Question about Briggs & Stratton Briggs and Stratton 030451 5000 Watt Portable Gasoline Generator

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My neighbor gave me a 10 year old 5000 watt Coleman with a 10hp Briggs that was not running. It would run on starter fluid so I focused on a fuel problem. New fuel, fuel filter and oil. Dissassembled the carb and found no obstructions. The fuel pump guts looked fine too. The Briggs drawing showed 2 small springs in the pump that were not in this pump. I ordered a new pump. In the mean time I removed the pump and plugged the fuel tank line straight into the carb bowl and it started on the first pull. The tank is above the carb, so why is a fuel pump needed? Runs fine without the pump. Anyone have a good reason to reinstall the new pump when it gets here?

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That's interesting that you bypassed the fuel pump after noticing that the carburetor was below the tank, not needing a fuel pump to start the engine.

Maybe they put a fuel pump in to ensure that the float bowl valve is not the only thing preventing gas from overflowing into the carburetor when stored for a long period of time.

I would put the pump in if that's the way they originally designed the fuel supply for the engine, just to be safe.

Good luck on this repair.

Posted on Dec 31, 2010

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