231
POWERHEAD
POWERHEAD ASSEMBLY
11
Lightly coat two new O-rings with Gasket Sealing
Compound, and install on upper crankcase head.
Keep sealer away from oil passage.
Pistons and Connecting Rods
It is very important that the pistons
in this engine are installed in the correct loca-
tion and direction. Engine damage will occur if
installed incorrectly.
New pistons are stamped “PORT” or “STBD,” and
“EXH.” These markings should be turned toward
the exhaust side (center) of the block. The splash
bowl on the dome of the piston will be located
toward the flywheel and opposite the exhaust port.
It is also very important that the
connecting rods are installed with the align-
ment dots and the diagonal oil hole facing up,
toward the flywheel.
Apply outboard lubricant to the wrist pin bearings.
Install the bearings in the wrist pin bore.
Oil the wrist pin bore and wrist pin. Place connect-
ing rod with bearing into the piston with the align-
ment dots facing the top of the piston.
Install wrist pin through piston and connecting rod.
Use Wrist Pin Cone, P/N 331913, and Driver,
P/N 396747, to install new wrist pin retaining rings
1. Oil passage 004131
1. Stamped markings 004305
1. Alignment dots 004306
53628
002057
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