1984 Ski-Doo Shop Manual, Page 191Get this manual
SECTION 03 TRANSMISSION SUB-SECTION 02 (DRIVE BELT)
4Belt worn narrow in one sectionCAUSE
Excessive slippage in drive pulley caused by: a) Frozen or too tight track
b) Drive pulley not fonctioning properlyc) Engine idle speed too high d) Incorrect belt length
e) Incorrect pulley distance
a) Liberate track from ice or check track tension and alignmentb) Repair or replace drive pulley c) Reduce engine R.P.Md) Using unspecified type of beltReplace belt with carrect Bombardier belte) Readjust to specifications
5Belt sides worn concave[