1985 Ski-Doo snowmobile Service Manual, Page 401Get this manual
Section 05 SUSPENSION Sub-section 03 (TRS SUSPENSION)
RIDE ADJUSTMENT
The front adjustment cams are used for snow condition, and the rear for driver's weightThe front adjustment cams should be positioned at the highest elevation for deep snow conditionsAt lower elevation IS preferred when negociating icy snowThe rear adjuster blocks should be adjusted to rider preference(TYPICAL)