1970-1979 Ski-Doo Snowmobiles Service Manual, Page 75Get this manual
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CHAPTER FOUR
1 Distance nut 2 Cylinder head (P.T.a 3 Distance nut (short) 4 Support sleeve 5 Cylinder head (mag 6 Sealing ring 7 Exhaust manifold 8 Exhaust gasket 9 Cylinder head gasket 1