Installing The Piston - Yamaha Rhino 450 YXR45FAV Service Manual

CYLINDER AND PISTON
d. If out of specification, replace the piston.
Piston pin-to-piston clearance
0.004 ~ 0.024 mm
(0.00016 ~ 0.00094 in)
<Limit>: 0.074 mm (0.0029 in)
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INSTALLING THE PISTON

1. Install:
• piston rings
(onto the piston)
NOTE:
• Be sure to install the piston rings so that the
manufacturer's
located on the upper side of the rings.
• Lubricate the piston and piston rings liberally
with engine oil.
2. Position:
• top ring
• 2nd ring
• oil ring
Offset the piston ring end gaps as shown.
a Top ring end
b Oil ring end (upper rail)
c Oil ring end (lower rail)
d 2nd ring end
e 20 mm (0.79 in)
3. Install:
• piston 1
• piston pin 2
• piston pin clips 3
NOTE:
• Apply engine oil onto the piston pin, piston
rings and piston.
• Be sure that the arrow mark a on the piston
points to the exhaust side of the engine.
• Before installing the piston pin clips, cover
the crankcase with a clean rag to prevent
them piston pin clip from falling into the
crankcase.
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