Yamaha TZ125M1 Owner's Service Manual page 107

CYLINDER HEAD, CYLINDER AND PISTON
EC473000
REMOVAL POINTS
EC473400
Piston and piston ring
1. Remove:
• Piston pin clip 1
NOTE:
Before removing the piston pin clip, cover the
crankcase with a clean rag to prevent the pis-
ton pin clip from falling into the crankcase cav-
ity.
2. Remove:
• Piston pin 1
• Piston 2
• Small end bearing 3
NOTE:
Before removing the piston pin, deburr the clip
groove and pin hole area. If the piston pin
A
groove is deburred and piston pin is still difficult
to remove, use the piston pin puller 4.
Piston pin puller:
YU-01304/90890-01304
CAUTION:
C C
Do not use a hammer to drive the piston pin
out.
3. Remove:
• Piston ring 1
NOTE:
Take care not to scratch the piston and dam-
age the piston ring.
EC474000
INSPECTION
EC474110
Cylinder head
1. Remove:
• Carbon deposits
Use #400~600 grit wet sandpaper.
4-19
ENG