CPI GTR180 Service Manual page 32

CPI MOTOR GTR180
V.CYLINDER & PISTON
PISTON RING INSTALLATION
Clean the piston ring groves thoroughly
Install the piston ring. Space the piston ring end gaps 120
degrees apart.
The gap of the three-piece oil ring should correspond with
the gap of spacer.
PS：
When installing the oil ring, install the spacer first and then
the rails.
NOTE
Avoid piston and piston ring damage during installation.
All ring should be installed with the markings facing up.
After installation, the piston rings should be free to rotate
in the grooves.
Do not mix the top and second rings.
《 5-9 》