1981 Ski-Doo Shop Manual Supplement, Page 26Get this manual
SECTION 03 SUB-SECTION 01 (ENGINE TOLERANCE MEASUREMENTS)
ENGINE TOLERANCE MEASUREMENTS
For service procedure of engine tolerance measurements, on all 1981 models, refer to the 1980 Bombardier Snowmobiles Shop Manual, section 03-01 (Engine Tolerance Measurements)For specifications applicable to the 1981 models, refer to section 02sub-section 03-01 (Technical Data List) of this manual