1979 Ski-Doo Supplementary Shop Manual, Page 19Get this manual
c 5Belt sides worn convave
SECTION 02 SUB-SECTION 02 (D RIVE BELT)
CAUSERough or scra tc hed pu ll ey surfacesb) Unspec ified type belt
REMEDY a) Repair or replace b) Repla ce belt ith co rrec Bombardi er belt
6Belt desintegration
CAUSE a) Excess ive belt speed