control lever in the Neutral position and lift the neutral throttle lever. NOTE: The neutral throttle lever ill operate only hen the remote control lever is in Neutral. The remote control lever ill operate only hen the neutral throttle lever is in the closed position * 1 Fully open 2 Fully closed OFF ON START EMC48110 Main sitch The main sitch controls the ignition system; its operation is described belo. 8 OFF Electrical circuits sitched off. (The key can be removed.) 8 ON Electrical circuits sitched on. (The key cannot be removed.) 8 START Starter-motor ill turn and start engine. (When the key is released, it returns automatically to ON.) 2-8

32 OFF ON START EMC50310 Choke sitch While the main sitch is being pressed in at ON or START, the choke system ill sitch on, to supply a rich mixture required to start the engine. (When the key is released, it ill sitch off automatically.) q EMU00934 Engine Stop Lanyard Sitch The lock-plate 1 must be attached to the engine stop lanyard sitch for the engine to run. The lanyard 2 should be attached to a secure place on the operator s clothing, or arm or leg. Should the operator fall overboard or leave the helm, the lanyard ill pull out the lock plate, stopping ignition to the engine. This ill prevent the boat from running aay under poer. 8 Attach the lanyard to a secure place on your clothing, your arm or leg hile operating. 8 Do not attach the lanyard to clothing that could tear loose. Do not route the lanyard in such a ay that it could become entangled, preventing it from functioning. 8 Avoid accidentally pulling the lanyard during normal operation. Loss of engine poer means the loss of most steering control. Also, ithout engine poer, the boat could slo rapidly. This could cause people and objects in the boat to be thron forard. 2-9 NOTE: The engine cannot be started ith the lock-plate removed.

33 MU01155 Throttle Friction Adjusting Scre A friction device in the remote control box provides adjustable resistance to movement of the remote control lever, and can be set according to operator preference. An adjusting scre is located on the front of the remote control box Resistance Scre Increase Turn clockise Decrease Turn counterclockise Do not overtighten the friction adjusting scre. If there is too much resistance, it may be difficult to move the lever, hich could result in an accident. E EMD00011 STEERING FRICTION ADJUSTING SCREW(for Tiller control model) A friction device provides resistance to steering movement. This is adjustable for operator preference. An adjusting scre/bolt is located on the sivel bracket EMD00310* Adjustment Resistance Increased Decreased Scre/bolt Turn clockise Turn counterclockise Do not overtighten the friction scre/bolt. If there is too much resistance, it may be difficult to steer, hich could result in an accident. 2-10

34 A B q EMU00113 TRIM TAB The trim tab should be adjusted so that the steering control can be turned to either the right or left by applying the same amount of force An improperly adjusted trim tab may cause difficult steering. Alays test run after the trim tab has been installed or replaced to be sure steering is correct. Be sure you have tightened the bolt after adjusting the trim tab. 1 Trim tab 2 Bolt 3 Cap (If equipped) Boat tends to veer To the left (port side) To the right (starboard side) The fin of trim tab Turn to the left (A in the figure) Turn to the right (B in the figure) cc The trim tab also serves as an anode to protect the engine from electrochemical corrosion. Never paint the trim tab as it ill become ineffective as an anode /30 EMU01297 TRIM ANGLE ADJUSTING ROD The position of the trim angle adjusting rod determines the minimum trim angle of the outboard motor in relation to the transom *

35 25 EMD08010 SHALLOW WATER LEVER (If equipped) 25 Lifting this lever ill tilt the motor up partially to provide more clearance hen operating in shallo ater * 25-3/30 EMD08110 SHALLOW WATER LEVER (If equipped) 25-3/30 Pushing this lever don ill tilt the motor up partially to provide more clearance hen operating in shallo ater * 25 q * EMD44010 TILT LOCK MECHANISM (for Manual tilt model) The tilt-lock mechanism is used to prevent reverse thrust from the propeller lifting the outboard motor hen reversing. To lock it, set the tilt-lock lever in the up position. To release it, push the tilt-lock lever don. 25-3/30 1 Tilt-lock lever q * 2-12

36 25 q EMU00156 TILT SUPPORT BAR 25 The tilt support bar 1 keeps the outboard motor in the tilted up position. E /30 EMD60210 TILT SUPPORT LEVER 25-3/30 To keep the outboard motor in the tiltedup position, lock the tilt support lever to the sivel bracket EMD62010 TOP COWLING LOCK LEVER To remove the engine top coling, push the lock lever donard. Then lift off the coling. When replacing the coling, check to be sure it fits properly in the rubber seal. Then lock the coling again by moving the lever upard. 2-13

37 EMD80010 WARNING SYSTEM cc Do not continue to operate the engine if the arning device has activated. Consult your Yamaha dealer if the problem cannot be located and corrected. 25 EMU00170 OVERHEAT WARNING This engine has an overheat arning device. If the engine temperature rises too high, the arning device ill activate. 25-3/ (2); Included ( ); N/A Activation of arning device The engine speed ill automatically decrease to about 2,000 r/min. The overheat arning indicator ill come on. The buzzer ill sound. Tiller control model Remote control model If the arning system has been activated, stop the engine and check the ater inlet for clogging. 2-14

38 MU00172 OIL LEVEL WARNING / OIL FILTER CLOGGING WARNING This engine has an oil level arning system. If oil level falls belo loer limit, the arning device ill activate. E q (2); Included ( ); N/A Warning device activation The engine speed ill automatically decrease to about 2,000 r/min. The oil level arning indicator ill come on. The buzzer ill sound. If the arning system has been activated, stop the engine and check for the cause. NOTE: The arning for oil filter clogging is similar to the arnings for lo oil level and overheating. For easy troubleshooting, it is advisable to check for engine overheating first, then oil level and finally oil filter clogging. 1 Oil filter Tiller control model Remote control model

39 Oil level arning system 30 The various oil-level arning system functions are as follos: Oil level arning indicator lamp (Bottom coling) OFF Engine oil tank more than 200 cm 3 (0.21 US qt, Imp qt) Remarks No refilling necessary. Red ON 200 cm 3 or less (0.21 US qt, Imp qt) Buzzer sounds in remote control box and engine speed is limited to about 2,000 r/min to help conserve oil. Check oil filter for clogging. Add oil. 2-16

40 -MEMO- E

41 EMF00010 Chapter 3 OPERATION 1 INSTALLATION Mounting the outboard motor Clamping the outboard motor...3-4, 3-5 FILLING FUEL AND ENGINE OIL Filling fuel Filling oil Gasoline (petrol) and oil mixing PRE-OPERATION CHECKS Operation after a long period of storage BREAKING IN (RUNNING IN) ENGINE STARTING ENGINE WARMING UP ENGINE SHIFTING Forard Reverse STOPPING ENGINE TRIMMING OUTBOARD MOTOR Adjusting trim angle CRUISING IN SHALLOW WATER TILTING UP/DOWN CRUISING IN OTHER CONDITIONS Cruising in salt ater Cruising in turbid ater

42 EMF10010 INSTALLATION cc Incorrect engine height or obstructions to smooth ater flo (such as the design or condition of the boat or accessories such as transom ladders/depth finder transducers) can create airborne ater spray hile the boat is cruising. Severe engine damage may result if the motor is operated continuously in the presence of airborne ater spray. NOTE: During ater testing check the buoyancy of the boat, at rest, ith its maximum load. Check that the static ater level on the exhaust housing is lo enough to prevent ater entry into the poerhead, hen ater rises due to aves hen the outboard is not running. 3-1

43 MU00176 MOUNTING THE OUTBOARD MOTOR Improper mounting of the outboard motor could result in hazardous conditions such as poor handling, loss of control, or fire hazards. Observe the folloing: 8 The information presented in this section is intended as reference only. It is not possible to provide complete instructions for every possible boat/motor combination. Proper mounting depends in part on experience and the specific boat/motor combination. 8 Your dealer or other person experienced in proper rigging should mount the motor. If you are mounting the motor yourself, you should be trained by an experienced person. [permanent mounted type] 8 Your dealer or other person experienced in proper outboard motor mounting should sho you ho to mount your motor. [portable type] Mount the outboard motor on the center line (keel line) of the boat, and ensure that the boat itself is ell balanced. Otherise, the boat ill be hard to steer. For boats ithout a keel or hich are asymmetrical, consult your dealer. 1 Center line (keel line) E q

44 Overpoering a boat may cause severe instability. Do not install an outboard motor ith more horsepoer than the maximum rating on the capacity plate of the boat. If the boat does not have a capacity plate, consult the boat manufacturer. E 0~25mm EMU01298 Mounting Height To run your boat at optimum efficiency, the ater-resistance (drag) of the boat and outboard motor must be made as little as possible. The mounting-height of the outboard motor greatly affects the ater-resistance. If the mounting-height is too high, cavitation tends to occur, thus reducing the propulsion; and if the propeller tips cut the air, the engine speed ill rise abnormally and cause the engine to overheat. If the mounting-height is too lo, the ater-resistance ill increase and thereby reduce engine efficiency. Mount the engine so that the anti-cavitation plate is beteen the bottom of the boat and a level 25 mm (1 in.) belo it. NOTE: 8 The optimum mounting height of the outboard motor is affected by the boat/motor combination and the desired use. Test runs at different heights can help determine the optimum mounting height. 8 Refer to the section TRIMMING OUT- BOARD MOTOR for instructions on setting the trim angle of the outboard. 3-3

