Professional Shop Manual

Transcription

1 Professional Shop Manual Troy-Bilt Pack Horse Powered WheelBarrow NOTE: These materials are for use by trained technicians who are experienced in the service and repair of outdoor power equipment of the kind described in this publication, and are not intended for use by untrained or inexperienced individuals. These materials are intended to provide supplemental information to assist the trained technician. Untrained or inexperienced individuals should seek the assistance of an experienced and trained professional. Read, understand, and follow all instructions and use common sense when working on power equipment. This includes the contents of the product s Operators Manual, supplied with the equipment. No liability can be accepted for any inaccuracies or omission in this publication, although care has been taken to make it as complete and accurate as possible at the time of publication. However, due to the variety of outdoor power equipment and continuing product changes that occur over time, updates will be made to these instructions from time to time. Therefore, it may be necessary to obtain the latest materials before servicing or repairing a product. The company reserves the right to make changes at any time to this publication without prior notice and without incurring an obligation to make such changes to previously published versions. Instructions, photographs and illustrations used in this publication are for reference use only and may not depict actual model and component parts. Copyright 2009 MTD Products Inc. All Rights Reserved MTD Products Inc - Product Training and Education Department FORM NUMBER /2009

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3 Table of Contents Chapter 1: Introduction... 1 About the text format Safety Fasteners Assembly instructions Understanding model and serial numbers The Troy-Bilt Pack Horse Chapter 2: Drive belt and cables... 5 Drive control cables Drive cable adjustment Drive belt Chapter 3: brakes...9 Brake adjustment Brake removal/replacement Brake cable Chapter 4: Transmission Neutral control adjustment Transmission release cable Transmission removal/replacement Chapter 5: Pivot bar and caster wheels Caster wheels Caster wheel yoke and bushings Pivot Bar Chapter 6: Maintenance...23 Lubrication Engine maintenance Changing the engine oil Clean the engine Recommended service intervals I

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5 CHAPTER 1: INTRODUCTION Professional Service Manual Intent: This manual is intended to provide service dealers with information that will help them maintain and repair the Troy-Bilt Pack Horse. Disclaimer: The information contained in this manual is correct at the time of writing. Both the product and the information about the product are subject to change without notice. About the text format Certain flags and key words are used to indicate the nature of the text that accompanies them. They are as follows:! CAUTION CAUTION: Indicates a potentially hazardous situation that, if not avoided, may result in minor or moderate injury. It may also be used to alert against unsafe practices.! WARNING WARNING: Indicates a potentially hazardous situation that, if not avoided, could result in death of serious injury.! DANGER DANGER: Indicates an imminently hazardous situation that, if not avoided, will result in death or serious injury. This signal word is to be limited to the most extreme situations. NOTE: NOTE is used to point-out helpful information that may not fit as a step in a procedure. 1. Numbered steps indicate specific things that should be done, and the order in which they should be done. 1a. Sub steps will be lettered and nested within steps. Two or more sub steps may be combined to describe the actions required to complete a step. Bullet points: Indicate sub-steps or points of interest, without implying order or relative importance. Disclaimer: This manual is intended for use by trained, professional technicians. Common sense in operation and safety is assumed. In no event shall MTD be liable for poor text interpretation, or poor execution of the procedures described in the text. If the person using this manual is uncomfortable with any procedures they encounter, they should seek the help of a qualified technician. 1

6 Safety This Service Manual is meant to be used along with the Operator s Manual. Read the Operator s Manual and familiarize yourself with the safety and operational instructions for the equipment being worked on. Keep a copy of the Operator s Manual for quick reference. Operator s manuals may be viewed for free at the brand support website. It will be necessary to have the complete model and serial number for the equipment.! CAUTION Be prepared in case of emergency: Keep a fire extinguisher nearby Keep a first aid kit nearby Keep emergency contact numbers handy Replace any missing or damaged safety labels on shop equipment. Replace any missing or damaged safety labels on equipment being serviced.! WARNING Grooming and attire: Do not wear loose fitting clothing that may become entangled in equipment. Long hair should be secured to prevent entanglement in equipment. Jewelry is best removed. Protective gear: includes, but is not limited to Clear eye protection while working around any machinery Protective gloves where necessary Armored footwear when working around any machinery Hearing protection in noisy environments Chemically resistant gloves when working with chemicals or solvents Respirator when working with chemical or solvents Appropriate tinted eye protection when cutting or welding Fame resistant headgear, jacket, chaps when cutting or welding! CAUTION Remember that some hazards have a cumulative effect. A single exposure may cause little or no harm, but continual or repeated exposure may cause very serious harm. Clean spills and fix obviously dangerous conditions as soon as they are noticed. Lift and support heavy objects safely and securely. Be aware of your surroundings and potential hazards that are inherent to all power equipment. All the labels in the world cannot protect a technician from an instant of carelessness.! DANGER Exhaust fumes from running engines contain carbon monoxide (CO). Carbon monoxide is a colorless odorless gas that is fatal if inhaled in sufficient quantity. Only run engines in well ventilated areas. If running engines indoors, use an exhaust evacuation system with adequate make-up air ventilated into the shop. 2

