Removing The Cylinder And Piston - Yamaha MIO Service Manual

1
2
2
1
CYLINDER AND PISTON
1
3
EASF0028

REMOVING THE CYLINDER AND PISTON

NOTE:
_
Prior to remove the cylinder and piston,
remove the cylinder head.
1. Remove:
• cylinder 1
2. Remove:
• dowel pins 1
• gasket 2
3. 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. 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.
4 - 33
ENG