1986 Ski-Doo Factory Shop Manual, Page 422Get this manual
Section 05 SUSPENSION Sub-section 03 (TRS SUSPENSION)
26, Adjustment cams
PosItion the adjustment cams (front and rear) at the lowest position
lowest position lift and pull outward
AOO100504
67 Rear springs
left hand sode
Lowest position
Unhook rear springs
33,56 Screwsrear arm
Remove both screws securing rear arm to framePlug vent holes in chaincase filler cap and oil Injection reservoir cap with wire to prevent leaksUSing appropriate equipment, lift rear of vehicle;