2006 Arctic Cat DVX 400 Service Manual, Page 157Get this manual
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 timing chain) Condition Remedy 1Chain stretched 1Replace chain
2Sprockets worn 2Replace sprockets 3Repairreplace adjuster 3Tension adjuster malfunctioning Problem: Engine noisy (Noise seems to come from clutch) Condition Remedy 1Crankshaft splinesbearings worn 1Replace crankshaftbearings 2Countershafthub splines worn 3Clutch plate teeth worn 4Drivendrive clutch plates distortedbroken 2Replace countershafthub 3Replace clutch plate(s) 4Replace clutch plate(s)
5Clutch dampers weak 5Replace dampers Problem: Engine noisy (Noise seems to come from crankshaft) Condition Remedy 1Bearing wornburned 1Replace bearing 2Lower rod-end bearing wornburned 3Connecting rod side clearance too large 2Replace bearing 3Replace thrust washer(s)