45 EMF14010 CLAMPING THE OUTBOARD MOTOR 1) Place the outboard on the transom so that it is positioned as close to the center as possible. Tighten the transom clamp scres evenly and securely. Check the clamp-scres for tightness occasionally during operation of the motor as they can ork loose due to engine vibration. Loose clamp scres could allo the motor to move on the transom or fall off the transom. This could cause loss of control and serious injury. Make sure the transom scres are tightened securely. Occasionally check the scres for tightness during operation. 2) An engine restraint cable or chain should be used. Attach one end to the engine restraint cable attachment point and the other to a secure mounting point on the boat. Otherise, the engine could be completely lost if it accidentally falls off the transom

46 q EMU01318 CLAMPING THE OUTBOARD MOTOR 30EH/30ER 1) Place the outboard on the transom so that it is positioned as close to the center as possible. Tighten the transom clamp scres evenly and securely. Check the clamp-scres for tightness occasionally during operation of the motor as they can ork loose due to engine vibration. Loose clamp scres could allo the motor to move on the transom or fall off the transom. This could cause loss of control and serious injury. Make sure the transom scres are tightened securely. Occasionally check the scres for tightness during operation. 2) An engine restraint cable or chain should be used. Attach one end to the engine restraint cable attachment point and the other to a secure mounting point on the boat. Otherise, the engine could be completely lost if it accidentally falls off the transom. Secure the clamp bracket to the transom ith the bolts provided ith the outboard. For details, consult your dealer. Avoid using bolts, nuts or ashers other than those contained in the engine packaging. If used, they must be of at least the same quality of material and strength and must be tightened securely. After tightening, test run the engine and check their tightness Motor mounting parts

47 EMF30010 FILLING FUEL AND ENGINE OIL FILLING FUEL 1) Remove the fuel tank cap. 2) Fill the fuel tank carefully. 3) Close the cap securely after refueling. Wipe up any spilled fuel. Fuel tank capacity: Refer to SPECIFICATIONS on Page 4-1. Ring Free Fuel Additive Gasoline is a precise blend of many different substances, each chosen to give certain characteristics. Gasoline blends have been changing in recent years in response to concerns about pollution and resulting emissions regulations. One of the most obvious changes has been the elimination of lead from most fuels. As gasoline has changed, the amount of additives such as aromatics and oxygenates has increased. These additives are important for the engines in passenger cars, but they can have detrimental effects in marine engines, particularly 2- cycle outboards because of increased deposits in the combustion chamber. When enough deposits collect, piston rings begin sticking. Performance drops and engine ear increases dramatically. 3-6

48 While many additives available may reduce deposits, Yamaha recommends the use of Ring Free Fuel Additive, available from your Yamaha dealer. Ring Free has repeatedly proven its ability to clean combustion deposits from inside the engine, notably the critical piston-ringland area, and fuel system components. Follo product labeling for use instructions EMF32110 FILLING OIL (for Precision blend system model) This engine uses the YAMAHA PRECI- SION BLEND SYSTEM, hich provides superior lubrication by ensuring the proper oil ratio for all operating conditions. No fuel premixing is needed (except during break-in/running-in). Simply pour gasoline into the fuel tank and oil into the oil tank. Convenient indicator segments indicate condition of the oil supply. Refer to oil arning system. To fill the engine oil into the engine oil tank, proceed as follos: Do not add gasoline (Petrol) into the oil tank. Fire or explosion could result. E Engine oil tank capacity: Refer to SPECIFICATION, page

49 30MH 30EH/30ER q q * Manual start model 1) Remove the top coling. 2) Open the oil tank filler cap by pulling the tab. 3) Sloly fill the engine oil into the engine oil tank. 4) After filling, replace the cap securely. 5) Replace the top coling securely. 1 Engine oil tank 2 Oil tank filler cap Electric start model 1) Turn the oil filler access cap on top of the top coling counterclockise and open it. 2) Open the oil tank filler cap by pulling a tab on the cap. 3) Sloly fill the engine oil into the engine oil tank. 4) After filling, replace the all caps securely. 1 Oil filler access cap 2 Oil tank filler cap E

50 q EMF35011 GASOLINE (PETROL) AND OIL MIXING Pre-mix model Engine oil : Gasoline (Petrol) Break-in period 1 : 25 After break-in 1 : 100 1) Pour oil and gasoline into the fuel tank, in that order. 1 Engione oil 2 Gasoline (Petrol) ) Then mix the fuel thoroughly by shaking. 3) Make sure the oil is mixed ith gasoline. cc 8 Avoid using any oil other than the designated type. 8 Use a thoroughly blended fuel-oil mixture. 8 If the mixture is not thoroughly blended, or if the mixing ratio is incorrect, the folloing problems could occur: Lo oil ratio: Lack of oil could cause major engine trouble, such as piston seizure. High oil ratio: Too much oil could cause fouled spark plugs, smoky exhaust, and heavy carbon deposits. 3-9

51 Mixing ratio 25 : 1 Gasoline (Petrol) 1 L 12 L 14 L 24 L (0.26 US gal, (3.2 US gal, (3.7 US gal, (6.3 US gal, 0.22 Imp gal) 2.6 Imp gal) 3.1 Imp gal) 5.3 Imp gal) Engine oil 0.04 L 0.48 L 0.56 L 0.96 L (0.04 US qt, (0.51 US qt, (0.59 US qt, (1.01 US qt, 0.04 Imp qt) 0.42 Imp qt) 0.49 Imp qt) 0.84 Imp qt) Mixing ratio 100 : 1 Gasoline (Petrol) 1 L 12 L 14 L 24 L (0.26 US gal, (3.2 US gal, (3.7 US gal, (6.3 US gal, 0.22 Imp gal) 2.6 Imp gal) 3.1 Imp gal) 5.3 Imp gal) Engine oil 0.01 L 0.12 L 0.14 L 0.24 L (0.01 US qt, (0.13 US qt, (0.15 US qt, (0.25 US qt, 0.01 Imp qt) 0.11 Imp qt) 0.12 Imp qt) 0.21 Imp qt) NOTE: If using a permanently installed tank, pour the oil gradually as the fuel is being added to the tank. 3-10

52 MU00204 PRE-OPERATION CHECKS If any item in the pre-operation check is not orking properly, have it inspected and repaired before operating the outboard motor. Otherise, an accident could occur. cc E Do not start the engine out of ater. Overheating and serious engine damage can occur. EMU00206 Fuel 8 Check to be sure you have plenty of fuel for your trip. 8 Make sure there are no fuel leaks or gasoline fumes. 8 Check fuel line connections to be sure they are tight. 8 Be sure the fuel tank is positioned on a secure, flat surface, and that the fuel hose is not tisted or flattened, or likely to contact sharp objects. EMU00207 Oil 8 Check to be sure you have plenty of oil for your trip. EMU00209 Controls 8 Check throttle, shift, and steering for proper operation before starting the engine. 8 The controls should ork smoothly, ithout binding or unusual free play. 8 Look for loose or damaged connections. 8 Check operation of the starter and stop sitches hen the outboard motor is in the ater. 3-11

53 EMU00210 Engine 8 Check the engine and engine mounting. 8 Look for loose or damaged fasteners. 8 Check the propeller for damage. 30 OIL EMF44010 OPERATION AFTER A LONG PERIOD OF STORAGE (for Precision blend system model) When operating the engine after a long period (12 months) of storage, proceed as follos: 1) Use a 50 : 1 gasoline-oil mixture to start the engine. 2) Start the engine. Leave it idling. 8 Do not touch or remove electrical parts hen starting or during operation. 8 Keep hands, hair, and clothes aay from flyheel and other rotating parts hile engine is running. 30 3) Watch for oil floing through the oil feed pipes. After any air in the oil lines has been expelled, YAMAHA PRECISION BLEND SYSTEM should supply oil normally. If no oil has begun floing after 10 minutes of idling, consult your Yamaha dealer. cc When operating the engine after a long period of storage, be sure to take the above steps; otherise, engine seizure may occur. 3-12

54 MF50211 BREAKING IN (RUNNING IN) ENGINE Your ne engine requires a period of break-in (running-in) to allo mating surfaces of moving parts to ear-in evenly. Correct break-in (running-in) ill help ensure proper performance and longer engine life. cc 8 Failure to follo the break-in (runningin) procedure may result in reduced engine life or even severe engine damage. 8 Premix fuel must be used during breakin (running-in) in addition to oil in the Precision Blend System. E Break-in (running-in) time: 10 hours Break-in (running-in) premix ratio (for Pre-mix model): Gasoline (Petrol) : Engine oil=25 : 1 Refer to Gasoline/Petrol and Oil Mixing. Break-in (running-in) premix ratio (for Precision Blend System model) Gasoline (Petrol) : Engine oil=50 : 1 Mixing ratio 50 : 1 Gasoline (Petrol) 1 L 12 L 14 L 24 L (0.26 US gal, (3.2 US gal, (3.7 US gal, (6.3 US gal, 0.22 Imp gal) 2.6 Imp gal) 3.1 Imp gal) 5.3 Imp gal) Engine oil 0.02 L 0.24 L 0.28 L 0.48 L (0.02 US qt, (0.25 US qt, (0.30 US qt, (0.51 US qt, 0.02 Imp qt) 0.21 Imp qt) 0.25 Imp qt) 0.42 Imp qt) 3-13