7 Fasteners The fasteners used on the equipment described in this manual, and the engine that powers it are a combination of metric and fractional inch. For this reason, wrench sizes are frequently identified in the text, and measurements are given in U.S. and metric scales. If a fastener has a locking feature that has worn, replace the fastener or apply a small amount of releasable thread locking compound such as Loctite 242 (blue). Some fasteners like cotter pins are single-use items that are not to be reused. Other fasteners such as lock washers, retaining rings, and internal cotter pins (hairpin clips) may be reused if they do not show signs of wear or damage. This manual leaves that decision to the judgement of the technician. Assembly instructions Torque specifications may be noted in the part of the text that covers assembly. They may be summarized in tables along with special instructions regarding locking or lubrication. Whichever method is more appropriate will be used. In many cases, both will be used so that the manual is handy as a quick-reference guide as well as a step-by-step procedure guide that does not require the user to hunt for information. Lubricant quantity and specification may be noted in the part of the text that covers maintenance, and again in the section that covers assembly. They may also be summarized in tables along with special instructions. Whichever method is more appropriate will be used. In many cases, the information will be found in several places in the manual so that the manual is handy as a quick-reference guide as well as a step-by-step procedure guide that does not require the user to hunt for information. The level of assembly instructions provided will be determined by the complexity of reassembly, and by the potential for damage or unsafe conditions to arise from mistakes made in assembly. Some instructions may refer to other parts of the manual for subsidiary procedures. This avoids repeating the same procedure two or three times in the manual. 3

8 The Troy-Bilt Pack Horse The Troy-Bilt Pack Horse is a motorized wheelbarrow designed to help home owners with demanding tasks around the house. See Figure 1.1. It is equipped with a HydroGear hydrostatic transmission The engine is a Briggs & Stratton 650 Series Engine It has the capacity of: 500 lbs on level ground. 400 lbs on a slope. Maximum safe slope angle of 10 o. Figure 1.1 Understanding model and serial numbers The model number of a the Pack Horse described in this manual is 24A The model and serial number tag is located on the back of the frame. A break down of what the model number means is as follows: indicates that this is a chore performer - - -A indicates the sales revision indicates the starter (recoil starter) indicates it is a wheelbarrow indicates the transmission indicates the handle panel style indicates the engine indicates the customer The serial number is 1J056G The serial number reads as follows: 1...engineering level..f...month of production (F = June) day of the month last digit of the year...g...plant it was built in assembly line number number of unit built Additional technical and service information may also be available to our company authorized service center personnel through our company corporate offices, regional parts distributors and regional service center field support personnel. Please contact the designated support office in your area or our corporate offices directly should further service information be needed. MTD Products LLC P.O. Box Cleveland, OH Telephone: (800)

9 Belts and Cables CHAPTER 2: DRIVE BELT AND CABLES Drive control cables Anchor point Reverse cable Forward cable Anchor point Figure 2.1 The Troy-Bilt Pack Horse is equipped with a HydroGear transmission similar to the one used on lawn tractors. The Pack Horse uses cables instead of linkages to operate the transmission. The forward control cable runs down the right side of the wheelbarrow and the reverse cable runs down the left side of the wheelbarrow. The forward control cable connects to the front side of the control arm on the left side of the transmission and the reverse cable connects to the rear. See Figure 2.1. To replace a drive cable: NOTE: The drive lever and cable are serviced as one assembly. 1. Release the barbed fitting on the end of the cable housing from it s anchor point. NOTE: A 9mm open-end wrench or a Ford fuel line tool can be used to release the barbs. Blow gun Shoulder bolt Figure 2.2 Nut 2. Unhook the drive cable from the control arm. 3. Remove the handle grip on the side to be replaced. NOTE: Compressed air can be blown into the grip to assist in sliding it off of the handlebar. See Figure Remove the shoulder bolt that holds the drive lever and cable to the handlebar using a 1/2 wrench and a 3/16 hex key. See Figure Map out the route the cable follows on the wheelbarrow. 6. Slide the drive cable and lever off of the wheelbarrow. 7. Install the drive cable and lever by following the previous steps in reverse order. NOTE: Route the cable in the same path as the old cable. 8. Adjust the drive cable by following the procedures described in the drive cable adjustment section of this chapter. 9. Test drive the wheelbarrow before returning it to service. 5

