2004 Skidoo ZX Series Service Manual, Page 502Get this manual
Section 10 REAR SUSPENSION Subsection 02 (SC-10 III SUSPENSION)
A32F1SA
1Larger diameter
All Shock Types NOTE: Carefully inspect damper for gas or oil leaksAny leaks must be corrected before continuingDamper gas pressure cannot be confirmed by using pressure gaugeThe volume of gas in the shock is very small, and the amount lost during gauge installation will lower the pressure too much and require refillingAfter recharging is complete the rebuilt shock should be bench-testedStroke the shock to ensure full travel and smooth compression and rebound actionIf the shaft moves in or out erratically this could indicate too much air is trapped insideIf the shaft will not move or has partial travel then it may be hydraulically lockedIn either event the shock must be rebuilt againPay particular attention to the placement of the IFP, quantity of oil and shim stackpiston assembly