2008 Arctic Cat 400/500/650/700 ATV Service Manual, Page 318Get this manual
3Install the front through-bolt; then install the rear through-boltSecure with new self-locking nuts and tighten to 40 ft-lb4Align the rear drive flanges and secure with four cap screwsTighten to 20 ft-lbNOTE: It is advisable to apply the brake lever lock when tightening the cap screws securing the rear driveshaftFI112
7Using new O-ring, install the intake pipe on the cylinder head making sure the UP mark is directed toward the top of the engine; then secure with the two cap screws and tighten securely