MerCruiser 8.1 MAG, Owner'S Manual

Page: 93 / 152

Section 5 - Maintenance
90-864839070 AUGUST 2007 Page 85
Sterndrive U‑joint Shaft Splines And O‑rings (Sterndrive Unit Removed)
1. Coat sterndrive U‑joint O‑rings and driveshaft splines with grease.
b
a
8591
a - Driveshaft splines b - U‑joint O‑rings (3)
Tube Ref No. Description Where Used Part No.
91
Engine Coupler Spline Grease
Driveshaft splines and U-joint
O-rings
92-802869A 1
2. For propeller shaft lubrication, refer to Propellers.
Engine Coupler
1. Lubricate engine coupler splines through grease fittings on coupler by applying
approximately 8‑10 pumps of grease from a typical hand‑operated grease gun.
NOTE: If the boat is operated at idle for prolonged periods of time, coupler should be
lubricated
Bravo Models
‑ every 50 hours;
Alpha Models
‑ every 150 hours.
a
6213
a
6212
Alpha drive coupler Bravo drive coupler
a - Grease fitting
Tube Ref No. Description Where Used Part No.
91
Engine Coupler Spline Grease Coupler 92-802869A 1
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.