Engine Coupler / U-Joint Shaft Splines - Mercury MerCruiser MCM 4.3L ALPHA Service Manual

SERVICE MANUAL NUMBER 25

Engine Coupler / U-Joint Shaft Splines

NOTE: Engine coupler and shaft splines are greased with Quicksilver Engine Coupler
Spline Grease, 92-816391A4; universal joints are greased with Quicksilver 2-4-C Marine
Lubricant.
NOTE: Refer to Mercury MerCruiser Sterndrive Service Manual for sterndrive unit removal
and installation, if necessary.
IMPORTANT: Sterndrive Unit does not have to be removed to grease coupler.
1. Lubricate engine coupler splines through grease fitting on coupler by applying approxi-
mately 8-10 pumps of grease from a typical hand-operated grease gun.
Typical Alpha Drive Coupler
IMPORTANT: Later Bravo Models may be equipped with a coupler that is similar to
the Alpha Coupler.
Typical Bravo Drive
Index
90-861328--1 NOVEMBER 1999
b
a
a - Grease Fitting
b - Quicksilver Engine Coupler Spline Grease
a
a
a
a - Quicksilver Engine Coupler Spline Grease
71569
Typical Bravo Drive Coupler
MAINTENANCE
b
a
72529
72531
Page 1B-21