On-Water Procedure - Mercury BRAVO Service Manual

AUTO TRIM II
6. With the assistance of another person actuate manual trim control switch used to trim
7. Turn ignition key OFF.

ON-WATER PROCEDURE

1. Run boat along a relatively smooth stretch of water and trim boat with manual trim
2. After finding trim angle that provides best performance, stop engine (without changing
3. Place sterndrive unit in the full IN position.
4. Loosen trim limit switch retaining screws.
5. Turn trim limit switch clockwise to end of adjusting slots.
6. Leaving auto trim mode switch in the MANUAL mode, turn ignition key to RUN position.
7. With the assistance of another person, actuate manual trim control switch used to trim
8. Run boat with auto trim mode switch in AUTO position at several speeds, through turns
Difficulties in handling and operational control may result if sterndrive unit is
adjusted OUT too far. If difficulties are encountered, sterndrive unit trim angle
MUST BE moved IN the amount necessary to eliminate the problem and avoid a
possible safety hazard.
Page 5D-8
sterndrive 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.
a - Trim Limit Dimension 21-3/4 in. (552 mm)
control until optimum boat performance is achieved.
sterndrive unit trim angle). Accurately measure distance between trim cylinder end cap
and pivot end.
b
Trim Limit Switch
a - Retaining Screws
b - Adjusting Slots
sterndrive unit OUT and turn trim limit switch SLOWLY counterclockwise until trim cylin-
ders extend to dimension recorded in STEP 2. Tighten switch retaining screws securely.
under various water and load conditions, if boat does not perform to satisfaction, repeat
adjusting procedure.
a
b
a
WARNING
SERVICE MANUAL NUMBER 28
50464
71221
90-863160 MAY 2000