Engine
Removing the piston
In this manual: Engine
~1min read

1. Remove:
Piston pin clips "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 prevent the piston pin clip from falling into the crankcase.
Before removing the piston pin, deburr the piston pin clip groove and the piston 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".


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.

Test yourself
A quick Yamaha YZF-R125 quiz: every answer comes with an explanation and a link to the manual page.
Was this page helpful?