KYMCO XCITING S 400 Manual page 126

XCITING 400i
3. Engine > Cylinders and Pistons
Remove the piston pin and the piston.
Clean off the cylinder mating surface, but take care to keep debris from
falling into the crankcase.
Spread the piston rings and lift them off opposite the gap.
Spread the rings the minimum amount during removal. The
rings can be easily damaged.
3‐48