SERVICE MANUAL NUMBER 14 Tble of Contents POWER TRIM Section 5D - Auto Trim II AUTO TRIM II 1 B Auto Trim II System................. 5D-2 Description...................... 5D-2 Auto Trim II Opertion............... 5D-2 Auto Mode Opertion............. 5D-3 Mnul Mode Opertion.......... 5D-4 Electricl System Overlod Protection. 5D-6 Auto Trim Limit Adjustment........... 5D-6 Adjusting Sterndrive Unit Trim Angle 5D-7 Control Module Adjustment........... 5D-9 Trim Position Indictor Adjustment..... 5D-10 Wiring Digrm..................... 5D-11 5 D 90-818177--3 APRIL 2001 Pge 5D-1
AUTO TRIM II SERVICE MANUAL NUMBER 14 Auto Trim II System Description The Auto Trim System consists of the following mjor components: Auto Trim Pump - sme pump tht is used on the stndrd power trim models. Control Module - solid-stte electronic device tht senses engine rpm nd regultes the time t which the sterndrive unit trims IN nd OUT when operting in the AUTO mode. Module is protected by 20-mp fuse. Mode Switch - llows the opertor to select either AUTO or MANUAL trim opertion from the dsh. Mnul Trim Control - will only function with mode switch in the MANUAL mode nd ignition switch in the RUN position. Allows the opertor to rise nd lower the sterndrive unit for trilering, beching, lunching nd shllow wter opertion. Also, llows the opertor to mnully djust the sterndrive unit trim ngle while underwy in situtions where utomtic trimming is not desired (rough ses, etc.). Trim Limit Switch - Estblishes the mximum trim OUT limit in both the MANUAL nd AUTO mode. Prevents sterndrive unit from moving out of the gimbl ring support flnges, which could cuse possible dmge to sterndrive if it were to occur t higher engine speeds. Auto Trim II Opertion The Auto Trim system is designed to llow either utomtic or mnul trimming of the bot while underwy - in ddition to llowing sterndrive unit to be rised for trilering, beching, lunching or shllow wter opertion. A 2-position switch on dshbord llows the opertor to select the mode desired. 22217 Pge 5D-2 90-818177--3 APRIL 2001
SERVICE MANUAL NUMBER 14 Auto Mode Opertion AUTO TRIM II WARNING Sterndrive unit will utomticlly lower from the rised position when the ignition switch is turned to the RUN position nd mode switch is plced in the AUTO mode. BE SURE THAT NO ONE IS IN THE AREA OF THE STERNDRIVE UNIT. With mode switch in the AUTO mode, the sterndrive unit will move utomticlly to properly trim the bot while underwy. This llows bot opertor to keep both hnds on the steering wheel nd to direct opertor s full ttention to driving the bot. At engine speeds below 3100 rpm, the sterndrive unit will remin in the full IN position. This will force the bow of the bot down nd help it get up on plne quickly. Once engine reches 3100 rpm nd fter 5-6 second dely (to ensure tht bot is up on plne), the sterndrive unit will utomticlly trim OUT to preset position for mximum bot speed nd efficiency. Trim OUT position cn be djusted to fine tune the trim ngle for ech individul bot. Upon decelertion, the sterndrive unit will trim IN when engine reches 2600 rpm. Most bots will still be up on plne t this point. After sterndrive reches full IN position, the trim pump motor will continue to run for pproximtely 5 seconds. NOTE: The AUTO mode lso cn be used to lower the sterndrive unit from the fully rised (trilering) position. By plcing ignition switch in RUN position nd mode switch in AUTO mode, the sterndrive unit will utomticlly lower to the full IN position. Be sure tht no one is in the re of the sterndrive unit. 3 to 5 Bot Running Above Plning Speed Bot Running Below Plning Speed 90-818177--3 APRIL 2001 Pge 5D-3
