1985 Ski-Doo snowmobile Service Manual, Page 413Get this manual
Section 05 SUSPENSION Sub-section 05 (PRS SUSPENSION)
'W' CAUTION: Optional parts are calibrated to operate togetherFailure to follow this recommendation
may affect handling of the vehicle
SPECIFICATIONS
Shock spring specificationsLocation
Part number Number of coils Free length mm.12") Spring rate 1.8 Nmm10lbin) Inside diameter (big end) Wire diameter 0.05 mm.002") Compressed length Color code Spring description 107.7 mm (4.24") Blue-blue 9.19 mm (.362") 131.8 mm (5.19") Green-green
Center (standard)