Trim Tab Adjustment - Mercury 75 OptiMax Owner's Manual

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FEATURES AND CONTROLS

Trim Tab Adjustment

Propeller steering torque will cause your boat to pull in one
direction. This steering torque is a normal thing that results from
your outboard not being trimmed so the propeller shaft is parallel
to the water surface. The trim tab can help compensate for this
steering torque in many cases and can be adjusted within limits
to reduce any unequal steering effort.
26816
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 inches) or more above the boat
bottom.
Operate your boat at normal cruising speed, trimmed to the
desired position. Turn your boat left and right and note the
direction the boat turns more easily.
If adjustment is necessary, loosen trim tab bolt and make small
adjustments at a time. If the boat turns more easily to the left,
move the trailing edge of trim tab to the left. If the boat turns
more easily to the right, move the trailing edge of trim tab to the
right. Retighten bolt and retest.
51
eng

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