1978 Ski-Doo Shop Manual, Page 155Get this manual
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SECTION 04 SUB-SECTION 02 (ENGINES)
2 Nut 3 Engine support
45678 Flat washer Reinforcement plate Lockwasher Nut Exhaust gasket
9 Exhaust manifold 10 Lockwasher 11 Bolt 12 Alum