Yamaha MX-800, Service Manual, Page: 93 / 188

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ENGINE
PISTONS, CAMSHAFT, CRANKCASE, AND CRANKSHAFT
rings and related components.
1.
Install:
• Top ring “1”
• 2nd ring “2”
• Oil ring “3”
TIP
• Be sure to install the top ring so that the “R” mark “a”
faces toward the piston head.
• Be sure to install the 2nd ring so that the “RN” mark “b”
faces toward the piston head.
• Make sure that the piston rings move smoothly.
2.
Apply the engine oil to the inside of the connecting rod
small end.
3.
Install:
• Piston “1”
• Piston pin “2”
• Piston pin circlips “3”
TIP
• Make sure that the “ ” mark “a” on the piston head
faces toward the flywheel.
• Install the piston pin clips so that the clip ends are 45

“b” or more from the cutout in the piston.
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1
a
b
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a
#1 #2
1 3
2
b
New