55 3-14 cc Make sure to mix gasoline (petrol) and oil completely, otherise your outboard motor may be damaged. EMU00229 Run the engine under load (in gear ith a propeller installed) as follos. 1) First 10 minutes: Run the engine at the loest possible-speed. A fast idle in neutral is best. 2) Next 50 minutes: Do not exceed half throttle (approximately 3,000 r/min). Vary engine speed occasionally. If you have an easy-planing boat, accelerate at full throttle onto plane, then immediately reduce the throttle to 3,000 r/min or less. 3) Second hour: Accelerate at full throttle onto plane, then reduce engine speed to threequarter throttle (approximately 4,000 r/min). Vary engine speed occasionally. Run at full throttle for one minute, then allo about 10 minutes of operation at three-quarter throttle or less to let the engine cool. 4) Third through tenth hours: Avoid operating at full throttle for more than 5 minutes at a time. Let the engine cool beteen full-throttle runs. Vary engine speed occasionally. Pre-mix model 5) After the first 10 hours: Operate the engine normally. Use the standard premix ratio of gasoline (petrol) : Oil. (Refer to Gasoline/Petrol and Oil Mixing.) E

56 Precision Blend System model 5) After the first 10 hours: Operate the engine normally. Use straight gasoline (petrol) in the fuel tank; YAMAHA PRECISION BLEND SYSTEM provides proper lubrication for normal operation. E EMU01147 STARTING ENGINE 8 Before starting the engine, make sure that the boat is tightly moored and that you can steer clear of any obstructions. Be sure there are no simmers in the ater near you. 8 When the air vent scre is loosened, gasoline (petrol) vapor ill be released. Gasoline (petrol) is highly flammable, and its vapors are flammable and explosive. Refrain from smoking, and keep aay from open flames and sparks hile loosening the air vent scre. 8 This product emits exhaust gases hich contain carbon monoxide, a colorless, odorless gas hich may cause brain damage or death hen inhaled. Symptoms include nausea, dizziness, and drosiness. Keep cockpit and cabin areas ell ventilated. Avoid blocking exhaust outlets. 3-15

57 1) If there is an air vent scre on the fuel tank cap, loosen it 2 or 3 turns. E * 25-3/30 2) If there is a fuel joint on the motor, firmly connect the fuel line to the joint. Then firmly connect the other end of the fuel line to the joint on the fuel tank. NOTE: During engine operation place the tank horizontally, or fuel cannot be dran into the engine. 3) Squeeze the primer bulb ith the outlet end up until you feel it become firm N EMU00854 PROCEDURE FOR TILLER CONTROL MODEL 4) Place the gear-shift lever in the neutral position. NOTE: The start-in-gear protection device prevents the engine from starting except hen in Neutral. 3-16

58 5) Place the throttle control grip in the START position. E / * 6) Attach the engine stop sitch lanyard to a secure place on your clothing, or your arm or leg. Then, install the lock plate on the other end of the lanyard in the engine stop sitch. 8 Attach the engine stop sitch lanyard to a secure place on your clothing, your arm or leg hile operating. 8 Do not attach the lanyard to clothing that could tear loose. Do not route the lanyard here it could become entangled, preventing it from functioning. 8 Avoid accidentally pulling the lanyard during normal operation. Loss of engine poer means the loss of most steering control. Also, ithout engine poer, the boat could slo rapidly. This could cause people and objects in the boat to be thron forard / * * EMU00240 Manual Start Model 7) Pull out the choke knob completely. After the engine starts, return the knob to the original position. NOTE: 8 It is not necessary to use the choke hen restarting a arm engine. 8 If the choke knob is left pulled out after the engine starts, the engine ill stall. 3-17

59 ) Pull the starter handle sloly until you feel resistance. Then, give a strong pull straight out to crank and start the engine. Repeat it, if necessary. 9) After the engine starts, return the starter handle sloly to the original position before releasing it. 10) Return the throttle to the fully closed position EH/30ER * EMU00242 Electric Start Model 7) Pull out the choke knob completely. After the engine starts, return the choke knob to the original position. NOTE: 8 It is not necessary to use the choke hen restarting a arm engine. 8 If the choke knob is left pulled out, the engine ill stall. 30EH/30ER 8) Push the starter-button to start the starting motor. 9) Immediately the engine starts, release the starter-button to return it to the original position

60 ) Return the throttle control grip sloly to the fully closed position so that the engine does not stall. cc 8 Never push the starter-sitch hile the engine is running. 8 Do not keep the starter motor turning for more than 5 seconds. If the startermotor is turned continuously for more than 5 seconds, the battery ill be quickly discharged, thus making it impossible to start the engine. If the engine ill not start after 5 seconds of cranking, release your hand from the starter-sitch, and crank the engine again after an interval of 10 seconds. N EMU00247 PROCEDURE FOR REMOTE CONTROL MODEL 4) Place the remote control lever in the Neutral position. NOTE: The start-in-gear protection device prevents the engine from starting except hen in Neutral. 5) Attach the engine stop sitch lanyard to a secure place on your clothing, or your arm or leg. Then, install the lock plate on the other end of the lanyard in the engine stop sitch

61 8 Attach the engine stop sitch lanyard to a secure place on your clothing, your arm or leg hile operating. 8 Do not attach the lanyard to clothing that could tear loose. Do not route the lanyard here it could become entangled, preventing from functioning. 8 Avoid accidentally pulling the lanyard during normal operation. Loss of engine poer means the loss of most steering control. Also, ithout engine poer, the boat could slo rapidly. This could cause people and objects in the boat to be thron forard. E 6) Turn the main sitch to ON. N * MU00945 Electric Start Model 7) Open the throttle slightly lifting the neutral throttle lever upards partially. You may need to change the throttle opening slightly depending on engine temperature. After the engine starts, return the throttle to the original position. NOTE: 8 As a starting point, lift the lever just until you feel resistance, then lift slightly more. 8 The operation of the neutral throttle lever is possible only hen the remote control lever is in N. 3-20

62 OFF ON START ) Press in and hold the main sitch to operate the remote choke system. (The remote choke sitch returns to its home position hen you release your hand. Therefore, keep the sitch pressed in.) NOTE: 8 It is not necessary to use the choke hen the engine is arm. 8 Set the choke knob to the home position, or the remote choke system ill not operate. OFF ON START ) Turn the main sitch to START, and hold it for a maximum of 5 seconds. 10) Immediately after the engine starts, release the main sitch to return it to ON. cc 8 Do not turn the main sitch to START hen the engine is running. 8 Do not keep the starter-motor turning for more than 5 seconds. The battery ill rapidly become exhausted and it ill be impossible for it to start the engine. If the engine does not start ithin 5 seconds, return the main sitch to ON, ait 10 seconds, and then crank the engine again. 3-21

63 EMG00010 WARMING UP ENGINE 1) Before beginning operation, allo the engine to arm up at idling speed for 3 minutes. (Failure to do this ill shorten engine life.) 2) Check for a steady flo of ater from the cooling-ater pilot hole. E cc A continuous flo of ater from the pilot hole shos that the ater pump is pumping ater through the cooling passages. If ater is not floing out of the pilot hole at all times hile the engine is running, do not continue to run the engine. Overheating and serious damage could occur. Stop the engine and check to see if the ater inlet on the loer casing is blocked. If the problem cannot be found and corrected, consult your Yamaha dealer. 3-22

64 MG20710 SHIFTING Before shifting, make sure there are no simmers or obstacles in the ater near you. cc To change the shifting position from forard to reverse or vice-versa, close the throttle first so that the engine idles (or runs at lo speeds). N F FORWARD Tiller control model 1) Place the throttle control grip in the fully closed position. 2) Turn the gear-shift lever quickly and firmly from Neutral to Forard F N Remote control model Pull up the neutral interlock trigger and move the remote control lever quickly and firmly from Neutral to Forard

65 EMU01326 REVERSE When operating in Reverse, go sloly. Do not open the throttle more than half. Otherise, the boat may become unstable, hich could result in loss of control and an accident /30 1) Place the throttle control grip in the fully closed position (for Tiller control model). 2) Check that the tilt-lock lever (for Manual tilt/hydro-tilt model) is in the locked position * * R N Tiller control model 3) Turn the gear-shift lever quickly and firmly from Neutral to Reverse N R Remote control model 3) Pull up the neutral interlock trigger if equipped and move the remote control lever quickly and firmly from Neutral to Reverse

66 25 EEMG38010 STOPPING ENGINE Let it cool off for a fe minutes at idle or lo speed first. Stopping the engine immediately after operating at high speed is not recommended * 25-3/30 OFF ON START EMU ) Push and hold the engine stop button or turn the main sitch to OFF. 2) If the fuel joints are provided, disconnect the fuel line from the motor after stopping the engine. 3) Tighten the air vent scre on the fuel tank cap after stopping the engine, if it is equipped. 4) Remove the key if the boat ill be left unattended. NOTE: The engine can also be stopped by pulling the lanyard and removing the lock plate from the engine stop lanyard sitch (then turning the main sitch to OFF )

