5 F 22217
AUTO TRIM AND AUTO TRIM
Table of Contents Page Auto Trim System . . . . . . . . . . . . . . . . . . . . . . . . 5F-1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . 5F-1 Auto Trim Operation . . . . . . . . . . . . . . . . . . . . . . 5F-2 Electrical System Overload Protection . . . . . . 5F-4 Auto Trim Limit Adjustment . . . . . . . . . . . . . . . . 5F-4 Control Module Adjustment . . . . . . . . . . . . . . . . 5F-6 Trim Position Indicator Adjustment . . . . . . . . . . 5F-6
5F-0 - AUTO TRIM AND AUTO TRIM II
Auto Trim System Description NOTE: The only difference between AUTO TRIM and AUTO TRIM Il, is that AUTO TRIM II has an Adjustment Knob on the Control Module. The Auto Trim System consists of the following major components: • Auto Trim Pump – same pump that is used on the standard Power Trim models. • Control Module – a solid-state electronic device that senses engine RPM and regulates the time at which the drive unit trims “In” and “Out” when operating in the “AUTO” mode. Module is protected by a 20-amp fuse.
• Manual Trim Control – will only function with mode switch in the “MANUAL” mode and ignition switch in the “RUN” position. Allows the operator to raise and lower the drive unit for trailering, beaching, launching and shallow water operation. Also, allows the operator to manually adjust the drive unit trim angle while underway in situations where automatic trimming is not desired (rough seas, etc.). • Trim Limit Switch – Establishes the maximum trim “Out” limit in both the “MANUAL” and “AUTO” mode. Prevents drive unit from moving out of the gimbal ring support flanges, which could cause possible damage to stern drive if it were to occur at higher engine speeds.
• Mode Switch – allows the operator to select either “AUTO” or “MANUAL” trim operation from the dash.
POWER TRIM BLK BLU BRN GRY GRN ORN PNK PUR RED TAN WHT YEL LIT DRK
Black Blue Brown Gray Green Orange Pink Purple Red Tan White Yellow Light Dark
AUTO TRIM II SYSTEM WIRING DIAGRAM 90-12934--2 1097
22178 AUTO TRIM AND AUTO TRIM II - 5F-1
Auto Trim Operation The Auto Trim system is designed to allow either automatic or manual trimming of the boat while underway – in addition to allowing drive unit to be raised for trailering, beaching, launching or shallow water operation. A 2-position switch on dashboard allows the operator to select the mode desired.
Boat Running Above Planing Speed
Boat Running Below Planing Speed
Auto Trim Mode Switch “AUTO” MODE OPERATION
! WARNING Drive unit will automatically lower from the raised position when the ignition switch is turned to the “RUN” position and mode switch is placed in the “AUTO” mode. BE SURE THAT NO ONE IS IN THE AREA OF THE DRIVE UNIT. With mode switch in the “AUTO” mode, the drive unit will move automatically to properly trim boat while underway. This allows boat operator to keep both hands on the steering wheel and to direct operator’s full attention to drive the boat.
“MANUAL” MODE OPERATION Placing the mode switch in the “MANUAL” position will deactivate the “AUTO” system and allow the operator to adjust drive unit position, using the manual trim control. Typical controls are shown following. Manual trimming may be desirable to fine tune the trim angle for a particular water condition or boat load, or in situations where greater control over the trim operation is needed. Manual trim control also must be used to raise the drive unit for trailering, beaching, launching and shallow water operation. Ignition switch must be in the “RUN” position for manual trim control to function. 1. RAISING DRIVE UNIT.
• At engine speeds below 3100 RPM, the drive unit will remain in the full “In” position. This will force the bow of the boat down and help it get up on plane quickly. • Once engine reaches 3100 RPM and after a 5-6 second delay (to ensure that boat is up on plane), the drive unit will automatically trim “Out” to a preset position for maximum boat speed and efficiency. Trim “Out” position can be adjusted to fine tune the trim angle for each individual boat. • Upon deceleration, the drive unit will trim “In” when engine reaches 2600 RPM. Most boats will still be up on plane at this point. After drive reaches full “In” position, the trim pump motor will continue to run for approximately 5 seconds.
