1978 Ski-Doo Shop Manual, Page 107Get this manual
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SECTION 04 SUB-SECTION 02 (ENGINES)
Elan et Spirit 250 Elan Deluxe (248), Citation 300(294) Olympique 300T(305), Olympique and Nuvik 340(343), Everest 340(343), Futura 400(402) RV and Son