KYMCO Downtown 300i ABS Service Manual page 86

7. CYLINDER/PISTON
Measure the connecting rod small end
I.D.
Service Limit: 15.06 mm replace if over
PISTON RING INSTALLATION
Install the piston rings onto the piston.
Apply engine oil to each piston ring.
＊
• Be careful not to damage the piston
and piston rings during assembly.
• All rings should be installed with the
markings facing up.
• After installing the rings, they should
rotate freely without sticking.
• Stagger the ring end gaps as the figure
shown.
Downtown 300i ABS
Top
Second
Side Rail
Oil Ring
Side Rail
Top
Second
7-6