10 Belts and Cables Drive cable adjustment The drive control levers should have a 1/16 movement before pulling the cables. NOTE: If excessive slack is present in the forward or reverse cables or if the wheelbarrow s drive is disengaging intermittently during operation, the cables may need to be adjusted.! CAUTION If the forward or reverse cables are to tight, the wheelbarrow will drive as soon as the brakes are released. NOTE: If both of the drive levers are depressed at the same time, the forward drive cable will out pull the reverse cable and the wheelbarrow will drive forward. To adjust the drive cables: NOTE: If the wheelbarrow moves forward, one or both of the cables are too tight. If the wheelbarrow moves in reverse, the reverse cable is too tight. 1. Measure the movement of the tip of the drive control levers before they pull on the cables. See Figure /16 Figure Hold the bottom of the in-line adjuster while twisting it to tighten or loosen the drive cable. See Figure Test the cables to see if they are too tight. 3a. Move the wheelbarrow to a safe area. 3b. Start the engine. 3c. Depress the brake levers without touching the drive control levers. 3d. If the wheelbarrow moves, one or both of the drive cables are too tight. 4. Test drive the wheelbarrow in a safe area before returning it to service. Figure 2.4 In-line adjuster Tighten Loosen 6

11 Belts and Cables Drive belt To remove/replace the drive belt: 1. Pull the idler pulley far enough to the left to slip the belt off of it. See Figure 2.5. Idler pulley Front of wheelbarrow Figure Remove the belt cover using a 3/8 wrench. See Figure 2.6. Belt cover Figure Slide the belt off of the engine pulley. 4. Slide the belt off of the transmission pulley. NOTE: Avoid damaging the hydro cooling fan. 5. Remove the belt from the wheelbarrow. 6. Install the drive belt by following the previous steps in reverse order. 7. Test drive the wheelbarrow in a safe area before returning it to service. 7

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13 Brakes CHAPTER 3: BRAKES Brake adjustment Transmission release lever Figure Test the operation of the brakes: 1a. Move the transmission release lever to the ON position. See Figure b. Attempt to push the wheelbarrow without squeezing any of the control levers. If it can be pushed by hand without skidding a front wheel, check and adjust the brakes. 1c. Squeeze the brake control lever. 1d. Attempt to push the wheelbarrow again. If it cannot be pushed with reasonable effort, check the transmission release cable. 2. Release the brakes by clamping the brake control lever down. 3. Visually inspect the brake to confirm that it functions properly. 4. Check the gap between the brake rotor and the brake pads. See Figure 3.2. There is a fixed pad in the transaxle housing. There is a moving pad in the brake caliper. Wiggle the brake rotor slightly, and attempt to Feeler gauge insert a.015 (.38mm) feeler gauge between the rotor and either pad. 4a. Adjust the gap, if necessary, so that the feeler Rotor gauge slips between the pad and the rotor with light pressure. If adjustment is necessary, remove and discard the cotter pin that locks the adjusting nut. Figure 3.2 Turn the nut to adjust the gap. Release and apply the brake control lever, then re-check the gap. If the gap is consistent, install a new cotter pin to secure the adjustment nut. 4b. If the brake seems to be sticking, or the rotor is discolored from dragging, remove the brake yoke for repair or replacement. 4c. Re-test the operation of the brakes before returning the wheelbarrow to service. NOTE: The hydrostatic transaxle creates it s own braking force from the hydraulic pressure in the hydraulic motor. The brakes are more of a parking brake than a service brake. They generally show little wear over the life of the wheelbarrow. 9