NOTE: The “AUTO” mode also can be used to lower the drive unit from the fully raised (trailering) position. By placing ignition switch in “RUN” position and mode switch in “AUTO” mode, the drive unit will automatically lower to the full “In” position. Be sure that no one is in the area of the drive unit. 5F-2 - AUTO TRIM AND AUTO TRIM II
a - “Up”/“Out” Button b - “Up” Button
Press Until Drive Unit Reaches Desired Height or End of Upward Travel
Quicksilver 3-Button Trim Control Panel
2. TRIMMING DRIVE UNIT “OUT” (BOW “UP”). Press switch until drive unit moves to properly trim boat or trim limit switch stops outward travel.
Quicksilver “Commander” Panel Trim Control a - “Trailer” Switch – Press Until Drive Unit Reaches Desired Height or End of Upward Travel
NOTE: Some Power Trim pump motors are protected from overheating by an internal circuit breaker. If trailering switch(es) are held depressed after drive unit reaches end of upward travel, internal circuit breaker will open and pump will stop. If this should happen, release switch(es) and allow motor to cool for approximately 2 minutes. Once motor is cool, circuit breaker will reset automatically, and trim operation may be resumed.
Quicksilver 3-Button Trim Control Panel a - “Up”/“0ut” Button – Press
! CAUTION DO NOT run engine above idle RPM with unit raised for shallow water operation, as drive unit is out beyond gimbal ring support flanges and has no side support. USE EXTREME CAUTION WHEN OPERATING BOAT WITH DRIVE UNIT RAISED.
Quicksilver “Commander” Panel Trim Control a - “Trim” Switch – Press Up on Switch
AUTO TRIM AND AUTO TRIM II - 5F-3
! CAUTION NEVER trim the drive unit “Out” using the “Trailer” switch(es) while boat is underway. Severe damage to drive unit may result if the unit is raised beyond the gimbal ring support flanges at engine speeds above idle RPM. 3. TRIMMING DRIVE UNIT “IN” (BOW “DOWN”) – Press switch until drive unit moves to properly trim boat or until drive unit reaches end of downward travel.
Electrical System Overload Protection The Auto Trim electrical system is protected from overload by a 110-amp fuse, and a 20-amp in-line fuse at control module positive (+) battery lead and a 20-amp in-line fuse at ignition switch (if Quicksilver ignition switch is used). If boat is equipped with 3-Button Control Panel, a 20-amp in-line fuse also is located at panel. If Auto Trim electrical system becomes inoperative, check for a blown fuse. If fuse has blown, the cause for overload MUST BE found and corrected BEFORE replacing fuse.
Auto Trim Limit Adjustment In most cases, best all-around performance is obtained with drive unit adjusted so that front of hull will be slightly out of water when boat is on plane.
Boat Properly Trimmed 22174
Quicksilver 3-Button Trim Control Panel a - “In” Button – Press
Adjusting the drive unit “Out” from this position will tend to raise the bow of the boat, thus further reducing the wetted surface of the hull and, in some cases, increasing boat speed. However, if trimmed out excessively, bouncing, porpoising, propeller ventilation and possible difficult steering control could result.
Bow Too High – Move Drive Unit “In”
Quicksilver “Commander” Panel Trim Control a - “Trim” Switch – Press Down on Switch
5F-4 - AUTO TRIM AND AUTO TRIM II
Adjusting the drive unit “In” from normal position will force the bow of the boat down, thus increasing the wetted surface of the hull and, in some cases, improving boat ride in rough water (at partial throttle). However, this will reduce boat speed in most cases.
3. Place Auto Trim mode switch in the “MANUAL” mode; turn ignition key to the “RUN” position.
Bow Too Low – Move Drive Unit “Out” ADJUSTING DRIVE UNIT TRIM ANGLE
! WARNING When adjusting trim limit, following, use extreme care that engine is not accidentally started and keep clear of area near propeller. Also, use care to prevent placing hands in an area where they could be injured by drive unit movement.
