1990-1998 Arctic Cat Snowmobiles Repair Manual, Page 396Get this manual
386 Inspection
CHAPTER FOURTEEN
Refer to Figure 221Check the bearings by holding the outer race and spinning the inner race by handIf any roughness or excessive noise is noticed, replace the bearing2Check the bearing seals for damage and replace as necessary3Check the driveshaft (Figure 27) for straightness4Check the driveshaft splines for damage5Visually inspect the sprocket wheels for excessive wear, cracks, distortion or other damageIf necessary, replace drive sprockets and idler wheels on the driveshaft as described in this chapterDrive Sprockets and Idler Wheel Replacement