2008 Arctic Cat 400/500/650/700 ATV Service Manual, Page 24Get this manual
(400500 Manual Transmission) To adjust the clutch, use the following procedure1Using an impact driver, remove the screws securing the cover and remove the coverAccount for the O-ring
Adjusting Clutch
4Rotate adjustment screw #2 alternately clockwise and counterclockwise to ensure free movement without binding; then lock the jam nut securing adjustment screw #25Rotate adjustment screw #1 clockwise 18 turn; then lock the jam nut securing adjustment screw #1NOTE: At this point the clutch should be adjusted correctlyTest to ensure accurate adjustment
6Install the cover making sure the O-ring is properly positioned; then secure with the screws
TIRE SIZES The ATV is equipped with low-pressure tubeless tires of the size and type listed (see Section 1)Do not under any circumstances substitute tires of different type or size
2Loosen the jam nuts securing adjustment screw #1 (forward) and adjustment screw #2 (rearward)