1970-1973 Ski-Doo Snowmobiles Technical Data Manual, Page 10Get this manual

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1971 MODEL

399ER TWO 2x64.S M.M2x61 M.M399 C.c8.75: 11334" 105-12" 35" 39" 543 485 2160sq.in17S6sq.in0.251 0.276 2xlS" 1339 Standard Electric 7SW W240-T-1" .018 .022 .014"-.018" gals6.25

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