Adjustments - Evinrude 90 E-TEC Manual

Trim Tab
WARNING
Improper trim tab adjustment can
cause difficult steering.
A propeller will generate steering torque when
the propeller shaft is not running parallel to
the water's surface. The trim tab is adjustable
to compensate for this steering torque.
IMPORTANT: A single trim tab adjustment
will relieve steering effort under only one set
of speed, motor angle and load conditions. No
single adjustment can relieve steering effort
under all speed, motor angle and load condi-
tions. If the boat pulls to the left or right when
its load is evenly distributed, adjust the trim
tab as follows:
With the outboard shut OFF, loosen the trim
tab screw. If the boat pulled to the right, move
the rear of the trim tab slightly to the right. If
the boat pulled to the left, move the rear of the
trim tab slightly to the left.

ADJUSTMENTS

Tighten the trim tab screw to a torque of 35-40
ft. lbs. (47-54 N·m).
Test the boat and, if needed, repeat the pro-
cedure until steering effort is as equal as pos-
sible.
High motor installations — The trim tab
might be above the water when the motor is
trimmed out. Steering effort might increase.
Steering effort will be reduced if you trim the
motor in and submerge the trim tab.
Dual standard rotation motors — Move
both trim tabs equally and in the same direc-
tion.
Dual motors (one counter and one stan-
dard rotation) — Set both trim tabs to the
center position.
A
DJUSTMENTS
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