1985 Ski-Doo snowmobile Service Manual, Page 392Get this manual

1985 Ski-Doo snowmobile Service Manual, Page 392

Quality of the image is intentionally reduced!

Section 05 SUSPENSION Sub-section 02 (SLIDE SUSPENSION)
This ridge outside

47, Rear idler wheels
Unscrew adjustment screws as far as possible to push the rear axle forward