Sym ALA125CC Manual page 155

SYM
PISTON RING INSTALLATION
Clean up piston top, ring groove, and piston shirt.
Install the piston ring onto piston carefully.
Place the openings of piston ring as diagram
shown.
Caution
Do not damage piston and piston rings as installation.
All marks on the piston rings must be forwarded to up side.
Make sure that all piston rings can be rotated freely after installed.
Top groove
2nd groove
Oil groove
120°
Over 20 mm
7. CYLINDER/PISTON
Top ring
2nd ring
Side ring
Spacer
Side ring
Oil ring
7-7