Mercury 40 Service Manual page 47

Trim Tab Adjustment
The trim tab can be adjusted within limits to help to
compensate for steering torque.
Adjust trim tab as follows:
1. If boat tends to pull to the right, move the rear
edge of the trim tab to the right.
2. If boat tends to pull to the left, move the rear edge
of the trim tab to the left.
a
a - Trim Tab
NOTE: Trim tab adjustment will have little effect re-
ducing steering torque if the the anti-ventilation plate
is raised 2 inches (50.8 mm) or more above the boat
bottom.
90-852572R1 JANUARY 1998 IMPORTANT INFORMATION - 1D-11