2011 Arctic Cat 400 TRV ATV Service Manual, Page 122Get this manual
9Remove the cap screws and lock nuts securing the knuckle to the A-armsDiscard the lock nutsNOTE: Never reuse lock nutOnce lock nut has been removed, it must be replaced with new lock nut 7Compress the hand brake lever and engage the brake lever lock; then secure the hub nut (from step 5) to the drive axleTighten to 200 ft-lb8Install new cotter pin and spread the pin to secure the nutNOTE: If the cotter pin does not line up, always tighten to the next alignment
10Remove the cap screws and lock nuts securing the A-arms to the frame; then remove the A-armsNOTE: If removing the upper right A-arm, it will be necessary to disconnect the brake hose from the A-arm
9Secure the shock absorber to the frame with cap screw and new lock nutTighten to 35 ft-lb10Secure the shock absorber to the lower A-arm with cap screw and new lock nutTighten to 20 ft-lb11Secure the boot guard to the lower A-arm with the two cap screwsTighten securely12Install the wheel and tighten to 40 ft-lb13Remove the ATV from the support stand