1981 Ski-Doo Shop Manual Supplement, Page 129Get this manual
SECTION 06 SUB-SECTION 05 (TRACK)
1981 TRACK SPECIFICATIONS
CLEAT AND GUIDE ARRANGEMENT
TYPE 1: Narrow insert
TYPE 2: Narrow insert with shoulder
TYPE 3: Wide guide (large traek hole)WIDTH LENGTH (i nterior)
TRACK PART NUM BER