1985 Ski-Doo snowmobile Service Manual, Page 412Get this manual
Section 05 SUSPENSION Sub-section 05 (PRS SUSPENSION)
Pay attention to the following conditions that will denote faulty shockskip or hang back when reversing stroke at mid travel- Seizing or binding condition except at extreme end of either strokeOil leakagegurgling noise, after completing one full compression and extension strokeRenew if any faults are presentHighest elevation (stlflestl-:.6.015005015
Lowest elevation (soltestl
REAR SUSPENSION ADJUSTMENT
CAUTION: Shock absorbers must be removed to adjust the preload
Center spring
When the center spring ring is at the lowest elevation more weight is distributed on the skisAt the highest position the weight is transferred from the skis to the track Depending the snow condition these positions are recommended:
43,82, Adjuster ring
The rear suspension has preload adlustments:The center shock spring for surface conditionThe rear shock spring (twin shocks) for driver's weight