1981 Ski-Doo Shop Manual Supplement, Page 116Get this manual
SECTION 06 SUB-SECTION 01 (BOGIE WHEELS)
BOGIE WHEELS
For the following 1981 models:
ElanSpirit Alpine
refer to the equivalent models in the 1980 Bombardier Snowmobiles Shop Manual(1981 SUPPLEMENT) (BOGIE WHEELS)