2006 Arctic Cat Y-6/Y-12 50cc and 90cc Service Manual, Page 35Get this manual

2006 Arctic Cat Y-6/Y-12 50cc and 90cc Service Manual, Page 35

39Remove the Allen-head cap screw securing the chain guide; then remove the chain guideInspect the O-ring on the screw for damage DSC02156

38Remove the cam chain from the crankshaft sprocket; then remove the crankshaft from the left-side crankcase half
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! CAUTION
Remove the crankshaft carefully making sure the chain is free of the sprocketIf force is used, damage to the crankshaft sprocket, cam chain, or left-side crankcase half could occur