! CAUTION Trim limit switch MUST BE adjusted exactly as stated following. If switch is adjusted incorrectly, drive unit may move out beyond the gimbal ring support flanges (when making test run following), and severe damage to stern drive unit may result.
a - Mode Switch – Place in “MANUAL” Mode
4. With the assistance of another person actuate manual trim control switch used to trim drive unit “Out” (DO NOT use “Trailer” switch) and turn trim limit switch SLOWLY counterclockwise until trim cylinders extend to dimension shown. Retighten trim limit switch retaining screws.
If more trim “Out” capability is desired, perform the following. 1. Place drive unit in the full “In”/“Down” position. 50464
2. Turn trim limit switch clockwise to end of slots. a - 21-3/4 in. 1/4 in. (554mm 6mm)
a - Trim Limit Switch b - Retaining Screws – Loosen c - Adjusting Slots 90-12934--2 1097
AUTO TRIM AND AUTO TRIM II - 5F-5
5. Turn ignition key “OFF”. 6. Run boat along a relatively smooth stretch of water and trim boat with manual trim control until optimum boat performance is achieved. 7. After finding trim angle that provides best performance, stop engine (without changing drive unit trim angle). Accurately measure distance between trim cylinder end cap and pivot end. 8. Place drive unit in the full “In” position. Loosen trim limit switch retaining screws and turn switch clock-wise to end of slots.
Control Module Adjustment (Auto Trim Il Only) 1. Turn adjustment knob on control module full counterclockwise. 2. Rotate knob clockwise four clicks (notches). 3. With mode switch in “AUTO” position and the drive unit trimmed full “in”, accelerate boat slowly while watching trim gauge. 4. If boat is on plane well before drive unit begins to trim out (this may happen with lighter, faster boats), rotate adjustment knob counterclockwise one click and accelerate boat slowly. Continue procedure until boat is on plane approximately five or six seconds before trim out occurs. 5. If boat is not on plane before drive unit begins to trim out (this may happen with slower, heavier boats), rotate adjustment knob clockwise one click and accelerate boat slowly.
a - Trim Limit Switch b - Trim Limit Switch Retaining Screws c - Adjusting Slots
9. Leaving Auto trim mode switch in the “MANUAL” mode, turn ignition key to “RUN” position. With the assistance of another person, actuate manual trim control switch used to trim drive unit “Out” and turn trim limit switch slowly counterclockwise until trim cylinders extend to dimension recorded in STEP 7. Tighten switch retaining screws securely. 10. Run boat with Auto Trim mode switch in “AUTO” position at several speeds, through turns under various water and load conditions, If boat does not perform to satisfaction, repeat adjusting procedure.
a - Adjustment Knob
Trim Position Indicator Adjustment With ignition key in the “RUN” position, check Auto Trim indicator to make sure that needle points to bottom of the scale when drive unit is fully “IN”. If needle is not at bottom of scale, perform steps following.
! WARNING Difficulties in handling and operational control may result if drive unit is adjusted “Out” too far. If difficulties are encountered, drive unit trim angle MUST BE moved “In” the amount necessary to eliminate the problem and avoid a possible safety hazard. 22175
a - Needle at Bottom of Scale – Drive Unit in Fully “In” Position 5F-6 - AUTO TRIM AND AUTO TRIM II
! CAUTION While performing this adjustment, use extreme care that engine is not accidentally started and keep clear area near propeller. 1. Turn ignition key to “RUN” position. 2. Loosen trim position sender retaining screws. 3. Rotate sender, as required, to position indicator at bottom of scale. 4. Tighten retaining screws securely. 5. Recheck instrument reading and turn ignition key to “OFF” position.
a - Retaining Screws b - Turn to Adjust
AUTO TRIM AND AUTO TRIM II - 5F-7