2006 Arctic Cat DVX 400 Service Manual, Page 121Get this manual
4Remove the rear shock absorber by lifting up the swing-arm and lowering the shock absorber assembly SP326
3Remove the rear arm lower nut and cap screw (3); then remove the shock absorber nuts and cap screws (4-5)CLEANING AND INSPECTING
1Clean the shock absorber in parts-cleaning solvent2Inspect each shock absorber body and rubber bushing for damage and leaking oilIf any defects are found, replace the shock absorber
! WARNING
Do not attempt to disassemble the rear shock absorberIt contains high-pressure nitrogen gas and is not serviceable