2006 Arctic Cat Y-6/Y-12 50cc and 90cc Service Manual, Page 94Get this manual
7Remove the long cap screw and self-locking nut securing the front of the swing arm to the frame brackets; then remove the swing arm from the frameAccount for two seals, spacer, rubber swing arm guard, and washer 3Lubricate the two seals with light coat of grease; then install them on the ends of the swing arm4Position the swing arm in the frame and slide the long cap screw through the brackets and swing arm
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5Install the washer and self-locking nutTighten the nut to specifications6Install the axle, spacers, hubs, and drive chain (see Rear HubDrive Axle in Section 6)7Secure the shock absorber to the swing arm with the cap screwTighten the cap screw to specificationsMD2312
CLEANING AND INSPECTING
NOTE: Whenever part is worn excessively, cracked, or damaged in any way, replacement is necessary