1970-1979 Ski-Doo Snowmobiles Service Manual, Page 39Get this manual
32 Table TILLOTSON CARBURETOR SPECIFICATIONS
CHAPTER TWO
Model Elan
Carburetor
Low Speed Adjustment (Turns)"
High Speed Adjustment (Turns)"
Idle Speed (rpm)
250,250 (1971,1972, early 1973) 250 (late 1973-1975) 292 55 (1972) 250T (1973) 250 T, 250 Deluxe (1974) 250 Deluxe (1975) 250 (1976) 25055 (1973) 29455 (1974) 30055 (1975) 25055 (1976) 250 (1978-1979) 250 Deluxe (1978-1979)
Olympique
HR-73A HR133A HD-228 HR-136A HR155A HR-165A HR173A HR-143A (2) HR-161A HR-166A HRl72A HR-173A HR172A
1,5001,800 1,800-2,000 1,800-2,200
Fixed 1,4 Fixed Fixed Fixed Fixed Fixed Fixed Fixed Fixed Fixed Fixed