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Install a new circlip on one side of the piston
with the end gap facing up or down.
Apply clean engine oil to the piston rings, ring
lands, piston pin bore, piston pin, and piston
skirt. Lubricate the connecting rod (both ends)
and crankshaft main bearing area.
IMPORTANT- Install the piston on the
connecting rod with the “IN” casting mark
facing the intake side of engine. The piston
pin should be a push fit into the piston.
Install the other circlip with the gap facing up or
down. Push the piston pin in both directions to
make sure the clips are properly seated in the
groove.
Place the dowel pins in the crankcase and install
a new cylinder base gasket.
Lubricate the piston and rings with assembly
lube and install a ring compressor on the piston
assembly. Verify that the ring gaps are 120°
degrees apart from each other before
installation.
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