14 Brakes Brake removal/replacement NOTE: There are two main reasons to remove the caliper: to replace the pads, or to free stuck parts. 1. The brake yoke is located on the left side of the transaxle. See Figure 3.3. The brake cable connects to the top hole on the brake arm. The Heavy brake spring draws the brake arm to the ON position. 2. Disconnect the brake cable from the brake arm. 3. Loosen both brake yoke bolts using a 3/8 wrench. 4. Slip the return-to-neutral spring off of the spacer on the front bolt. 5. The yoke and outer pad will separate from the transaxle. 6. Inside the brake yoke: See Figure 3.4. A steel backing plate fits between the friction pad and the actuator pins. The pins fit into holes in the brake yoke housing. The brake arm acts as a cam, pushing the pins when it rotates. A small compression spring pushes the cam arm away from the pins, helping to release the brake. 7. With the brake yoke removed, the brake rotor floats on a splined brake shaft. See Figure 3.5. The by-pass arm must be removed to take the rotor off. The flat side goes in, the collar faces out. A second brake pad fits into a recess behind the rotor. 8. Assembly notes: If any lubricant is used on the pins or between the brake shaft and the rotor, apply it VERY sparingly. Apply a small amount of thread locking compound such as Loctite 242TM (blue) to the threads of the brake yoke bolts. Tighten the brake yoke bolts to a torque of 80 to 120 in-lbs. (9 to 14 N-m). NOTE: Adjust and test the brakes after any work on brake system. Cotter pin By-pass arm Brake arm Castle nut Brake cable Brake yoke Figure 3.3 Figure 3.4 Brake pad Brake arm Spring Brake yoke Actuator pins (2) Backing plate Friction pad Brake rotor Figure

15 Brakes Brake cable Brake cable Brake arm Barbed fitting Figure 3.6 Hole in torque bracket Figure 3.7 NOTE: If the wheelbarrow does not come to a complete stop when the brake lever is released, or if the wheelbarrow can roll with the brake lever released, the brake needs to be adjusted. To remove/replace the brake cable: 1. Release the barbed fitting on the end of the cable housing from the transmission torque bracket. NOTE: A 9mm open-end wrench or a Ford fuel line tool can be used to release the barbs. 2. Push the cable into the hole in the transmission torque bracket enough to make the spring on the end of the cable go slack. 3. Unhook the brake cable from the brake arm. 4. Slide the inner cable and the spring end through the hole in the transmission torque bracket. See Figure Unhook the brake cable from the brake arm. 6. Release the barbed fitting on the end of the cable housing from the cable bracket on the handle bar. See Figure Slide the inner cable through the slot in the bracket. 8. Unhook the Z-fitting from the brake lever. 9. Slide the cable out of the wheelbarrow. 10. Install the brake cable by following the previous steps in reverse order. 11. Test drive the wheelbarrow in a safe area before returning it to service. Cable bracket Belt Routing Figure 3.8 Figure

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17 Transmission CHAPTER 4: TRANSMISSION The Troy-Bilt Pack Horse is equipped with a HydroGear transmission similar to the one used on lawn tractors. The HydroGear Service and Repair manual for the transmission on this wheel barrow is form number BLN The training video BLN covers this transmission and is available from HydroGear. The transmission used on the Pack Horse wheelbarrow is equipped with a dampener. The dampener smooths the acceleration and deceleration of the transmission. See Figure 4.1. Dampener Figure 4.1 Neutral control adjustment NOTE: Neutral control rarely goes out of adjustment on its own. If it needs adjustment, check for damaged cables or signs of tampering.! CAUTION The wheelbarrow engine and drive system must be operated to complete this procedure. Confirm that no hazards will be incurred by running the engine or operating the drive system:! CAUTION Work in a well vented area to prevent carbon monoxide poisoning or asphyxiation. Be careful to avoid contact with hot parts or moving parts. 1. Loosen the wheel bolt on the left front wheel of the wheelbarrow using a 1/2 wrench. 2. Lift and safely support the front of the wheelbarrow. 3. Remove the left front wheel. 4. Release the brakes by clamping the brake control lever down. 13

18 Transmission 5. Confirm that the drive control cables are not pulling on the control arm. The roller on the control arm must be centered in the elbow of the control cam. See Figure 4.1. If the roller is not centered in the elbow of the control cam, identify and correct the problem before proceeding. 6. Loosen the socket head cap screw that locks the adjusting puck using a 1/4 allen wrench. 7. Have a 1-1/8 wrench handy, or size an adjustable wrench to fit the adjusting puck. See Figure 4.3. Roller Control cam Adjusting puck Figure 4.2 Figure Start the engine and advance throttle to maximum RPM. 9. Set the adjusting puck so that neither wheel rotates. The brake rotor should also be stationary. 10. Lock the adjusting puck, then confirm that the wheels and brake rotor are still motionless. 11. Turn-off the engine. 12. Reinstall the front wheel: 12a. Lubricate the axle with anti-seize compound before positioning the wheel on the wheelbarrow. 12b. Apply thread locking compound such as Loctite 242 TM (blue) to the threads of the wheel bolt. 12c. Slide the wheel assembly onto the axle shaft. 12d. Install the bolt and belleville washer so that the inside diameter contact area of the washer is against the bolt head and the outside diameter contact area is against the wheel. 13. Lower the tractor to the ground. 14. Tighten the bolt to a torque of ft-lbs. (16-20 N-m). 15. Test the drive system and all safety features before returning the unit to service. 14

