Section 5 - Maintenance
Page 86
90-8M0074347
eng
OCTOBER 2012
Tube Ref No.
Description
Where Used
Part No.
91
Engine Coupler Spline
Grease
Coupler
8M0071842
NOTE:
Alpha Models
‑ Your power package is equipped with a sealed engine coupler and Perm‑a‑Lube U‑joints. The sealed
coupler and shaft splines can be lubricated without removing the sterndrive unit. The Perm‑a‑Lube U‑joints do not require
lubrication.
Driveshaft Extension Models
1. Lubricate the transom end grease fitting and engine end grease fitting by applying approximately 10–12 pumps of grease
from a typical hand‑operated grease gun.
2. Lubricate the driveshaft grease fittings by applying approximately 3–4 pumps of grease from a typical hand‑operated
grease gun.
a -
Driveshaft grease fittings
b -
Transom end grease fitting
c -
Engine end grease fitting
Tube Ref No.
Description
Where Used
Part No.
42
U-Joint and Gimbal
Bearing Grease
Transom end grease fitting, engine end grease fitting,
driveshaft grease fittings
8M0071842
Propellers
Propeller Repair
Some damaged propellers can be repaired. Contact your authorized Mercury MerCruiser dealer.
Alpha Propeller Removal
!
WARNING
Rotating propellers can cause serious injury or death. Never operate the boat out of the water with a propeller installed.
Before installing or removing a propeller, place the drive unit in neutral and engage the lanyard stop switch to prevent the
engine from starting. Place a block of wood between the propeller blade and the anti‑ventilation plate.
1. Place a wood block between the propeller blade and the anti‑ventilation plate to prevent rotation. Straighten bent tabs on
tab washer.
2. Turn the propeller shaft nut counterclockwise to remove the nut.
3. Slide the tab washer, drive sleeve, propeller, and thrust hub off the propeller shaft.
a
b
a
c
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