Honda BF75D Owner's Manual page 103

Installation
1. Apply marine grade grease to the
propeller shaft.
2. Install the thrust washer with the
grooved side toward the gear case.
3. Install the propeller.
4. Install the 18.5 mm washer.
5. Lightly tighten the castle nut by
hand or wrench until the propeller
has no free play.
6. Tighten the castle nut using a
torque wrench. 
CASTLE NUT TIGHTENING
TORQUE: 
0.7 lbf·ft (1 N·m, 0.1 kgf·m)
7. Then, using a torque wrench,
tighten the castle nut until the first
available groove in the castle nut
aligns with the cotter pin hole. Do
not tighten past the first alignment
of the castle nut groove and the
cotter pin hole.
SERVICING YOUR OUTBOARD MOTOR
TIGHTENING TORQUE LIMIT:
33 lbf·ft (44.1 N·m, 4.5 kgf·m) 
Do not tighten the castle nut above
the TIGHTENING TORQUE LIMIT,
or the propeller and shaft may be
damaged.
MARINE GREASE
THRUST WASHER
8. Be sure to replace the cotter pin
with a new one.

• Use a Honda Genuine stainless
steel cotter pin or equivalent
cotter pin and bend the pin ends
as shown.
Note that these wrenches are not
included with the tool set that comes
with the outboard motor. Contact
your authorized Honda Marine dealer
for additional tool information.
PROPELLER (optional equipment)
18.5 mm
WASHER
COTTER PIN
CASTLE NUT
COTTER PIN
101