2003 Ski-Doo ZX Series Factory Shop Manual, Page 309Get this manual
Section 07 REAR SUSPENSION Subsection 02 (SC-10 SUSPENSION)
All Models Remove the front idler wheels to gain access to the axle retaining self-locking screws no6Follow the instructions provided in this section to unfasten these screwsSlide out the axle and remove the shock
SUSPENSION ASSEMBLY REMOVAL
Decrease spring preload by turning cams accordinglyLift rear of vehicle and support it off the groundLoosen track tensionRemove rear arm top axle screws no7 from chassis
2, Rear Spring
All Models Remove spring ends from adjusting camsUnbolt rear arm top axle from chassisAll Liquid Cooled Models Unscrew set screws from locking ring at each end of top axleRemove spacers and top idler wheelsRemove springs
6,7, Self-Locking Screws