Trim Tab Adjustment - Mercury 40 FourStroke Maintenance And Installation Manual

FEATURES AND CONTROLS
NOTE: To maintain proper adjustment, the locknut located on top of the
steering friction lever pivot shaft can be tightened.
a
c
Insufficient friction adjustment can cause serious injury or death due to loss
of boat control. When setting the friction adjustment, maintain sufficient
steering friction to prevent the outboard from steering into a full turn if the
tiller handle is released.

Trim Tab Adjustment

Propeller steering torque will cause your boat to pull in one direction. This
steering torque is a normal result from your outboard not trimmed with the
propeller shaft parallel to the water surface. The trim tab can help to
compensate for this steering torque in many cases and can be adjusted within
limits to reduce any unequal steering effort.
NOTE: Trim tab adjustment will have little effect reducing steering torque if the
outboard is installed with the anti‑ventilation plate approximately 50 mm (2 in.)
or more above the boat bottom.
MODELS WITHOUT POWER TRIM
Operate your boat at normal cruising speed trimmed to desired position by
installing the tilt pin in the desired tilt pin hole. Turn your boat left and right and
note the direction the boat turns more easily.
eng
a - Tighten friction
b - Loosen friction
c - Locknut
b
26811
WARNING
!
26816
33