Mercury 6 SERIES

CYLINDER BLOCK AND CRANKCASE
Page 4B–34 90-857138R1 MAY 2000
7. Assemble connecting rod to piston, secure with piston pin and new piston pin clips.
NOTE: Make sure the connecting rod is orientated correctly for reassembling (3H6 mark
must face the oil pan).
NOTE: Reassemble the piston so that the arrow faces the camshaft.
NOTE: 4/5 hp has flat top piston. 6 hp has dome type piston. 6 hp will be marked on top of
piston.
4-Stroke Outboard Oil (92-828000A12)
110
110
3H6
a
b
c
d
e
d
f
4/5 hp 6 hp
a-Connecting Rod (3H6 must Face the Oil
Pan)
b-Piston
c-Piston Pin
d-Piston Pin Clip (2)
e-Direction Arrow (Must Face The Camshaft)
f-Piston Pin Clips Should Bridge the Notch in
the Piston
Piston Ring and Piston Identification Marks
Size Top Piston Ring Second Piston Ring Piston
Standard Size
NOTE: Some early mod-
els may not have these
identification marks
NOTE: 6 hp will have a
6 on top of piston
1N
2N
or
N
UP
UP
6
Oversize
NOTE: Some early mod-
els may not have these
identification marks
1N
50
50
2N
or
N
UP
UP
0.5
0.5