1970-1973 Ski-Doo Snowmobiles Technical Data Manual, Page 38Get this manual
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1911 MODELS CARBURETOR SPECIFICATION CHART
ELAN 250, 250E OL YMPIOUE 300 OL YMPIOUE 335, 335E
TURN TURN TURN TURN TURN TURN TURN TURN TURN
OL YMPIOUE 399, 399E T'NT292