1978 Ski-Doo Shop Manual, Page 16Get this manual
SECTION 01 SUB-SECTION 02 (SLIDE SUSPENSION)
ADJUSTMENT
Track tension
Lift rear of vehicle and support it off the groundAllow track to extend normallyThere must be gap of 13 mm (12") between slider shoe and bottom inside of track, on each sidea a
ITrack alignment
IAft er track tension has been corrected, start the engine
and accelerate slightly so that track turns slowlyCheck that track is well centered and turns evenlyTo correct stop the engine then loosen the lock nuts and tighten the adjuster bolt on side where track is closest to the frameTighten lock nut and recheck alignmentWARNING: Before checking track alignment, ensure that the track is free of all particles which could be thrown out while track is rotatingKeep hands, feet, tools and clothing clear of track