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To all the respondents, thank you for all of your input so far.
I got around to doing some PM to the engine:
1] the fuel in the tank was reduced to approximately 4 ounces of a nasty smelling viscous liquid. I removed the tank and emptied it into a milk jug. Then I...
Hi All, I just got a 5HP Mercury from I believe 1993 (Can't find Ser# boat & trailer are '93). There is a lot of varnish in the bottom of the onboard fuel tank (Polyethylene- High or Low density?). Research shows Methyl Ethyl Ketone and Acetone to be the best solvents for loosening/ dissolving...
