2008 Arctic Cat 400/500/650/700 ATV Service Manual, Page 176Get this manual
19Rotate the crankshaft until the first cap screw (from step 17) can be addressed; then tighten to 10 ft-lbBend the tab to secure the cap screw
22Remove the cap screw from the end of the chain tensioner; then using flat-blade screwdriver, rotate the adjuster screw inside the tensioner clockwise until the screw bottoms
20Place the C-ring into position in its groove in the cylinder head