19 Transmission Transmission release cable To remove/replace the transmission release cable: 1. Release the barbed fitting on the end of the cable housing from the transmission torque bracket. NOTE: A 9mm open-end wrench or a Ford fuel line tool can be used to release the barbs. 2. Slide the inner cable through the slot in the torque bracket. 3. Unhook the transmission release cable from the by-pass arm on the transmission. See Figure 4.5. By-pass arm Release cable Figure Release the barbed fitting on the end of the cable housing from the pivot bar mounting bracket. 5. Slide the inner cable through the slot in the pivot bar mounting bracket. See Figure 4.4. Slot pivot bar mounting bracket Z-fitting Figure 4.5 NOTE: The belt cover was removed for a clearer picture. 6. Unhook the Z-fitting from the transmission release lever. 7. Install the transmission release cable by following the previous steps in reverse order. 8. Test drive the wheelbarrow before returning it to service. 15

20 Transmission Transmission removal/replacement 1. Loosen the wheel bolt on the left front wheel of the wheelbarrow using a 1/2 wrench. 2. Lift and safely support the front of the wheelbarrow. 3. Remove the front wheels. 4. Pull the idler pulley far enough to the left to slip the belt off of it. See Figure 4.6. Idler pulley Front of wheelbarrow Transmission torque bracket Figure Slide the belt off of the transmission pulley. 6. Release the barbed fitting on the end of the brake cable housing from the transmission torque bracket. See Figure 4.7. NOTE: A 9mm open-end wrench or a Ford fuel line tool can be used to release the barbs. Brake arm Brake cable Barbed fitting Figure Push the cable into the hole in the transmission torque bracket far enough to make the spring on the end of the cable go slack. 8. Unhook the brake cable from the brake arm. 9. Slide the inner cable and the spring end through the hole in the transmission torque bracket. 10. Unhook the brake cable from the brake arm. 16

21 Transmission 11. Release the barbed fitting on the end of the transmission release cable housing from the transmission torque bracket. 12. Slide the inner cable through the slot in the torque bracket. 13. Unhook the transmission release cable from the bypass lever on the transmission. See Figure Release the barbed fitting on the end of the reverse drive cable housing from transmission torque bracket. 15. Unhook the reverse drive cable from the control arm. 16. Remove the two screws that secure the transmission to the torque bracket using a 1/2 wrench. 17. Support the transmission to prevent it from falling off of the wheelbarrow. By-pass lever Figure 4.8 Release cable 18. Remove the four nuts and bolt that fasten the transmission and the support brackets to the frame using a 1/2 wrench. See Figure Carefully lower the transmission out of the wheelbarrow enough to get at the forward drive cable Release the barbed fitting on the end of the forward drive cable housing from bracket on the transmission. 21. Unhook the reverse drive cable from the control arm. 22. Carefully lower the transmission all the way out of the wheelbarrow. 23. Install the transmission by following the previous steps in reverse order. 24. Test drive the wheelbarrow in a safe area before returning it to service. Bolts Figure 4.9 Nuts 17

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23 Pivot bar and caster wheels CHAPTER 5: PIVOT BAR AND CASTER WHEELS Caster wheels The Pack Horse is equipped wit two caster wheels. These wheels have ball bearing in the rims and tubed tires. There are no service parts for these wheel and tire assemblies. They must be replaced as whole assemblies. To remove/replace a caster wheel: Yoke 1. Lift and safely support the rear of the wheelbarrow. 2. Remove the axle bolt and nut using a pair of 9/16 wrenches. See Figure Slide the caster wheel out of the yoke. Caster wheel Figure 5.1 Spacer 4. Slide the spacer out of the wheel hub. 5. Install the caster wheel by following the previous steps in reverse order. 6. Test drive the wheelbarrow in a safe area before returning it to service. Figure

