2001 Ski-Doo Factory Shop Manual Volume Three, Page 244Get this manual
Section 07 REAR SUSPENSION Subsection 03 (SC-10 MOUNTAIN SUSPENSION)
Completely push down the shock rod then releaseRod must come out at steady speedIf speed suddenly increases particularly at end of extension, replace shockAll Types of Shock If suspecting frozen shock proceed as follows: Place shock in freezer (temperature below 0C (32F)) for hoursPush down on rod and note its resistanceIf shock is frozen it will be impossible or almost impossible to compress it