1970-1973 Ski-Doo Snowmobiles Technical Data Manual, Page 12Get this manual
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1972 MODEL
Two 7 Smm 70mm 335cc 9:1 Electric 100" 30-5S" 34-34" 362 1070 sq.in0.332 15" 1534 75W M-240-Tl .020" .014" .018" gals6.25 gals201 Drum Optional Optional
Two 2x64.5