AUTO TRIM II SERVICE MANUAL NUMBER 14 Mnul Mode Opertion Plcing the mode switch in the MANUAL position will dectivte the AUTO system nd llow the opertor to djust sterndrive unit position, using the mnul trim control. Typicl controls re shown following. Mnul trimming my be desirble to fine tune the trim ngle for prticulr wter condition or bot lod, or in situtions where greter control over the trim opertion is needed. Mnul trim control lso must be used to rise the sterndrive unit for trilering, beching, lunching nd shllow wter opertion. Ignition switch must be in the RUN position for mnul trim control to function. RAISING STERNDRIVE UNIT TO TRAILER POSITION 1. Press the triler button until sterndrive unit reches desired height or end of upwrd trvel. 22174 -Triler Button NOTE: Some power trim pump motors re protected from overheting by n internl circuit breker. If trilering switch(es) re held depressed fter sterndrive unit reches end of upwrd trvel, internl circuit breker will open nd pump will stop. If this should hppen, relese switch(es) nd llow motor to cool for pproximtely 2 minutes. Once motor is cool, circuit breker will reset utomticlly, nd trim opertion my be resumed. CAUTION DO NOT run engine bove idle rpm with unit rised for shllow wter opertion, s sterndrive unit is out beyond gimbl ring support flnges nd hs no side support. USE EXTREME CAUTION WHEN OPERATING BOAT WITH STERNDRIVE UNIT RAISED. Pge 5D-4 90-818177--3 APRIL 2001
SERVICE MANUAL NUMBER 14 TRIMMING STERNDRIVE UNIT OUT (BOW UP) AUTO TRIM II 1. Press UP/OUT Button until sterndrive unit moves to properly trim bot or trim limit switch stops outwrd trvel. 22174 -UP/OUT Button CAUTION NEVER trim the sterndrive unit OUT using the Triler switch(es) while bot is underwy. Severe dmge to sterndrive unit my result if the unit is rised beyond the gimbl ring support flnges t engine speeds bove idle RPM. TRIMMING STERNDRIVE UNIT IN (BOW DOWN) 1. Press IN/DOWN Button until sterndrive unit moves to properly trim bot or until sterndrive unit reches end of downwrd trvel. 70023 -IN/DOWN Button 90-818177--3 APRIL 2001 Pge 5D-5
AUTO TRIM II SERVICE MANUAL NUMBER 14 Electricl System Overlod Protection The Auto Trim electricl system is protected from overlod by 110-mp fuse, nd 20-mp in-line fuse t control module positive (+) bttery led nd 20-mp in-line fuse t ignition switch (if Quicksilver ignition switch is used). If bot is equipped with 3-Button Control Pnel, 20-mp in-line fuse lso is locted t pnel. If Auto Trim electricl system becomes inopertive, check for blown fuse. If fuse hs blown, the cuse for overlod MUST BE found nd corrected BEFORE replcing fuse. Auto Trim Limit Adjustment In most cses, best ll-round performnce is obtined with sterndrive unit djusted so tht front of hull will be slightly out of wter when bot is on plne. Bot Properly Trimmed Adjusting the sterndrive unit OUT from this position will tend to rise the bow of the bot, reducing the wetted surfce of the hull nd, in some cses, incresing bot speed. If trimmed out excessively, bouncing, porpoising, propeller ventiltion nd possible difficult steering control could result. Bow Too High - Move Sterndrive Unit IN Adjusting the sterndrive unit IN from norml position will force the bow of the bot down, incresing the wetted surfce of the hull nd, in some cses, improving bot ride in rough wter (t prtil throttle). However, this will reduce bot speed. Bow Too Low - Move Sterndrive Unit OUT Pge 5D-6 90-818177--3 APRIL 2001
SERVICE MANUAL NUMBER 14 Adjusting Sterndrive Unit Trim Angle AUTO TRIM II DRY DOCK PROCEDURE WARNING When djusting trim limit use extreme cre tht engine is not ccidentlly strted nd keep cler of re ner propeller. Also, use cre to prevent plcing hnds in n re where they could be injured by sterndrive unit movement. CAUTION Trim limit switch MUST BE djusted exctly s stted following. If switch is djusted incorrectly, sterndrive unit my move out beyond the gimbl ring support flnges nd severe dmge to sterndrive unit my result. If more trim OUT cpbility is desired, perform the following. 1. Plce sterndrive unit in the full IN/DOWN position. 2. Loosen trim limit switch retining screws. 3. Turn trim limit switch clockwise to end of djusting slots. b b Trim Limit Switch -Retining Screws b-adjusting Slots 71221 4. Plce uto trim mode switch in the MANUAL mode. 5. Turn ignition key to the RUN position. Auto Trim Mode Switch 76848 90-818177--3 APRIL 2001 Pge 5D-7
