2004 650 Twin Arctic Cat ATV Service Manual, Page 194Get this manual

2004 650 Twin Arctic Cat ATV Service Manual, Page 194

Engine Problem: Engine will not start or is hard to start (Compression too low) Condition Remedy 1Valve clearance out of
lead 6High-tension lead openshorted Problem: Engine will not start or is hard to start (No fuel reaching the carburetor)
Condition Remedy 1Gas tank vent hose obstructed 1Clean vent hose 2Carburetor inlet needle defective 2Replace needle 3Fuel
hose obstructed 3Cleanreplace hose 4Cleanreplace inlet screenvalve screen 4Fuel screens obstructed 5Cleanreplace valve 5Gas
tank valve clogged or defective 6Replace pump 6Electric fuel pump defective Problem: Engine stalls easily Condition Remedy
1Spark plug fouled 1Clean plug 2Magneto defective 2Replace magneto 3CDI unit defective 3Replace CDI unit 4Carburetor jets
obstructed 4Clean jets 5Valve clearance out of adjustment 5Adjust clearance Problem: Engine noisy (Excessive valve chatter)