2007 Arctic Cat Y-12 90cc ATV Service Manual, Page 107Get this manual

2007 Arctic Cat Y-12 90cc ATV Service Manual, Page 107

EngineTransmission Problem: Engine will not start or is hard to start (Compression too low) Condition Remedy 1Piston rings
inlet needle defective 3Fuel hose obstructed 4Fuel screens obstructed 2Replace needle 3Cleanreplace hose 4Cleanreplace inlet
screenvalve screen Problem: Engine stalls easily Condition 1Spark plug fouled 2Magneto defective 3CDI unit defective 4Carburetor
jets obstructed Remedy 1Clean plug 2Replace magneto 3Replace CDI unit 4Clean jets Problem: Engine noisy (Noise seems to come
from piston) Condition Remedy 1Pistoncylinder worn 1Replaceservice pistoncylinder 2Combustion chamber carbon buildup 3Piston
pinpiston pin bore worn 4Piston ringsring groove(s) worn 2Clean chamber 3Replaceservice pinbore 4Replace ringspiston Problem:
Engine noisy (Noise seems to come from clutch) Condition Remedy 1Clutch shoe(s) worn 1Replace clutch shoe(s) 2Driven clutch
hub warpedworn 2Replace clutch Problem: Engine noisy (Noise seems to come from crankshaft) Condition Remedy 1Bearing wornburned