3-43
ENG
PISTON, CONNECTING ROD, CRANKSHAFT AND
CRANKCASE
PISTON RING AND PISTON ASSEMBLY
1. Install:
• Top ring
1
• 2nd ring
2
• Oil ring
3
NOTE:
• Be sure to install the second ring so that the
manufactures mark
a
faces towards the
piston head.
• Make sure that the piston rings move
smoothly.
2. Apply 4-stroke engine oil to the inside of
the connecting rod small end.
SVW3770
3. Install:
• Piston
1
• Piston pin
2
• Piston pin circlip
3
NOTE:
• Make sure that the “YAMAHA” mark
a
on
the connecting rod faces toward the crank-
case cover.
• Make sure that the “
” mark
b
on the pis-
ton head faces toward the push rod.
SVU3720J
New