1980 Ski-Doo Shop Manual, Page 70Get this manual
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SECTION 03 SUB-SECTION 02, (ENGINES)
7 Cap nut MS (12)
2345678970 Flat washer 8.4 mm (12) Cylinder head Coolant outlet coffar Stud M6 75 (2) Stud (head) M8 44 (72) Gasket (2) Gasket