Choose your country
We work in partnership with many official Kymco dealers around the world.
You can select the country of your choice from the list below, whatever your choice, we can deliver worldwide!
8. CYLINDER/PISTON MXU 250R/300R
Remove the piston pin clip. Piston Towel
Place a clean shop towel in the crankcase
to keep the piston pin clip from falling
into the crankcase.
Press the piston pin out of the piston and
remove the piston.
Clip Piston Pin
INSPECTION
Inspect the piston, piston pin and piston
rings.
Remove the piston rings.
Take care not to damage or break the
piston rings during removal.
Clean carbon deposits from the piston ring
grooves.
Inspect the piston wall for
wear/scratches/damage.
If any defects are found, replace the piston
with a new one.
Install the piston rings onto the piston and
measure the piston ring-to-groove clearance.
Service Limits (replace if over):
Top: 0.09 mm (0.0036 in)
2nd: 0.09 mm (0.0036 in)
8-5