1970 Evinrude Ski-Twin 33 HP Service Repair Manual P/N 4687, Page 43Get this manual

1970 Evinrude Ski-Twin 33 HP Service Repair Manual P/N 4687, Page 43

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DO NOT scratch cylinder head gasket surface of cylinderUse surface plate to surface this areaWith continued operation of the motor, the cylinder walls will take on glaze which reduces the effectivenes