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  1. L

    Mercury 4hp Gnat

    remove engine cowling, wrap a long cord around the top using the slots provided
  2. L

    Mercury 4hp Gnat

    I just use a socket on a cordless drill
  3. L

    Adding a fuel pump to Merc 4 HP Gnat, help needed

    Post No. 2 doesn't give me enough info, no photo and no proceedure, I need more info.
  4. L

    4 hp Gnat with an added fuel pump

    This link was on Marine Engine.com/Youtube. It shows a 4 HP Gnat with an added fuel pump and fuel filter. The fuel pump (hidden behind hoses) was added because these Gnat's were famous for not gravity feeding. I'd like to know what fuel pump was used as these are very tight quarters. Was it a...
  5. L

    Adding a fuel pump to Merc 4 HP Gnat, help needed

  6. L

    Adding a fuel pump to Merc 4 HP Gnat, help needed

    The video shows a small round fuel pump, want to know what that was.
  7. L

    Adding a fuel pump to Merc 4 HP Gnat, help needed

    I've seen those but Can anyone send me a photo? These are usually for 4 strokes aren't they? where they have a third hose connection to somewhere. Help
  8. L

    Adding a fuel pump to Merc 4 HP Gnat, help needed

    This link was on Marine Engine.com/Youtube. It shows a 4 HP Gnat with an added fuel pump, I'd like to know what fuel pump was used as these are very tight quarters. Larry...
  9. L

    Mercury 4hp Gnat

    I've had a Gnat for years, because this unit doesn't have a fuel pump it relies on gravity feed. Fill the tank up and don't go below half full. The carb is a very poor design and needs constant tweeking with the fuel mixture. Don't use the stock pull cord, remove the engine cover and wrap a long...
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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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