Mercury 75 OptiMax Owner's Manual page 60

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NOTE: The manual tilt release valve must be tightened before
operating the outboard to prevent the outboard from tilting up
during reverse operation.
Turn out the manual tilt release valve three turns
counterclockwise. This allows manual tilting of the outboard. Tilt
the outboard to the desired position and tighten the manual tilt
release valve.
SHALLOW WATER OPERATION
When operating your boat in shallow water, you can tilt the
outboard beyond the maximum trim range to prevent hitting
bottom.
1. Reduce engine speed below 2000 RPM.
2. Tilt outboard up. Make sure all the water intake holes stay
submerged at all times.
3. Operate the engine at slow speed only. If engine speed
exceeds 2000 RPM, the outboard will automatically return
down to the maximum trim range.
AUXILIARY TILT SWITCH
The auxiliary tilt switch can be used to tilt the outboard up or
down using the power trim system.
a
FEATURES AND CONTROLS
a -
Auxiliary tilt switch
27779
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50
eng

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