67 MU01412 TRIMMING OUTBOARD MOTOR E The trim angle of the outboard motor helps determine the position of the bo of the boat in the ater. The correct trim angle ill help improve performance and fuel economy hile reducing strain on the engine. The correct trim angle depends upon the combination of boat, engine, and propeller. Correct trim is also affected by variables such as the load in the boat, sea conditions, and running speed. q Excessive trim for the operating conditions (either trim up or trim don) can cause boat instability and can make steering the boat more difficult. This increases the possibility of an accident. If the boat begins to feel unstable or is hard to steer, slo don and/or readjust the trim angle. NOTE: Refer to the section ADJUSTING TRIM ANGLE for instructions on usage. 1 Trim operating angle 3-26

68 25 q 25-3/30 q * * ADJUSTING TRIM ANGLE E EMU00951 Manual tilt model There are 4 or 5 holes provided in the clamp bracket to adjust the outboard motor trim angle. 1) Stop the engine. 2) Remove the trim angle adjusting rod 1 from the clamp bracket hile tilting the motor up slightly. 3) Reposition the rod in the desired hole. To raise the bo ( trim-out ), move the rod aay from the transom. To loer the bo ( trim-in ), move the rod toard the transom. Make test runs ith the trim set to different angles to find the position that orks best for your boat and operating conditions. 8 Stop the engine before adjusting the trim angle. 8 Use care to avoid being pinched hen removing or installing the rod. 8 Use caution hen trying a trim position for the first time. Increase speed gradually and atch for any signs of instability or control problems. Improper trim angle can cause loss of control. NOTE: The outboard motor trim angle can be changed approximately 4 degrees by shifting the trim adjusting-rod one hole. 3-27

69 EMU00282 Bo Up When the boat is on plane, a bo-up attitude result in less drag, greater stability and efficiency. This is generally hen the keel line of the boat is up about 3 to 5 degrees. When trimmed out, the boat may have more tendency to steer to one side or the other. Compensate for this as you steer. The trim tab can also be adjusted to help offset this effect. Too much trim-out puts the bo of the boat too high in the ater. Performance and economy are decreased because the hull of the boat is pushing the ater and there is more air drag. Excessive trim-up can cause the propeller to ventilate, hich reduces performance further. When trimmed-out too much, a boat may porpoise (hop in the ater), hich could thro the operator and passengers overboard. EMU00283 Bo Don When the bo of the boat is don, it is easier to accelerate from a standing start onto plane. Too much trim-in causes the boat to plo through the ater, decreasing fuel economy and making in hard to increase speed. Operating ith excessive trim-in at higher speeds also makes the boat unstable. Resistance at the bo is greatly increased, heightening the danger of bo steering and making operation difficult and dangerous. 1 Bo up 2 Bo don 3 Optimum angle 3-28

70 MG70011 CRUISING IN SHALLOW WATER E Manual tilt model The outboard motor can be tilted up partially to allo operation in shallo ater. 8 Place the gear shift in the Neutral position before using the shallo ater cruising system. 8 Run the boat at the loest possible speed hen using the shallo ater cruising system. The tilt-lock mechanism does not ork hile the shallo ater cruising system is being used. Hitting an underater obstacle could cause the engine to lift out of the ater, resulting in loss of control. 8 Use extra care hen operating in reverse. Too much reverse thrust can cause the engine to lift out of the ater, increasing the chance of accident and personal injury. 8 Return the engine to its normal position as soon as the boat is back in deeper ater. 25 cc Place the gear-shift in the Neutral position before using the shallo ater cruising system ** EMG71310 PROCEDURE 25 1) Place the gear shift lever in the neutral position. 2) Push the tilt lock lever don to release. 3-29

71 E 3) Pull up the shallo ater lever. 4) Slightly tilt up the engine. The tiltsupport bar ill lock automatically, supporting the engine in a partially raised position. NOTE: If the engine is tilted up completely, the tilt-lock lever automatically locks. The shallo ater lever is no longer effective. 25 5) When loering the engine, set the tiltlock lever and shallo ater lever to the lock position. Slightly tilt up the engine until the tilt-support bar automatically returns to the free position. Then, sloly loer the engine to the normal position * 25-3/ * EMG80511* PROCEDURE 25-3/30 1) Push the shallo ater lever don to the release position. 2) For setting the outboard motor at the partially tilted position, slightly tilt up the engine until the plate turns completely 25-3/30 3) To return the engine to the normal position, put the engine in Neutral, then slightly tilt up the engine. Set the tilt-lock lever and shallo ater lever to the lock position and sloly tilt the engine don

72 EMH10110 TILTING UP/DOWN If the engine ill be stopped for some time, or if the boat is moored in shallos, the engine should be tilted up to protect the propeller and casing from damage by collision ith obstructions, and also to reduce salt corrosion. cc 8 Before tilting the motor, follo the procedures under STOPPING ENGINE. Never tilt the motor hile the engine is running. Severe damage from overheating can result. 8 Do not tilt up the engine by pushing the steering handle as this could break the handle. 8 Keep the poer unit higher than the propeller at all times. Otherise, ater can run into the cylinder, causing damage. Be sure all people are clear of the outboard motor hen adjusting the tilt angle, also be careful not to pinch any body parts beteen the drive unit and engine bracket. Leaking fuel is a fire hazard. Disconnect the fuel line if the engine ill be tilted for more than a fe minutes. Otherise, fuel may leak. (If the fuel connector is provided on the motor.) 3-31

73 N EMG63910 PROCEDURE FOR TILTING UP 25 1) Place the gear shift lever in Neutral. 2) Remove the fuel line connection from the motor ) Push the tilt lock lever to release ** 4) Pull up the shallo ater lever * 5) Hold the rear of the top coling ith one hand and fully tilt the engine up. 6) The tilt support bar turns to the locked position automatically. 3-32

74 EMG63010* PROCEDURE FOR TILTING UP 25-3/30 1) Remove the fuel-line connection from the motor. (If the fuel connector is provided on the motor.) 2) Place the tilt-lock lever in Release ) Hold the rear of the top coling ith one hand, tilt the engine up, and turn the tilt-support lever to the locked position and support the engine EMG73410 PROCEDURE FOR TILTING DOWN 25 1) Return the shallo ater lever. 2) Slightly tilt up the engine until the tilt support bar is released automatically. 3) Tilt don the engine * EMG73210 PROCEDURE FOR TILTING DOWN 25-3/30 1) Return the tilt support lever tilting up the engine slightly. 2) Tilt don the engine

75 EMH60010 CRUISING IN OTHER CONDITIONS CRUISING IN SALT WATER After operating in salt ater, ash out the cooling-ater passages ith fresh ater to prevent them from becoming cloggedup ith salt deposits. NOTE: Refer to cooling system flushing instructions in TRANSPORTING AND STORING OUTBOARD MOTOR. CRUISING IN TURBID WATER It is strongly recommended that the optional chromium-plated ater-pump kit be installed if the outboard is to be used in turbid (muddy) ater conditions. 3-34

76 -MEMO- E

77 EMK00010 Chapter 4 MAINTENANCE 1 SPECIFICATION DATA TRANSPORTING AND STORING OUTBOARD MOTOR Trailering outboard motor Storing outboard motor PERIODIC MAINTENANCE Replacement parts Maintenance chart Cleaning and adjusting spark plug Checking fuel system Inspecting fuel filter Adjusting idling speed Checking ater drain under engine oil tank Replacing fuse Checking iring and connectors Exhaust leakage Water leakage Greasing Checking propeller Changing gear oil Cleaning fuel tank Inspecting and replacing anode(s) Checking battery Checking bolts and nuts Motor exterior Coating the boat bottom

78 EMK10011* SPECIFICATION DATA Item Model Unit 25MHA DIMENSIONS 8Overall Length mm (in.) 8Overall Width mm (in.) 8Overall Height S/L mm (in.) 8Transom height S/L mm (in.) 8Weight S/L kg (lb.) 936 (369) 358 (14.1) 1,068 (42.0)/1,195 (47.0) 419 (16.5)/546 (21.5) 49.0 (108.0)/50.5 (111.3) PERFORMANCE 8Full throttle operating range 8Maximum output 8Idling speed ENGINE 8Type Number of cylinder Displacement Bore stroke 8Ignition system 8Spark plug Spark plug gap 8Control system 8Starting system 8Battery capacity Minimum cold crank performance Minimum reserve capacity 8Alternator output 8Starting carburetion system DRIVE UNIT 8Gear positions Gear ratio 8Trim/tilt system 8Propeller mark FUEL AND OIL 8Fuel Fuel tank capacity 8Recommended engine oil Oil tank capacity 8Fuel/oil ratio 8Recommended gearcase oil Gear oil capacity TIGHTENING TORQUE 8Spark plug 8Propeller nut r/min kw (HP) r/min cm 3 (cu.in.) mm (in.) NGK mm (in.) V-AH Amps at 17.8 C (0 F) minutes at 26.7 C (80 F) V-A (W) L (US gal, Imp gal) L (US qt, Imp qt) cm 3 (US oz, Imp oz) N m (kgf m, lb ft) N m (kgf m, lb ft) 4-1 5,000~6, (25) at 5,500 r/min 700~800 2-stroke, L (24.1) ( ) C.D.I system B7HS ~1.0 (0.035~0.039) Tiller control Manual start 12V-(80W) Choke start system Forard-Neutral-Reverse 2.08 (27/13) Manual F Regular-unleaded gasoline (P.O.N.: minimum 86) 25 (6.6, 5.5) YAMALUBE 2 STROKE OUTBOARD OIL or an equivalent TC-W3 certified outboard oil. 100 : 1 Hypoid gear oil (SAE 90) 370 (12.5, 13.0) 25 (2.5, 18) 35 (3.5, 25)

