1989 Ski-Doo Repair Manual, Page 455Get this manual
Section 05 SUSPENSION Sub-section 05 (PRS SUSPENSION)
The choice of different cam position on rear springs and spring itself depends on operator's weight, riding speed and terrain conditionsWith rider sitting on the vehicle, the suspension should collapse by 38 mm (1-12 in)Adjust as necessaryOperator's weight Light Riding speed Low Field condition Flat Spring rate 28 Nlmm (160 Ibflinl Cam position 3
Highest elevation ""';"=' (stiffDsti A01S 005 015
3b Nlmm (200 Ibfl ini
Front shock absorber spring
When the front 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 trackDepending the snow condition these positions are recommendod: SNOW CONDITION Deep snow or hill climbing Hard surface CAM POSITION 1-2-3 4-5
A slight bottoming of the suspenpsion during severe riding conditions indicates good choice of spring rate and preload