2008 Arctic Cat ATVs factory service and repair manual, Page 367Get this manual
Troubleshooting
condition 1Ignition coil defective 2Spark plug defective 3Magneto defective 4CDI uniVECU defective 5Pick-up coil defective condition 1Mixture too rich 2Idling RPM too high 3Gasoline incorrect 4Air cleaner element dirty 5Spark plug incorrect (too cold) 6Valve seals crackedmissing 7Oil rings wornbroken condition 1Spark plug incorrect (too hot) 2Engine overheats 3Spark plug loose 4Mixture too lean condition 1Lead wireslconnections shortedlooseopen 2Magneto coils shortedgroundedopen 3Reaulatorlrectifier defective