79 25MHA3 30MHA 30EHA 993 (39.1) 360 (14.2) 1,158 (45.6)/ 424 (16.7)/ 59.0 (130.1)/ 993 (39.1) 360 (14.2) 1,158 (45.6)/1,279 (50.4) 424 (16.7)/545 (21.5) 60.0 (132.3)/62.0 (136.7) 993 (39.1) 360 (14.2) /1,279 (50.4) /545 (21.5) /64.5 (142.2) 4,500~5, (25) at 5,000 r/min 700~800 4,500~5, (30) at 5,000 r/min 700~800 4,500~5, (30) at 5,000 r/min 700~800 2-stroke, L (30.3) ( ) C.D.I system B7HS ~1.0 (0.035~0.039) Tiller control Manual start 12V-(80W) Choke start system 2-stroke, L (30.3) ( ) C.D.I system B7HS ~1.0 (0.035~0.039) Tiller control Manual start 12V-(80W) Choke start system 2-stroke, L (30.3) ( ) C.D.I system B7HS ~1.0 (0.035~0.039) Tiller control Electric start 12-40~ V-6A Choke start system Forard-Neutral-Reverse 1.85 (24/13) Manual F Forard-Neutral-Reverse 1.85 (24/13) Manual F Forard-Neutral-Reverse 1.85 (24/13) Manual F Regular-unleaded gasoline (P.O.N.: minimum 86) 25 (6.6, 5.5) YAMALUBE 2 STROKE OUTBOARD OIL or an equivalent TC-W3 certified outboard oil. 100 : 1 Hypoid gear oil (SAE 90) 200 (6.8, 7.0) Regular-unleaded gasoline (P.O.N.: minimum 86) 25 (6.6, 5.5) YAMALUBE 2 STROKE OUTBOARD OIL or an equivalent TC-W3 certified outboard oil. Engine: 0.9 (1.0, 0.8) Hypoid gear oil (SAE 90) 370 (12.5, 13.0) Regular-unleaded gasoline (P.O.N.: minimum 86) 25 (6.6, 5.5) YAMALUBE 2 STROKE OUTBOARD OIL or an equivalent TC-W3 certified outboard oil. Engine: 0.9 (1.0, 0.8) Hypoid gear oil (SAE 90) 370 (12.5, 13.0) 25 (2.5, 18) 35 (3.5, 25) 25 (2.5, 18) 35 (3.5, 25) (2.5, 18) 35 (3.5, 25)

80 EMK10011* SPECIFICATION DATA Item Model Unit 30ERA DIMENSIONS 8Overall Length mm (in.) 8Overall Width mm (in.) 8Overall Height S/L mm (in.) 8Transom height S/L mm (in.) 8Weight S/L kg (lb.) 662 (26.1) 307 (12.1) /1,261 (49.6) /545 (21.5) /62.0 (136.7) PERFORMANCE 8Full throttle operating range 8Maximum output 8Idling speed ENGINE 8Type Number of cylinder Displacement Bore stroke 8Ignition system 8Spark plug Spark plug gap 8Control system 8Starting system 8Battery capacity Minimum cold crank performance Minimum reserve capacity 8Alternator output 8Starting carburetion system DRIVE UNIT 8Gear positions Gear ratio 8Trim/tilt system 8Propeller mark FUEL AND OIL 8Fuel Fuel tank capacity 8Recommended engine oil Oil tank capacity 8Fuel/oil ratio 8Recommended gearcase oil Gear oil capacity TIGHTENING TORQUE 8Spark plug 8Propeller nut r/min kw (HP) r/min cm 3 (cu.in.) mm (in.) NGK mm (in.) V-AH Amps at 17.8 C (0 F) minutes at 26.7 C (80 F) V-A (W) L (US gal, Imp gal) L (US qt, Imp qt) cm 3 (US oz, Imp oz) N m (kgf m, lb ft) N m (kgf m, lb ft) 4-3 4,500~5, (30) at 5,000 r/min 700~800 2-stroke, L (30.3) ( ) C.D.I system B7HS ~1.0 (0.035~0.039) Remote control Electric start 12-40~ V-6A Choke start system Forard-Neutral-Reverse 1.85 (24/13) Manual F Regular-unleaded gasoline (P.O.N.: minimum 86) 25 (6.6, 5.5) YAMALUBE 2 STROKE OUTBOARD OIL or an equivalent TC-W3 certified outboard oil. Engine: 0.9 (1.0, 0.8) Hypoid gear oil (SAE 90) 370 (12.5, 13.0) 25 (2.5, 18) 35 (3.5, 25)

81 EMU01369* TRANSPORTING AND STORING OUTBOARD MOTOR Leaking fuel is a fire hazard. When transporting and storing the outboard motor, close the air vent scre and fuel cock to prevent fuel from leaking. TRAILERING OUTBOARD MOTOR The motor should be trailered and stored in the normal running position. If there is insufficient road clearance in this position, then trailer the motor in the tilt position using a motor support device such as a transom saver bar. cc Do not use the tilt support lever/knob hen trailering the boat. The outboard motor could shake loose from the tilt support and fall. If the motor can not be trailered in the don position, use an additional support device to secure it in the up position Never get under the loer unit hile it is tilted, even if a motor support bar is used. Severe injury could occur if the outboard accidentally falls. 8 USE CARE hen transporting fuel tank, hether in a boat or car. DO NOT fill fuel container to maximum capacity. Gasoline ill expand considerably as it arms up and can build up pressure in the fuel container. This can cause fuel leakage and a potential fire hazard.

82 When transporting or storing the outboard motor hile removed from a boat, fold the tiller handle and lean the motor on the tiller handle to keep in a horizontal position. E NOTE: Place a toel or the like under the outboard motor to protect it from damage. cc Keep the poer unit higher than the propeller at all times. Otherise, cooling ater can run into the cylinder, hich could result in damage. EMK16010 STORING OUTBOARD MOTOR When storing your Yamaha outboard for prolonged periods of time, (2 months or longer), several important procedures must be performed to prevent expensive damage. This is especially important for your Precision Blend equipped outboard due to the lean oil ratios used at idle prior to shutting the engine off for the season. It is advisable to have your outboard serviced by an authorized Yamaha dealer prior to storage. Hoever, the folloing procedures can be performed by you, the oner, ith a minimum of tools. 4-5

83 EMK21010 Filling Fuel Tank Fill the fuel tank ith fresh fuel and add one ounce of Yamaha Fuel Conditioner and Stabilizer (Part No. LUB-FUELC-12-00) to each gallon of fuel. NOTE: The use of Yamaha Fuel Conditioner and Stabilizer eliminates the need to drain the fuel system. Consult your Yamaha dealer or other qualified mechanic if the fuel system is to be drained instead. q EMK22211 Flushing Cooling System and Fogging Engine Cooling system flushing is essential to prevent the cooling system from clogging up ith salt, sand, or dirt. In addition, fogging of the engine is mandatory to prevent expensive engine damage due to rust. Perform the flushing and fogging at the same time. 1) Remove the coling. 2) Install the outboard motor on the ater tank, and fill the tank ith fresh ater to above the level of the anticavitation plate. 1 Water surface 2 Loest ater level cc If the fresh ater level is belo the level of the anti-cavitation plate, or if the ater supply is insufficient, engine seizure may occur. 4-6

84 E 8 Do not touch or remove electrical parts hen starting or during operation. 8 Keep hands, hair and clothes aay from flyheel and other rotating parts hile engine is running. 3) Run the engine at a fast idle for 10~15 minutes. 4) Just prior to turning off the engine, quickly spray Yamaha Stor-Rite Engine Fogging Oil (Part No. LUB- STRRT-12-00) alternately into carburetor. When properly done, the engine ill smoke excessively and almost stall. 5) Turn off the engine and ater supply. EMK26111 Lubrication 1) Remove the spark plugs, and spray a 10 second spray of Yamaha Stor- Rite Engine Fogging Oil into each cylinder. Grease the spark plug threads and reinstall the spark plugs and torque to proper specification. (Refer to CLEANING AND ADJUST- ING SPARK PLUG.) 2) Turn the engine over ith the stop lanyard disconnected to ork the fogging oil into the piston rings. 3) Fill the oil tanks. This prevents the formation of condensation. For models ith a remote tank, it may be necessary to manually override the control unit to completely fill the engine main tank. (Refer to TEMPORARY ACTION IN EMERGENCY ). 4-7

85 4) Change the loer unit oil. (Refer to CHANGING GEAR OIL ). Inspect the oil for the presence of ater hich indicates a leaky seal. Seal replacement should be performed by an authorized Yamaha dealership prior to use. 5) Grease all grease fittings. (Refer to GREASING ) E EMK27011 Cleaning and Anti-corrosion Measure 1) Wash don the exterior of the outboard ith fresh ater and dry off completely. 2) Spray the engine s exterior ith Yamaha Silicone Protectant (Part No. LUB-SILCNE-13-00). 3) Wax the coling ith a non-abrasive ax such as Yamaha Silicone Wax (Part No. ACC ). 4-8