AUTO TRIM II SERVICE MANUAL NUMBER 14 6. With the ssistnce of nother person ctute mnul trim control switch used to trim sterndrive unit OUT (DO NOT use Triler switch) nd turn trim limit switch SLOWLY counterclockwise until trim cylinders extend to dimension shown. Retighten trim limit switch retining screws. -Trim Limit Dimension 20-3/4in. (520 mm) 70136 ON-WATER PROCEDURE 7. Turn ignition key OFF. 1. Run bot long reltively smooth stretch of wter nd trim bot with mnul trim control until optimum bot performnce is chieved. 2. After finding trim ngle tht provides best performnce, stop engine (without chnging sterndrive unit trim ngle). Accurtely mesure distnce between trim cylinder end cp nd pivot end. 3. Plce sterndrive unit in the full IN position. 4. Loosen trim limit switch retining screws. 5. Turn trim limit switch clockwise to end of djusting slots. b b 71221 Trim Limit Switch -Retining Screws b- Adjusting Slots 6. Leving uto trim mode switch in the MANUAL mode, turn ignition key to RUN position. 7. With the ssistnce of nother person, ctute mnul trim control switch used to trim sterndrive unit OUT nd turn trim limit switch SLOWLY counterclockwise until trim cylinders extend to dimension recorded in STEP 2. Tighten switch retining screws securely. Pge 5D-8 90-818177--3 APRIL 2001
SERVICE MANUAL NUMBER 14 AUTO TRIM II 8. Run bot with uto trim mode switch in AUTO position t severl speeds, through turns under vrious wter nd lod conditions, if bot does not perform to stisfction, repet djusting procedure. WARNING Difficulties in hndling nd opertionl control my result if sterndrive unit is djusted OUT too fr. If difficulties re encountered, sterndrive unit trim ngle MUST BE moved IN the mount necessry to eliminte the problem nd void possible sfety hzrd. Control Module Adjustment 1. Completely turn djustment knob on control module COUNTERCLOCKWISE. 2. Turn knob bck CLOCKWISE four clicks. 3. With uto trim mode switch in AUTO position nd the sterndrive unit trimmed full IN/DOWN, ccelerte bot slowly while wtching trim guge. 4. If bot is on plne well before sterndrive unit begins to trim out (this my hppen with lighter, fster bots), rotte djustment knob COUNTERCLOCKWISE one click nd ccelerte bot slowly. Continue procedure until bot is on plne pproximtely five or six seconds before trim out occurs. 5. If bot is not on plne before sterndrive unit begins to trim out (this my hppen with slower, hevier bots), rotte djustment knob clockwise one click nd ccelerte bot slowly. Control Module -Adjustment Knob 22178 90-818177--3 APRIL 2001 Pge 5D-9
AUTO TRIM II SERVICE MANUAL NUMBER 14 Trim Position Indictor Adjustment With ignition key in the RUN position, check Auto Trim indictor to mke sure tht needle points to bottom of the scle when sterndrive unit is IN/DOWN. If needle is not t bottom of scle, perform following steps: Trim Position Indictor WARNING 22175 While performing this djustment, use extreme cre tht engine is not ccidentlly strted; keep cler of the re ner propeller. 1. Turn ignition key to RUN position. 2. Loosen trim position sender retining screws. 3. Rotte sender to position indictor needle t bottom of the scle. 4. Retighten retining screws securely. 5. Recheck trim position indictor reding nd turn ignition key to OFF position. b Trim Sender Switch -Retining Screws b-adjustment 71220 Pge 5D-10 90-818177--3 APRIL 2001
SERVICE MANUAL NUMBER 14 Wiring Digrm AUTO TRIM II BLK = BLACK BLU = BLUE BRN = BROWN GRY = GRAY GRN = GREEN ORN = ORANGE PNK = PINK PUR = PURPLE RED = RED TAN = TAN WHT = WHITE YEL = YELLOW LIT = LIGHT DRK = DARK b c e d j i h f g 70023-20 Amp Fuse b- Ground Bolt (Floor Mount) c-up Solenoid d- 110 Amp Fuse e-down Solenoid f-trim Limit Switch g- Ignition Coil h- Control Module i-auto/mnul Switch j-trim Switches (Vrious Styles) 90-818177--3 APRIL 2001 Pge 5D-11
AUTO TRIM II SERVICE MANUAL NUMBER 14 THIS PAGE IS INTENTIONALLY BLANK Pge 5D-12 90-818177--3 APRIL 2001