Auto Mode Operation; Boat Running Above Planing Speed - Diagram; Boat Running Below Planing Speed - Diagram - Mercury BRAVO Service Manual

SERVICE MANUAL NUMBER 28

Auto Mode Operation

Sterndrive 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 STERNDRIVE UNIT.
With mode switch in the AUTO mode, the sterndrive unit will move automatically to properly
trim the boat while underway. This allows boat operator to keep both hands on the steering
wheel and to direct operator's full attention to driving the boat.
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NOTE: The AUTO mode also can be used to lower the sterndrive unit from the fully raised
(trailering) position. By placing ignition switch in RUN position and mode switch in AUTO
mode, the sterndrive unit will automatically lower to the full IN position. Be sure that no one
is in the area of the sterndrive unit.
90-863160 MAY 2000
At engine speeds below 3100 rpm, the sterndrive 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 sterndrive 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 sterndrive unit will trim IN when engine reaches 2600 rpm. Most
boats will still be up on plane at this point. After sterndrive reaches full IN position, the
trim pump motor will continue to run for approximately 5 seconds.
Boat Running Above Planing Speed
Boat Running Below Planing Speed
WARNING
AUTO TRIM II
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