86 MU00353 Battery Care E Battery electrolyte is poisonous and dangerous, causing severe burns, etc. It contains sulfuric acid. Avoid contact ith skin, eyes, or clothing. Antidote: EXTERNAL; Flush ith ater. INTERNAL; Drink large quantities of ater or milk. Follo ith milk of magnesia, beaten egg, or vegetable oil. Call physician immediately. EYES; Flush ith ater for 15 minutes and get prompt medical attention. Batteries produce explosive gases: Keep sparks, flame, cigarettes, etc. aay. Ventilate hen charging or using in a closed space. Alays ear eye protection hen orking near batteries. KEEP OUT OF REACH OF CHILDREN. Batteries vary among manufacturers. Therefore the folloing procedures may not alays apply. Consult your battery manufacturer s instructions. 1) Disconnect and remove the battery from the boat. Alays disconnect the black negative lead first to prevent the risk of shorting. 2) Clean the battery casing and terminals. Fill each cell to the upper level ith distilled ater. 3) Store the battery on a level surface in a cool, dry, ell-ventilated place out of direct sunlight. 4) Once a month, check the specific gravity of the electrolyte and recharge as required to prolong battery life. 4-9

87 MK32110 PERIODIC MAINTENANCE Be sure to turn off the engine hen you perform maintenance unless otherise specified. If the oner is not familiar ith machine servicing, this ork should be done by a Yamaha dealer or other qualified mechanic. A service manual is available for purchase through a Yamaha dealer for oners ho have the mechanical skills, tools, and other equipment necessary to perform maintenance not covered by this oner s manual. E EMK33011 REPLACEMENT PARTS If replacement parts are necessary, use only genuine Yamaha parts or equivalents of the same type and of equivalent strength and materials. Any part of inferior quality may malfunction, and the resulting loss of control could endanger the operator and passengers. Yamaha genuine parts and accessories are available from a Yamaha dealer. 4-10

88 MK30012* MAINTENANCE CHART Frequency of maintenance operations may be adjusted according to the operating conditions, but the folloing table gives general guidelines. The mark (7) indicates the check-ups hich you may carry out yourself. The mark (2) indicates ork to be carried out by your Yamaha dealer. Interval Initial Every Refer 50 hours 100 hours 200 hours Item 10 hours Page (3 months) (6 months) (1 year) Cleaning/Adjustment/ Spark plug(s) Replacement 4-12 Grease points Greasing 4-19, 4-20, 4-21 Fuel system Inspection 4-14 Fuel filter Cleaning/Replacement 4-15 Fuel tank *1 Cleaning 4-25 Idling speed Inspection/Adjustment 4-16 Oil tank ater drain Cleaning 4-17 Oil pump Inspection/Adjustment 1 Propeller Inspection 4-22 Gear oil Change 4-24 Anode(s) Inspection/Replacement Wiring/Connector(s) Inspection/Reconnect 4-18 Exhaust leakage Inspection 4-18 Water leakage Inspection 4-18 Bolts/Nuts Retightening 4-30 Coling clamp(s) Inspection/Adjustment Motor exterior Inspection 4-30 Cooling ater passages *2 Flushing (every Battery Inspection/Charge month) 4-27 *1.If a portable fuel tank is equipped. *2.When operating in salt ater, turbid or muddy ater, the engine should be flushed ith clean ater after each use. E 4-11

89 EMU01202 CLEANING AND ADJUSTING SPARK PLUG When removing or installing a spark plug, be careful not to damage the insulator. A damaged insulator could allo external sparks, hich could lead to explosion or fire. The spark plug is an important engine component and is easy to inspect. The condition of the spark plug can indicate something about the condition of the engine. For example, if the center electrode porcelain is very hite, this could indicate an intake air leak or carburetion problem in that cylinder. Do not attempt to diagnose any problems yourself. Instead, take the outboard motor to a Yamaha dealer. You should periodically remove and inspect the spark plug because heat and deposits ill cause the spark plug to sloly break don and erode. If electrode erosion becomes excessive, or if carbon and other deposits are excessive, you should replace the spark plug ith another of the correct type. Standard spark plug: Refer to SPECIFICATIONS, page 4-1. Before fitting the spark plug, measure the electrode gap ith a ire thickness gauge; adjust the gap to specification if necessary. Spark plug gap: Refer to SPECIFICATIONS, page

90 When fitting the plug, alays clean the gasket surface and use a ne gasket. Wipe off any dirt from the threads and scre in the spark plug to the correct torque. Spark plug torque: Refer to SPECIFICATIONS, page 4-1. NOTE: If a torque-rench is not available hen you are fitting a spark plug, a good estimate of the correct torque is 1/4 to 1/2 a turn past finger-tight. Have the spark plug adjusted to the correct torque as soon as possible ith a torque-rench. E Initial of spark plug I.D. mark B C/BK D Plug-rench size 21 mm (13/16 in.) 16 mm (5/8 in.) 18.3 mm (23/32 in.) 1 Spark plug gap 2 Spark plug I.D. mark (NGK) q

91 /30 EMK38010 CHECKING FUEL SYSTEM Gasoline (petrol) and its vapors are highly flammable and explosive. Keep aay from sparks, cigarettes, flames or other sources of ignition. Check the fuel line for leaks, cracks, or malfunctions. If any problem is found, it should be repaired immediately by Yamaha dealer or other qualified mechanic. Checking points 8 Fuel system parts leakage. 8 Fuel hose joint leakage. 8 Fuel hose cracks or other damage. 8 Fuel connector leakage. Leaking fuel can result in fire or explosion. 8 Check for fuel leakage regularly. 8 If any fuel leakage is found, the fuel system must be repaired by a qualified mechanic. Improper repairs can make the outboard unsafe to operate. 4-14

92 MU00370 INSPECTING FUEL FILTER E Gasoline (petrol) is highly flammable, and its vapors are flammable and explosive. 8 If you have any question about properly doing this procedure, consult your Yamaha dealer. 8 Do not perform this procedure on a hot or running engine. Allo the engine to cool. 8 There ill be fuel in the fuel filter. Keep aay from sparks, cigarettes, flames or other sources of ignition. 8 This procedure ill allo some fuel to spill. Catch fuel in a rag. Wipe up any spilled fuel immediately. 8 The fuel filter must be reassembled carefully ith O-ring, filter cup, and hoses in place. Improper assembly or replacement can result in a fuel leak, hich could result in a fire or explosion hazard. EMU ) Remove the nut holding the fuel filter assembly if equipped. 2) Unscre the filter cup, catching any spilled fuel in a rag. 3) Remove the filter element, and ash it in solvent. Allo it to dry. Inspect the filter element and O-ring to make sure they are in good condition. Replace them if necessary. 4) Reinstall the filter element in the cup. Make sure the O-ring in position in the cup. Firmly scre the cup onto the filter housing. 4-15

93 q e r * 5) Attach the filter assembly to the bracket ith that the fuel hoses are attached to the filter assembly. 6) Run the engine and check the filter and lines for leaks. 1 Filter element 2 O-ring 3 Filter cap 4 Filter housing E EMU00376 ADJUSTING IDLING SPEED 8 Do not touch or remove electrical parts hen starting or during operation. 8 Keep hands, hair and clothes aay from flyheel and other rotating parts hile engine is running. cc This procedure must be performed hile the outboard motor is in the ater. A flushing attachment or test tank can be used. A diagnostic tachometer should be used for this procedure. 1) Start the engine and allo it to arm up fully in Neutral until it is running smoothly. If the outboard is mounted on a boat, be sure the boat is tightly moored. 4-16

94 /30 q q ) Adjust the throttle stop-scre to set the idling speed to specification (see SPECIFICATIONS ) by turning the stop-scre clockise to increase the idling speed, and turning it counterclockise to decrease the idling speed. NOTE: Correct idling-speed adjustment is only possible if the engine is fully armed-up. If not armed up fully, the speed setting ill tend to be too high. If you have difficulty obtaining the specified idle, consult a Yamaha dealer or other qualified mechanic. E 1 Throttle stop-scre q EMK58010 CHECKING WATER DRAIN UNDER ENGINE OIL TANK A translucent ater drain hose is connected from the bottom of the oil tank to the filler neck. If ater or foreign matter collects in this hose, immediately remove the hose at the filler neck and drain the contaminants. 1 Hose 2 Filler neck side 4-17

95 EMU01329 REPLACING FUSE If the fuse has blon on an Electric start model, open the fuse holder and replace the fuse ith a ne one of proper amperage. 25 q Be sure to use the specified fuse. An incorrect fuse or a piece of ire may allo excessive current flo. This could cause electrical system damage and a fire hazard. 30 q NOTE: If the ne fuse blos again immediately, consult a Yamaha dealer Fuse holder 2 Fuse (10A) EMK78010 CHECKING WIRING AND CONNECTORS 1) Check that each grounding ire is properly secured. 2) Check that each connector is engaged securely. EXHAUST LEAKAGE Start the engine and check that no exhaust leaks from the joints beteen the exhaust cover, cylinder head and crank case. WATER LEAKAGE Start the engine and check that no ater leaks from the joints beteen the exhaust cover, cylinder head and crank case. 4-18

