Mercury 350 MAG - Sterndrive U-Joint Shaft Splines and O-Rings; Removed); Engine Coupler; Sterndrive U-Joint Shaft Splines and O-Rings (Sterndrive Unit Removed)

Section 5 - Maintenance
Page 102 90-8M0050539 eng MAY 2011
Sterndrive U‑joint Shaft Splines And O‑rings (Sterndrive Unit Removed)
1. Coat sterndrive U‑joint O‑rings and driveshaft splines with grease.
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.
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. The Perm‑a‑Lube U‑joints do not require
lubrication.
NOTE:
Bravo Models ‑ The coupler and shaft splines can be lubricated without removing the sterndrive unit. Apply lubricant from
a typical hand‑operated grease gun until a small amount of grease begins to push out. The Perm‑a‑Lube U‑joints do not require
lubrication.
b
a
8591
a
6213
a
6212