1989 Ski-Doo Repair Manual, Page 466Get this manual
Section 05 SUSPENSION Sub-section 06 (MONOSHOCK PRS SUSPENSION)
NOTE: Before attempting to compress the shock spring, push the rubber bumper on the piston shaft against the shock body and place the adjuster ring at its lowest positionSpring stopper Bumper against shock body
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Install the shock spring remover over the springInsert clevis pin through the shock eye and secure it with the hair pinTighten the bolt until the spring stopper can be removed
CAUTION: Do not clamp directly on shock body
Examine each shock for leaksExtend and compress the piston several times over its entire stroke checking that it moves smoothly and with uniform resistancePay attention to the following conditions that will denote faulty shock:skip or hang back when reversing stroke at mid travel- Seizing or binding condition except at extreme end of either strokeOil leakage- gurgling noise, after completing one full compression and extension strokeRenew if any fault is present