96 MU00366 GREASING Yamaha marine grease (Water resistant grease) b 4-19

97 EMU00366 GREASING Yamaha marine grease (Water resistant grease) 25-3/ a 4-20

98 EMU00366 GREASING Yamaha marine grease (Water resistant grease)

99 EMU00388 CHECKING PROPELLER You could be seriously injured if the engine accidentally starts hile you are near the propeller. 8 Before inspecting, removing or installing the propeller, remove the spark plug caps from the spark plugs. Also, put the shift control in Neutral, put the main sitch in the OFF position and remove the key, and remove the lanyard from the engine stop sitch. Turn off the battery cut-off sitch if your boat has one. 8 Do not use your hand to hold the propeller hen loosening or tightening the propeller nut. Put a ood block beteen the cavitation plate and the propeller to prevent the propeller from turning * EMU00390 Propeller Checking Point 8 Check each of the propeller blades for ear, erosion from cavitation or ventilation, or other damage. 8 Check the splines for ear and damage. 8 Check for fish line inding around the propeller shaft. 8 Check the propeller shaft oil seal for damage. EMU00393 Removing the Propeller 1) Using the pliers provided, straighten the cotter-pin and pull it out. 2) Remove the propeller nut, asher and spacer. 3) Remove the propeller and thrust asher. 4-22

100 Thrust asher 2 Propeller 3 Spacer 4 Washer 5 Propeller nut 6 Cotter pin EMU00397 Installing the Propeller cc 8 Be sure to install the thrust asher before installing propeller, otherise, loer case and propeller boss may be damaged. 8 Be sure to use a ne cotter pin and bend the ends over securely. Otherise, the propeller could come off during operation and be lost. 1) Apply Yamaha Marine grease or Corrosion resistant grease to the propeller-shaft. 2) Install the thrust asher and propeller on the propeller-shaft. 3) Install the spacer and asher. Tighten the propeller nut to the specified torque. Tightening torque: Refer to SPECIFICATIONS page ) Align the propeller nut ith the propeller shaft hole. Insert a ne cotter pin in the hole and bend the cotter pin ends. NOTE: If the propeller nut does not align ith the propeller shaft hole after tightening to the specified torque, then tighten the nut further to align it ith the hole cc Be sure to use a ne cotter pin and bend the ends over securely. Otherise, the propeller could come off during operation and be lost. 4-23

101 MU00905 CHANGING GEAR OIL 8 Be sure the outboard is securely fastened to the transom or a stable stand. You could be severely injured if the outboard falls on you. 8 Never get under the loer unit hile it is tilted, even hen the tilt-support lever is locked. Severe injury could occur if the outboard accidentally falls. E 1) Put the outboard in a vertical position (not tilted). 2) Place a suitable container under the gear-case. 3) Remove the oil drain plug 1. NOTE: The oil drain plug is magnetic. Remove all metal particles from the plug before reinstalling it. q ) Remove the oil level plug 2 to allo the oil to drain completely. cc Inspect the used oil after it has been drained. If the oil is milky, ater is getting into the gear-case hich can cause gear damage. Consult a Yamaha dealer for repair of the loer unit seals. 4-24

102 NOTE: For disposal of used oil consult your Yamaha dealer. E ) With the outboard motor in an vertical position, using a flexible or pressurized filling device, inject the gear oil into the oil drain plug hole. Gear oil grade/capacity: Refer to SPECIFICATIONS on page ) When the oil begins to flo out of the oil level plug hole, insert and tighten the oil level plug. 7) Insert and tighten the oil drain plug. EML22011 CLEANING FUEL TANK Gasoline (petrol) is highly flammable, and its vapors are flammable and explosive. 8 If you have any question about properly doing this procedure, consult your Yamaha dealer. 8 Keep aay from sparks, cigarettes, flames or other sources of ignition hen cleaning the fuel tank. 8 Remove the fuel tank from the boat before cleaning it. Work only outdoors in an area ith good ventilation. 8 Wipe up any spilled fuel immediately. 8 Reassemble the fuel tank carefully. Improper assembly can result in a fuel leak, hich could result in a fire or explosion hazard. 8 Dispose of old gasoline (petrol)according to local regulations. 4-25

103 To clean the fuel tank 1) Empty the fuel tank into an approved gasoline (petrol) container. 2) Pour a small amount of suitable solvent in the tank. Reinstall the cap and shake the tank. Drain the solvent completely. To clean the fuel filter 1) Remove the scres holding the fuel hose joint assembly. Pull the assembly out of the tank. 2) Clean the filter (located on the end of the suction pipe) in a suitable cleaning solvent. Allo the filter to dry. 3) Replace the gasket ith a ne one. Reinstall the fuel hose joint assembly and tighten the scres firmly. E EMU00831 INSPECTING AND REPLACING ANODE(S) Yamaha outboard motor is protected from corrosion by a sacrificial anode(s). Check the anode(s) periodically. Remove the scales from surfaces of the anode(s). For the inspection and replacement of the anode(s), consult a Yamaha dealer. cc Do not paint the anode(s), for this ould render it ineffective 4-26

104 MU00404 CHECKING BATTERY (for Electric start model) Battery electrolytic fluid is dangerous; it contains sulfuric acid and therefore is poisonous and highly caustic. Alays follo these preventive measures: 8 Avoid bodily contact ith electrolytic fluid as it can cause severe burns or permanent eye injury. 8 Wear protective eye gear hen handling or orking near batteries. Antidote (EXTERNAL): 8 SKIN - Flush ith ater. 8 EYES - Flush ith ater for 15 minutes and get immediate medical attention. Antidote (INTERNAL): 8 Drink large quantities of ater or milk folloed by milk of magnesia, beaten egg, or vegetable oil. Get immediate medical attention. Batteries also generate explosive hydrogen gas; therefore, you should alays follo these preventive measures: 8 Charge batteries in a ell-ventilated area. 8 Keep batteries aay from fire, sparks, or open flames (e.g., elding equipment, lighted cigarettes, etc.). 8 DO NOT SMOKE hen charging or handling batteries. 8 KEEP BATTERIES AND ELECTROLYTIC FLUID OUT OF REACH OF CHILDREN. E 4-27

105 UPPER LEVEL LOWER LEVEL cc 8 A poorly maintained battery ill quickly deteriorate. 8 Ordinary tap-ater contains minerals harmful to a battery, and should not be used for topping-up ) Check the electrolyte level at least once a month. Fill to the manufacturer s recommended level hen necessary. Top up only ith distilled ater (or pure de-ionized ater suitable to use in batteries). 2) Keep the battery alays in a good state of charge. Installing a voltmeter ill help you monitor your battery. If you ill not use the boat for a month or more, remove the battery from the boat and store it in a cool, dark place. Completely recharge the battery before using it. 3) If the battery ill be stored for longer than a month, check the specific gravity of the fluid at least once a month and recharge the battery hen it is lo. 4-28

106 EMU01279 Connecting the Battery Mount the battery holder securely in a dry, ell-ventilated, vibration-free location in the boat. Install a fully charged battery in the holder. cc q 8 Make sure the main sitch (on applicable models) is OFF before orking on the battery. 8 Reversal of the battery leads ill damage the rectifier. 8 Connect the RED lead first hen installing the battery and disconnect the RED lead last hen removing it. Otherise, the electrical system can be damaged. 8 The electrical contacts of the battery and cables must be clean and properly connected, or the battery ill not start the engine. e UPPER LEVEL LOWER LEVEL Connect the RED lead to the POSITIVE (+) terminal first. Then connect the BLACK lead to the NEG- ATIVE (-) terminal Red lead 2 Black lead 3 Battery EMU01280 Disconnecting the Battery Disconnect the BLACK lead from the NEG- ATIVE (-) terminal first. Then disconnect the RED lead from the POSITIVE (+) terminal. 4-29

107 CHECKING BOLTS AND NUTS 1) Check that bolts securing the cylinder head and engine and the nut securing the flyheel are tightened ith their specified tightening torques. 2) Check the tightening torques of other bolts and nuts. E EMU00409 MOTOR EXTERIOR EMU00410 Cleaning the Outboard Motor After use, ash the exterior of the outboard ith fresh ater. Flush the cooling system ith fresh ater. NOTE: Refer to Flushing Cooling System instructions in TRANSPORTING AND STORING OUTBOARD MOTOR Checking Painted Surface of Motor Check the motor for scratches, nicks, or flaking paint. Areas ith damaged paint are more likely to corrode. If necessary, clean and paint the areas. Consult a Yamaha dealer for touch-up paint EML44010 COATING THE BOAT BOTTOM A clean hull improves boat performance. The boat bottom should be kept as clean of marine groths as possible. If necessary, the boat bottom can be coated ith an anti-fouling paint approved for your area to inhibit marine groth. Do not use anti-fouling paint hich includes copper or graphite. These paints can cause more rapid engine corrosion. 4-30

108 -MEMO- E

109 EMN00010 Chapter 5 TROUBLE RECOVERY 1 TROUBLESHOOTING TEMPORARY ACTION IN EMERGENCY Impact damage Starter ill not operate Treatment of submerged motor

