KYMCO Bet & Win 250 Manual page 22

1
. GENERAL INFORMATION
ENGINE NOISE
Cam chain noise
Crankshaft noise
1-21
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Symptom
Valve noise
Piston noise
Gear noise
Bet & Win 250
Probable Cause
ÅValve clearance too large
ÇWorn camshaft lobe
ÅWorn piston rings
ÇWorn piston pin and connecting rod
small end
ÉExcessive carbon build-up in combustion
chamber
ÅDamaged cam chain tensioner
ÇWorn cam gear teeth
ÉWorn or damaged cam chain
ÑExtended cam chain
ÅFaulty crankshaft bearing
ÇWorn crank pin bearing
ÅWorn or damaged final reduction gears
ÇWorn final reduction gear shaft splines