Mercury 40 4-Stroke - Trim Tab and Trim-In Stop Adjustment

OUTBOARD INSTALLATION
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3. Flo-Torq II Drive Hub Propellers - Install forward thrust hub, propeller, replaceable drive sleeve,
rear thrust hub, propeller nut retainer and propeller nut onto the shaft.
a
b
c
d
e
f
26904
a - Propeller nut
b - Propeller nut retainer
c - Rear thrust hub
d - Replaceable drive sleeve
e - Propeller
f - Forward thrust hub
4. Place propeller nut retainer over pins. Place a block of wood between gearcase and propeller and
tighten propeller nut to specifications.
Description Nm lb. in. lb. ft.
Propeller nut 75 55
5. Align flat sides of the propeller nut with tabs on the propeller nut retainer. Secure propeller nut by
bending tabs up and against the flats on the propeller nut.
a
b
a
b
26906
a - Pins b - Tabs
6. Reinstall spark plug leads.
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.
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