kymco mo bw250 Instruction De Maintenance

Inspect the piston, piston pin and piston

rings.

Remove the piston rings.

Clean carbon deposits from the piston ring

grooves.

Install the piston rings onto the piston and

measure the piston ring-to-groove clearance.
Service Limits:

Top: 0.09mm replace if over

2nd: 0.09mm replace if over

Remove the piston rings and insert each

piston ring into the cylinder bottom.

Measure the piston ring end gap.
Service Limit: 0.5mm replace if over

Measure the piston pin hole I.D.
Service Limit: 17.04mm replace if over

• Take care not to damage or break the

piston rings during removal.

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• Use the piston head to push each

piston ring into the cylinder.

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