2006 Arctic Cat Y-6/Y-12 50cc and 90cc Service Manual, Page 80Get this manual
2Tighten the adjuster nut (B) on the adjusting bolt until approximately 30 mm (1.18 in of slack is present at mid-span of the chain MD2072
Drive ChainSprockets
3Tighten the four cap screwsCHECKING DRIVE CHAIN AND SPROCKETS REMOVING DRIVE CHAIN
1Remove the drive chain master link clip
The following drive system components should be inspected periodically to ensure proper operationAChain (excessive stretch or slack)BSprockets (excessive wearhooking, missing or broken teeth)ADJUSTING DRIVE CHAIN