2006-2009 Suzuki LT-Z50 QuadSport ATV Factory Service Manual, Page 180Get this manual
SERVICING INFORMATION
NOISY ENGINE Symptom, possible causes and remedy 1) Excessive valve chatter Too large valve clearance Weakened or broken valve springs Worn rocker arm or cam surface2) Noise seems to come from piston Worn down piston or cylinder Combustion chamber fouled with carbon Worn piston pin or piston pin bore Worn piston rings or ring grooves3) Noise seems to come from clutch Weak clutch shoe spring4) Noise seems to come from crankshaft Rattling bearings due to wear Worn and burnt journal bearings Too large thrust clearance5) Noise seems to come from the movable drive and driven face Worn or slipping drive belt Worn rollers in movable drive faceCLUTCH SLIPS Symptom, possible causes and remedy Worn or damaged clutch shoe Worn clutch housingENGINE IDLES POORLY Symptom, possible causes and remedy Valve clearance out of adjustment Poor seating of valves Defective valve guides Worn down camshaft Worn cylinder Worn piston rings Stiff piston rings Excessive spark plug gap Defective CDI unit Defective ignition coil Defective generator coil Incorrect float chamber fuel level Clogged carburetor jet