1979 Ski-Doo Supplementary Shop Manual, Page 92Get this manual

1979 Ski-Doo Supplementary Shop Manual, Page 92

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SECTION 04 SUB-SECTION 02 (ENG INES)
At assembly, place the pistons over the connecting rods with the letters AUS (over an arrow on the piston dome) facing direction of the exhaust port15.6cm