ENGINE 3-93
• Position the gaps of the three rings as shown. Before inserting
each piston into the cylinder, check that the gaps are so
located.
• Apply a light coat of molybdenum oil solution to the piston pin.
) MOLYBDENUM OIL
NOTE:
When installing the pistons, front and rear, the indents
A on the
piston heads must be located to each exhaust side.
• Place a clean rag over the cylinder base so as not to drop the
piston pin circlips into the crankcase.
• Install the pistons, front and rear.
• Install the piston pin circlips.
#
#
NOTE:
End gap of the circlip should not be aligned with the cutaway in
the piston pin bore.
EX
IN
• 2nd ring
• Lower side
rail
• Upper side
rail
• Top ring
• Spacer
120˚
120˚
120˚
EX
IN
Use new piston pin circlips to prevent circlip failure
which will occur with a bend one.
When turning the crankshaft, pull the cam chains
upward, or the chains will be caught between the
crankcase and the cam drive sprocket.
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