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    Mercury 4 hp Gnat shifting adjustment

    I have a 1978 Merc Model 40, 4 hp Gnat outboard, (twin cyl.). These outboards were only made for a few years due to a number of factors including an inability to siphon. There was no fuel pump, the carb had to suck in the fuel thru a lower shutoff valve. I re designed the fuel flow to give a...
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