2007 Arctic Cat Four-Stroke Factory Service Manual, Page 316Get this manual
! NOTE: If the driven pulley is tight on the driven shaft, pull the driven pulley off using the Driven Pulley Puller (pn 0744-023) ALoosen the cap screws and nuts securing the engine mounting brackets to the front endBUsing the jam nut on the torque bumper, adjust parallelism and periodically check the parallelismWhen the parallelism is correct, tighten the cap screws and nuts securing the engine mounting brackets to the front end; then tighten the torque bumper jam nut allowing 1.5 mm (0.060 in clearance between the torque bumper and the engine
2To move the driven pulley inward on the shaft, remove washer(s) as required from behind the pulley3To move the driven pulley outward on the shaft, add alignment washer(s) as required behind the driven pulley! NOTE: Make sure the keyways match when installing the driven pulleyArrange washers to allow the least amount of "float" on the driven shaftA maximum of 1.5 mm (0.060 in of float is acceptable
4Install the driven pulley and secure with cap screw and washersTighten the cap screw to specificationsCHECKING PARALLELISM