Installing The Piston And Cylinder - Yamaha YJ50RAP Service Manual

CYLINDER HEAD, CYLINDER AND PISTON
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INSTALLING THE PISTON AND CYLINDER

1. Install:
• top ring 1
• 2nd ring 2
NOTE:
@
• Be sure to install the piston rings so that the
manufacturer's marks or numbers face up.
• Before installing the cylinder, align the piston
ring end gaps to the respective knock pins as
shown.
2. Install:
• bearing
• piston 1
• piston pin 2
• piston pin clip 3
NOTE:
@
• Lubricate the piston pin with engine oil.
• Make sure the arrow mark a on the piston
points towards the exhaust side of the cylin-
der.
• Before installing the piston pin clip, cover the
crankcase opening with a clean rag to pre-
vent the clip from falling into the crankcase.
ENG
New