1979 Ski-Doo Supplementary Shop Manual, Page 18Get this manual
SECTION 02 SUB-SECTION 02 (DRIVE BELT)
TROUBLE SHOOTING
1Uneven belt wear on one side onlyCAUSE a) Loose engine mountb) Pulley misa lignmentc) Rough or scratched pulley surfaces
a) Tighten engine mount nuts equal ly b) Align pulleysc) Repair or replace pulley ha lf
2Belt glazed excessively or having baked appearanceCAUSE Excessive sli ppage caused bya) Insuffic ient pressure on belt sidesbRu sted dri ve driven pulley shafts c) Oil on pu ll ey surfaces
a) Check drive pulley for worn or missing flyweights roll ers b) Clean shaft with steel woo lc) Clean pu lley surfaces with fin emery cloth and clean cloth d) Insta ll correct governor
d) Incorrect ce ntrifuga govern or3Belt worn excessively in top widthCAUSE
Considerable use