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CYLINDER AND PISTON
REMOVAL POINTS
Piston
1. Remove:
• Piston pin clips 1
• Piston pin 2
• Piston 3
NOTE:
• Before removing the piston pin clip, cover the
crankcase opening with a clean towel or rag
to prevent the clip from falling into the crank-
case cavity.
• Before removing each piston pin, deburr the
clip groove and pin hole area. If the piston
pin groove is deburred and the piston pin is
still difficult to remove, use the piston pin
puller set 4.
Piston pin puller set:
YU-01304/90890-01304
Piston ring
1. Remove:
• Piston rings
NOTE:
Spread the end gaps apart while at the same
time lifting the piston ring over the top of the
piston crown, as shown in the illustration.
INSPECTION
Cylinder and piston
1. Inspect:
• Cylinder and piston walls
Vertical scratches → Replace cylinder
and piston.
4 - 24
ENG
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