2010 Arctic Cat DVX 90 / 90 Utility ATV Service Manual, Page 70Get this manual
2Remove the cotter pins from the axle shaft and discard; then apply the rear brake and remove the castle nuts from the axleAccount for the flat washer MD1854
REMOVING FRONT DRIVE SPROCKET 1With the chain installed and with the rear brake applied, remove the two cap screws securing the spline-lock to the drive sprocketYT175A
3Remove the left and right rear wheels4Remove the two axle nuts securing the brake hub to the axle; then remove three cap screws securing the rear sprocket to the sprocket retainer
2Loosen the drive chain (see Adjusting Drive Chain in this sub-section)3Remove the drive sprocket and chain; then remove the sprocket from the chainINSTALLING FRONT DRIVE SPROCKET 1Place the drive sprocket into the drive chain; then slide onto the driveshaft2Install the spline-lock and two cap screws3Adjust the drive chain (see Adjusting Drive Chain in this sub-section)4With the rear brake lever lock applied, tighten the cap screws to ft-lbREMOVING REAR SPROCKET 1Secure the ATV on support stand to elevate the rear wheelsYT195A