1970-1973 Ski-Doo Snowmobiles Technical Data Manual, Page 17Get this manual
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1973 MODEL Specifications OL YMPIQUE
335 One 7 Smm 70mm 335cc 9:1 HR Manual 99 14" 31 12" 43"
340 Two 59.5mm 61mm 339cc 9:1 HR Manual 9914" 31 12" 43"
340E Two 5