Mercury 225 Manual page 67

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 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 oversteering) if any turn
is attempted, or if a significant wave is encountered.
Operating the boat at high speeds with the outboard trimmed
too far under can create excessive bow steer, resulting in the
operator losing control of the boat. Install the trim limit pin in a
position that prevents excessive trim under and operate the
boat in a safe manner.
eng
FEATURES AND CONTROLS
WARNING
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WARNING
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