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    1980 70 hp 3cylinder sealant or no sealant

    Replacing the gasket on the exhaust manifold. Is a sealant needed for this particular motor? Thanks
  2. A

    1980 70 hp 3cyl issue

    Hoping for some boat guys input if possible. Took the lower unit off of my 1980 Mercury outboard to replace the impeller. This is what I found. Does anyone know what this plastic pc that melted is called and possibly somewhere I could find one? Appreciate any help or direction.
  3. A

    1980 70 hp 3cylinder

    I've got a 1980 70 hp 3cyl OB Merc and I've never had any issues with it. Just got it ready for summer fishing n it ran great in my yard with the muffs on. No issues at all. I got her out on the lake n up to about 30 mph and she bogged out on me. Could not get it to restart. It's firing but...
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