110 EMU01204 TROUBLESHOOTING A problem in the fuel, compression, or ignition systems can cause poor starting, loss of poer, or other problems. The troubleshooting chart describes basic checks and possible remedies. (This chart covers all Yamaha outboard motors. Therefore, some items may not apply to your model.) If your outboard motor requires repair, bring it to a Yamaha dealer. Trouble Possible Cause Remedy A. Starter ill not operate. B. Engine ill not start (Starter operates). 1. Battery capacity eak or lo. 2. Battery connections loose or corroded. 3. Fuse for electric start circuit blon. 4. Starter components faulty. 5. Engine stop sitch lanyard not attached. 6. Shift lever in gear. 1. Fuel tank empty. 2. Fuel contaminated or stale. 3. Fuel filter clogged. 4. Starting procedure incorrect. 5. Fuel pump malfunctions. 6. Spark plug(s) fouled or incorrect type. 7. Spark plug cap(s) fitted incorrectly. 8. Poor connections or damaged ignition iring. 9. Ignition parts faulty. 10. Engine stop sitch lanyard not attached. 11. Shift lever in gear. 12. Engine inner parts damaged. 1. Check battery condition. Use battery of recommended capacity. 2. Tighten battery cables and clean battery terminals. 3. Check for cause of electric overload and repair. Replace fuse ith one of correct amperage. 4. Have serviced by a Yamaha dealer. 5. Attach lanyard. 6. Shift to neutral. 1. Fill tank ith clean, fresh fuel. 2. Fill tank ith clean, fresh fuel. 3. Clean or replace filter. 4. Read "STARTING ENGINE" section. 5. Have serviced by a Yamaha dealer. 6. Inspect spark plug(s). Clean or replace ith recommended type. 7. Check and re-fit cap(s). 8. Check ires for ear or breaks. Tighten all loose connections. Replace orn or broken ires. 9. Have serviced by a Yamaha dealer. 10. Attach lanyard. 11. Shift to neutral. 12. Have serviced by a Yamaha dealer. 5-1

111 Trouble Possible Cause Remedy C. Engine idles irregularly or stalls. 1. Spark plug(s) fouled or incorrect type. 2. Fuel system obstructed. 3. Fuel contaminated or stale. 4. Fuel filter clogged. 5. Failed ignition parts. 6. Warning system activated. 7. Spark plug gap incorrect. 8. Poor connections or damaged ignition iring. 9. Specified engine oil not used. 10. Thermostat faulty or clogged. 11. Carburetor adjustments incorrect. 12. Fuel pump damaged. 13. Air vent scre on the fuel tank closed. 14. Choke knob pulled out. 15. Motor angle too high. 16. Carburetor clogged. 17. Fuel joint connection incorrect. 18. Throttle valve adjustment incorrect. 19. Battery lead disconnected. 1. Inspect spark plug(s). Clean or replace ith recommended type. 2. Check for pinched or kinked fuel line or other obstructions in fuel system. 3. Fill tank ith clean, fresh fuel. 4. Clean or replace filter. 5. Have serviced by a Yamaha dealer. 6. Find and correct cause of arning. 7. Inspect and adjust as specified. 8. Check ires for ear or breaks. Tighten all loose connections. Replace orn or broken ires. 9. Check and replace oil as specified. 10. Have serviced by a Yamaha dealer. 11. Have serviced by a Yamaha dealer. 12. Have serviced by a Yamaha dealer. 13. Open the air vent scre. 14. Return to home position. 15. Return to normal operating position. 16. Have serviced by a Yamaha dealer. 17. Connect correctly. 18. Have serviced by a Yamaha dealer. 19. Connect securely. 5-2

112 Trouble Possible Cause Remedy D. Warning buzzer sounds or indicator lamp lights. E. Engine poer loss. 1. Cooling system clogged. 2. Engine oil level lo. 3. Heat range of spark plug incorrect. 4. Specified engine oil not used. 5. Engine oil contaminated or deteriorated. 6. Oil filter clogged. 7. Oil feed/injection pump malfunctions. 8. Load on boat improperly distributed. 9. Water pump/thermostat faulty. 1. Propeller damaged. 2. Propeller pitch or diameter incorrect. 3. Trim angle incorrect. 4. Motor mounted at incorrect height on transom. 5. Warning system activated. 6. Boat bottom fouled ith marine groth. 7. Spark plug(s) fouled or incorrect type. 8. Weeds or other foreign matter tangled on gear housing. 9. Fuel system obstructed. 10. Fuel filter clogged. 11. Fuel contaminated or stale. 12. Spark plug gap incorrect. 1. Check ater intake for restriction. 2. Fill oil tank ith specified engine oil. 3. Inspect spark plug and replace it ith recommended type. 4. Check and replace oil ith specified type. 5. Replace oil ith fresh, specified type. 6. Have serviced by a Yamaha dealer. 7. Have serviced by a Yamaha dealer. 8. Distribute load to place boat on an even plane. 9. Have serviced by a Yamaha dealer. 1. Have propeller repaired or replaced. 2. Install correct propeller to operate outboard at its recommended speed (r/min) range. 3. Adjust trim angle to achieve most efficient operation. 4. Have motor adjusted to proper transom height. 5. Find and correct cause of arning. 6. Clean boat bottom. 7. Inspect spark plug(s). Clean or replace ith recommended type. 8. Remove foreign matter and clean loer unit. 9. Check for pinched or kinked fuel line or other obstructions in fuel system. 10. Clean or replace filter. 11. Fill tank ith clean, fresh fuel. 12. Inspect and adjust as specified. 5-3

113 Trouble Possible Cause Remedy E. Engine poer loss. F. Engine vibrates excessively. 13. Poor connections or damaged ignition iring. 14. Failed ignition parts. 15. Specified engine oil not used. 16. Thermostat faulty or clogged. 17. Air vent scre closed. 18. Fuel pump damaged. 19. Fuel joint connection incorrect. 20. Heat range of spark plug incorrect. 21. Engine not responding properly to shift lever position. 1. Propeller damaged. 2. Propeller shaft damaged. 3. Weeds or other foreign matter tangled on propeller. 4. Motor mounting bolt loose. 5. Steering pivot loose or damaged. 13. Check ires for ear or breaks. Tighten all loose connections. Replace orn or broken ires. 14. Have serviced by a Yamaha dealer. 15. Check and replace oil ith specified type. 16. Have serviced by a Yamaha dealer. 17. Open the air vent scre. 18. Have serviced by a Yamaha dealer. 19. Connect correctly. 20. Inspect spark plug and replace it ith recommended type. 21. Have serviced by a Yamaha dealer. 1. Have propeller repaired or replaced. 2. Have serviced by a Yamaha dealer. 3. Remove and clean propeller. 4. Tighten bolt. 5. Tighten or have serviced by a Yamaha dealer. 5-4

114 MN20010 TEMPORARY ACTION IN EMERGENCY E EMH80010 IMPACT DAMAGE The outboard motor can be seriously damaged by a collision hile operating or trailering. Damage could make the outboard motor unsafe to operate If the outboard motor hits any object in the ater, follo the procedure belo; 1) Stop the engine immediately. 2) Inspect control system and all components for damage. Also, inspect the boat damage. 3) Hoever damage is found or not found, go back to a nearest harbor sloly and carefully. 4) Have a Yamaha dealer inspection of the outboard motor, before operating it again. 5-5

115 EMU00423 STARTER WILL NOT OPERATE If the starter mechanism does not operate (engine cannot be cranked ith the starter), the engine can be started ith an emergency starter rope. 8 Use this procedure only in an emergency and only to return to port for repairs. 8 When the emergency starter rope is used to start the engine, the start-ingear protection device does not operate. Make sure the gear shift lever/ remote control lever is in neutral. Otherise, the boat could unexpectedly start to move, hich could result in an accident. 8 Be sure no one is standing behind you hen pulling the starter rope. It could hip behind you and injure someone. 8 An unguarded rotating flyheel is very dangerous. Keep loose clothing and other objects aay hen starting the engine. Use the emergency starter rope only as instructed. Do not touch the flyheel or other moving parts hen the engine is running. Do not install the starter mechanism or top coling after the engine is running. 8 Do not touch the ignition coil, high voltage ire, spark plug cap or other electrical components hen starting of operating the motor. You could be shocked. 5-6

116 EMU00950 Emergency Starting Engine 1) Remove the top coling. 2) Remove the start-in-gear protection cable from the starter if equipped it ) Remove the starter/flyheel cover after removing the bolt(s). OFF ON START 4) Prepare the engine for starting. See STARTING ENGINE for procedures. Be sure the engine is in Neutral and that the lock plate is attached to the engine stop lanyard sitch. The main sitch must be ON if equipped it ) Pull out the choke knob hen a cold engine starts. After the engine start, return the choke knob. 6) Insert the knotted end of the emergency starter rope into the notch in the flyheel rotor and ind the rope several turns clockise. 7) Give a strong pull straight out to crank and start the engine. Repeat if necessary. 5-7

117 EMN50011 TREATMENT OF SUBMERGED MOTOR If the outboard motor is submerged, immediately take it a Yamaha dealer. Otherise, some corrosion may begin almost immediately. If you cannot immediately take the outboard motor to a Yamaha dealer, follo the procedure bello for taking care to minimize engine damage. 1) Thoroughly ash aay mud, salt, seaeed, etc. ith fresh ater. 2) Remove the spark plugs and face the spark plug holes donard to allo any ater, mud or contaminants to drain. 3) Drain the fuel from the carburetor. 4) Feed fogging oil or engine oil through the carburetors and spark plug holes hile cranking ith the manual starter or emergency starter rope. 5) Take the outboard motor to a Yamaha dealer as soon as possible. cc Do not attempt to run the motor until it has been completely inspected

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119 EMP00010 Chapter 6 INDEX 1 INDEX