Mercury MerCruiser Service Manual page 229

4. Insert the bearing shells into the connecting rod and its matching rod cap.
5. Liberally lubricate the connecting rod bearings, pistons, rings, and cylinder walls.
Tube Ref No.
25W-40 Synthetic Blend
4-Stroke Marine Engine
139
Oil
6. Position ring gaps as shown.
e
b
c
b
7. Use the piston ring compressor and compress rings.
90-8M0099748 eng DECEMBER 2015
Description
Connecting rod bearings, pistons, rings, and cylinder walls
Ring gap locations
a
a - Oil ring spacer gap
b - Oil ring gaps
c - Lower compression ring gap
d - Upper compression ring gap
d
e - Front of engine
a
30387
Engine Inspection and Assembly
33361
Where Used
54475
© 2016 Mercury Marine
Part No.
92-8M0078629
Page 3B-27