Yamaha YZ Serie Fahrer- Und Wartungshandbuch Seite 246

CYLINDER HEAD, CYLINDER AND PISTON
EC473000
REMOVAL POINTS
EC473210
Push rod
1. Remove:
9Bolt (push rod) 1
9Push rod 2
NOTE:
Set the collar 3 included in owner's tool kit to
remove the bolt (push rod).
EC473401
Piston and piston ring
1. Remove:
9Piston 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:
9Piston pin 1
9Piston 2
9Small end bearing 3
NOTE:
Before removing the piston pin, deburr the clip
groove and pin hole area. If the piston pin
groove is deburred and piston pin is still difficult
to remove, use the piston pin puller 4.
Piston pin puller:
YU-1304/90890-01304
cC
Do not use a hammer to drive the piston
pin out.
3. Remove:
9Piston ring 1
NOTE:
Take care not to scratch the piston and damage
the piston ring.
4-19
ENG