2007 Arctic Cat Four-Stroke Factory Service Manual, Page 337Get this manual
8Remove the rear cap screws securing the skid frame to the tunnelAccount for lock washers and flat washers9Slide the skid frame rearward far enough to drop the front arm out of the slider axle; then remove the skid frame10Tip the snowmobile onto the right side positioning the gear case side of the snowmobile upPlace piece of cardboard under the side of the snowmobile to protect against scratchingRemove the skid frame11Using 916-insocket and extension, remove the cap screw securing the driven pulley to the input shaft ZJ210A
5Loosen but do not remove the 16 mm cap screw (from the brake disc side of the inner driveshaft) securing the driveshaft to the gear case
742-020A
! NOTE: For gear case removing purposes at this time, do not remove the 16 mm cap screw
12Slide the driven pully off the shaft! NOTE: After removing the driven pulley, account for the cap screw and washers, sheave adjuster, alignment washers, and O-ring from outside the pulley; then from the input shaft, remove the two 1.5 mm (0.060 in washers along with any other alignment washersThese washers must be used during installing