1989 Ski-Doo Repair Manual, Page 428Get this manual
Section 05 SUSPENSION Sub-section 02 (SLIDE SUSPENSION)
39, Stopper strap
The function of the suspension stopper strap is to control the transfer of vehicle weight during accelerationThe longer the belt, the more the weight will be transferred to the track to provide better tractionThe shorter the belt, the lesser the weight transferred to the track, thus maintaining more positive directionAdjusting holes on the stopper strap allow to adjust it according to drivers' requirements, field andor snow conditionsFor nornlal use locate bolt through nd hole from strap end+