2008 Arctic Cat 366 ATV Service Manual, Page 32Get this manual
Problem: Engine noisy (Noise seems to come from timing chain) Condition 1Chain stretched 2Sprockets worn 3Tension adjuster malfunctioning
1Replace chain 2Replace sprockets 3Repairreplace adjuster
Problem: Engine noisy (Noise seems to come from crankshaft) Condition
1Bearing wornburned 2Lower rod-end bearing wornburned 3Connecting rod side clearance too large
1Replace bearing 2Replace crankshaft 3Replace crankshaft
Problem: Engine noisy (Noise seems to come from transmission) Condition
12345Gears wornrubbing Splines worn Primary gears wornrubbing Bearings worn Bushing worn