Mercury 250 XS OptiMax Operation, Maintenance & Installation Manual page 72

IMPORTANT: To prevent the propeller hub from corroding and seizing to the
propeller shaft, especially in salt water, always apply a coat of Extreme Grease
to the entire propeller shaft at the recommended maintenance intervals and
also each time the propeller is removed.
1. Lubricate the propeller shaft splines with Extreme Grease.
2. Install the propeller hub assembly, propeller, washer, Belleville washer,
washer, and propeller nut onto the propeller shaft.
Tube Ref
Description
No.
Extreme Grease
3. Place a block of wood between the gearcase and propeller and torque the
propeller nut.
Description
Propeller nut
4. Disengage the safety stop switch by placing it in the RUN position and
return the keys to the ignition switch.
MAINTENANCE
a
b
Propeller shaft splines
a -
e
d
b -
c -
d -
e -
f -
c
f
2693
Where Used
2691
Nm
75
62
Propeller hub
assembly
Propeller
Washer
Belleville washer
Washer
Propeller nut
Part No.
8M0071842
lb‑in. lb‑ft
– 55
eng