Mercury 60 FourStroke EFI Formula Race Manual page 39

FEATURES AND CONTROLS
The most significant control hazard is a pull or torque that is felt on
the steering wheel or tiller handle. This steering torque results from
the outboard 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.
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.
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.
• In rare circumstances, the owner may decide to limit the trim
in. This is accomplished by repositioning the tilt stop pins into
the desired adjustment holes in the transom brackets.
Trimming out or up can:
• Lift the bow higher out of the water
WARNING
!
WARNING
!
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