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ENG
CYLINDER AND PISTON
EAS00253
REMOVING THE PISTON
1. Remove:
•
piston pin clip
1
•
piston pin
2
•
piston
3
CAUTION:
_
Do not use a hammer to drive the piston
pin out.
NOTE:
_
•
Before removing the piston pin clip, cover the
crankcase opening with a clean rag to pre-
vent the piston pin clip from falling into the
crankcase.
•
Before removing the piston pin, deburr the
piston pin clip
’
s groove and the piston
’
s pin
bore area. If both areas are deburred and the
piston pin is still difficult to remove, remove it
with the piston pin puller set
4
.
Piston pin puller set
90890-01304, YU-01304
1
2
3
2. Remove:
•
top ring
•
2nd ring
•
oil ring
NOTE:
_
When removing a piston ring, open the end
gap with your fingers and lift the other side of
the ring over the piston crown.
EAS00255
CHECKING THE CYLINDER AND PISTON
1. Check:
•
piston wall
•
cylinder wall
Vertical scratches
→
Rebore or replace the
cylinder, and replace the piston and piston
rings as a set.
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