Mercury 135 Verado Manual page 91

FEATURES AND CONTROLS
POWER TRIM OPERATION
With most boats, operating around the middle of the trim range will
give satisfactory results. However, to take full advantage of the
trimming capability there may be times when you choose to trim
your outboard all the way in or out. Along with an improvement in
some performance aspects comes a greater responsibility for the
operator, and this is being aware of some potential control hazards.
The most significant control hazard is a pull or torque that can be
felt on the steering wheel or tiller handle. This steering torque
results from the outboard being trimmed so that the propeller shaft
is not parallel to the water surface.
Trimming the outboard beyond a neutral steering condition may
result in a pull on the steering wheel or tiller handle and loss of
boat control. Maintain control of the boat if trimming beyond a
neutral steering condition.
Consider the following lists carefully.
1. Trimming In or Down Can:
• Lower the bow.
• Result in quicker planing off, especially with a heavy load
or a stern heavy boat.
• Generally improve the ride in choppy water.
• Increase steering torque or pull to the right (with the normal
right hand rotation propeller).
• In excess, can lower the bow of some boats to a point
where they begin to plow with their bow in the water while
on plane. This can result in an unexpected turn in either
direction (called bow steering or over‑steering) if any turn
is attempted, or if a significant wave is encountered.
WARNING
!
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