24 Pivot bar and caster wheels Caster wheel yoke and bushings To remove/replace the caster wheel yoke: 1. Lift and safely support the rear of the wheelbarrow. 2. Remove the caster wheel by following the procedures described in the previous section of this chapter. 3. Remove the screw and fender washer that secures the yoke to the pivot bar using a 9/16 wrench 4. Slide the yoke out of the pivot bar. See Figure 5.3. NOTE: There are two thrust washers and a needle thrust bearing between the bottom of the pivot bar and the yoke. 5. Install the yoke by following the previous steps in reverse order. 6. Test drive the wheelbarrow in a safe area before returning it to service. Fender washer Needle bearing Figure 5.3 Screw To remove/replace the yoke bushings: 1. Lift and safely support the rear of the wheelbarrow. 2. Remove both yokes by following the procedures described in the previous section of this chapter. 3. Pry the bushings out of the pivot bar. See Figure 5.4. NOTE: When replacing the bushing, replace all four at the same time. 4. Drive in the new bushings with a rubber mallet or a soft faced hammer. 5. Install the yokes and wheels by following the procedures described in the previous section of this chapter. 6. Test drive the wheelbarrow in a safe area before returning it to service. Figure 5.4 Bushings 20

25 Pivot bar and caster wheels Pivot Bar To remove/replace the pivot bar: 1. Lift and safely support the rear of the wheelbarrow. 2. Remove both yokes by following the procedures described in the previous section of this chapter. 3. Remove the belt cover by removing the four screws that secure it using a 3/8 wrench. See Figure 5.5. Belt cover Figure 5.5 Slot pivot bar mounting bracket 4. Release the barbed fitting on the end of the cable housing from the pivot bar mounting bracket. 5. Slide the inner cable through the slot in the pivot bar mounting bracket. See Figure Unhook the Z-fitting from the transmission release lever. Z-fitting Figure Remove the two screws that fasten each of the frame support brackets to the frame using a 1/2 wrench. See Figure 5.7. frame support bracket Pivot bar Figure

26 Pivot bar and caster wheels 8. Remove the nuts and bolts that fasten the spacer tubes to the pivot bar mounting bracket using a pair of 9/16 wrenches. See Figure Remove the pivot bar shoulder bolt using a 3/4 and 9/16 wrench. 10. Slide the pivot bar out of the wheelbarrow. Pivot bar shoulder bolt Spacers Figure Remove both of the center bushings from the pivot bar. See Figure Install the pivot bar by following the previous steps in reverse order. 13. Test drive the wheelbarrow in a safe area before returning it to service. Bushing Figure

27 Maintanence CHAPTER 6: MAINTENANCE Lubrication To help keep the Pack Horse wheelbarrow in proper running order it is recommended the following lubrication intervals be used (adjustable to local conditions). Use a high quality petroleum grease to lubricate the tractor. Lube Point Number of fittings Interval Rear axles 2 25 hours Front axles Coat the shafts yearly NOTE: Lubricate all of the pivot points with a light coating of oil once a season. Engine maintenance The recommended maintenance intervals listed in this manual are a guideline. They are adjustable for local conditions. NOTE: For engine repair and maintenance procedures refer to the engine manufacturer. Changing the engine oil 1. Pull the idler pulley far enough to the left to slip the belt off of it. See Figure 5.1. Idler pulley Front of wheelbarrow Figure

28 Maintanence 2. Remove the belt cover using a 3/8 wrench. See Figure 5.2. Belt cover Figure Slide the belt off of the engine pulley. 4. Remove the oil dip stick. 5. Place a suitable oil receptacle under the engine. 6. Remove the drain plug using a 3/8 drive ratchet and an extension. Drain plug Figure Install the drain plug when all of the oil has drained out. 8. Dispose of the used oil in a safe and legal manner. 9. Fill the engine with 20 oz. of oil that meets the engine manufacturers specifications. 10. Test drive the wheelbarrow in a safe area before returning it to service. 24

29 Maintanence Clean the engine Air cooled engines cool better if they are clean. Check for nesting or signs of nesting especially after dormant season storage. Plugged air filter Mouse nest Figure 5.4 Recommended service intervals Before Each Use Every 10 hours Every 25 hours Every 50 hours Every 100 hours Prior to storing Check Engine Oil Level X X Check Air Filter X Clean and Re-oil Air Filter s Foam Pre-cleaner X Replace the Air Filter X Change the Engine Oil X Lube the Rear Axles X Clean the Engine Cooling Fins X Check the Spark Plug Gap & Condition X X Replace the Fuel FIlter X 25

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