2001 Arctic Cat ATVs factory service and repair manual, Page 415Get this manual
NOTE: ConditionRemedy marked with an asterisk () is for manual transmission models only
Problem: Engine will not start or is hard to start (Compression too low) Condition 1Valve clearance out of adjustment 2Valve guides worn seated poorly 3Valves mistimed 4Piston rings worn excessively 5Cylinder bore worn 6Spark plug seating poorly 7Starter motor cranks too slowly does not turn Condition 1Spark plug fouled 2Spark plug wet 3Magneto defective 4CDI unit defective 5Ignition coil defective 6High-tension lead open shorted Condition 1Gas tank vent hose obstructed 2Carburetor inlet needle defective 3Fuel hose obstructed 4Fuel screens obstructed Problem: Engine stalls easily Condition 1Spark plug fouled 2Magneto defective 3CDI unit defective 4Carburetor jets obstructed 5Valve clearance out of adjustment Problem: Engine noisy (Excessive valve chatter) Condition 1Valve clearance too large 2Valve spring(s) weak broken 3Rocker arm rocker arm shaft worn 4Camshaft worn Remedy 1Adjust clearance 2Replace spring(s) 3Replace arm shaft 4Replace camshaft Remedy 1Clean plug 2Replace magneto 3Replace CDI unit 4Clean jets 5Adjust clearance Remedy 1Adjust clearance 2Repair replace guides 3Adjust valve timing 4Replace rings 5Replace rebore cylinder 6Tighten plug 7See Electrical in this section Remedy 1Clean replace plug 2Clean dry plug 3Replace magneto 4Replace CDI unit 5Replace ignition coil 6Replace high tension lead Remedy 1Clean vent hose 2Replace needle 3Clean replace hose 4Clean replace inlet screen valve screen