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Mercury 40 FourStroke User Manual

Mercury 40 FourStroke
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GENERAL INFORMATION
Page 1C-14 90-857046R1 NOVEMBER 2001
4-1/4 In. (108mm) Diameter Gear Case
WARNING
If the propeller shaft is rotated while the engine is in gear, there is the possibility that
the engine will crank over and start. To prevent this type of accidental engine start-
ing and possible serious injury caused from being struck by a rotating propeller,
always shift outboard to neutral position and remove spark plug leads when you
are servicing the propeller.
1. Shift outboard to neutral (N) position.
2. Remove the spark plug leads to prevent engine from starting.
a
3. Straighten the bent tabs (a) on the propeller nut retainer.
4. Place a block of wood between gear case and propeller to hold propeller and remove
propeller nut. Pull propeller straight off shaft.
5. Coat the propeller shaft with Anti-Corrosion Grease or 2-4-C Marine Lubricant with
Teflon.
IMPORTANT: To prevent the propeller hub from corroding and seizing to the propeller
shaft, especially in salt water, always apply a coat of the recommended lubricant to
the entire propeller shaft at the recommended maintenance intervals, and also each
time the propeller is removed.
a
b
Flo-Torque I Drive Hub Propellers
Flo-Torque II Drive Hub Propellers
a
b
c
d
e
f
c
d
e
f
6. Flo-Torq I Drive Hub Propellers – Install thrust washer (a), propeller (b), continuity wash-
er (c), thrust hub (d), propeller nut retainer (e), and propeller nut (f) onto the shaft.
7. Flo-Torq II Drive Hub Propellers
– Install forward thrust hub (a), replaceable drive sleeve
(b), propeller (c), thrust hub (d), propeller nut retainer (e) and propeller nut (f) onto the
shaft.
8. Place a block of wood between gear case and propeller and torque propeller nut to 55
lb. ft. (75 N·m).
9. Secure propeller nut by bending three of the tabs into the thrust hub grooves.
10. Reinstall spark plug leads.

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Mercury 40 FourStroke Specifications

General IconGeneral
BrandMercury
Model40 FourStroke
CategoryOutboard Motor
LanguageEnglish

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