2010 Arctic Cat Prowler XT/XTX/XTZ ATV Service Manual, Page 30Get this manual
Troubleshooting Problem: Engine will not start or is hard to start (Compression too low) Condition Remedy 1Adjust clearance 1Valve clearance out of adjustment 2Repairreplace guides 2Valve guides worn 3Retime engine 3Valves mistimed 4Replace rings 4Piston rings wornbroken 5Replacerebore cylinder 5Cylinder bore worn 6See Section 6Starter motor cranks too slowlydoes not turn Problem: Engine will not start or is hard to start (No spark) Condition Remedy 1Spark plug(s) fouled 1Cleanreplace plug(s) 2Spark plug(s) wet 2Cleandry plug(s) 3Magneto defective 3Replace magneto 4ECU defective 4Replace ECU 5Ignition coil defective 5Replace ignition coil 6High-tension lead openshorted 6Replace high tension lead Problem: Engine will not start or is hard to start (No fuel reaching the fuel injector) Condition Remedy 1Gas tank vent hose obstructed 1Clean vent hose 2Fuel hose obstructed 2Cleanreplace hose 3Fuel screens obstructed 3Cleanreplace inlet screenvalve screen 4Fuel pump defective 4Replace fuel pump Problem: Engine stalls easily Condition Remedy 1Cleanreplace plug(s) 1Spark plug(s) fouled 2Replace magneto 2Magneto defective 3Replace ECU 3ECU defective 4Fuel injector obstructed 4Replace fuel injector 5Valve clearance out of adjustment 5Adjust clearance Problem: Engine noisy (Excessive valve chatter) Condition Remedy 1Valve clearance excessive 1Adjust clearance 2Valve spring(s) weakbroken 2Replace spring(s) 3Rocker armrocker arm shaft worn 3Replace armshaft 4Camshaft worn 4Replace camshaft Problem: Engine noisy (Noise seems to come from piston) Condition Remedy 1Pistoncylinder worn 1Replaceservice pistoncylinder 2Combustion chamber carbon buildup 2Clean cylinder head and piston 3Piston pinpiston pin bore worn 3Replaceservice pinbore 4Piston ringsring groove(s) worn 4Replace ringspiston Problem: Engine noisy (Noise seems to come from timing chain) Condition Remedy 1Replace chain 1Chain stretched 2Replace sprockets 2Sprockets worn 3Repairreplace adjuster 3Tension adjuster malfunctioning