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Hi, Just bought a 2nd hand petrol lawnmower today on eBay and found that when adding fuel it leaks badly from the carburetter/primer area.. Whether primed or not. The mower is only 6 months old and in very good condition, the engine did start briefly with barely any fuel in tank and runs okay, but when I added more fuel it pours out and floods so obviously wont start. I'm thinking this is probably not a major problem to fix? Any ideas?

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The likely problem is a cut or abraded fuel line.

You likely will need to remove the plastic or metal engine cover to gain access to the run of the fuel line. Dry the area thoroughly and add fuel slowly watching for any leaks. Most leaks occur at the carburetor or at the fuel tank where it meats the fuel hose. A clamp should be used at both ends.

If this is not the problem, look closely at the fuel petcock on the bottom of the fuel tank. If it attaches with a screw, it may have a gasket that is leaking.

If the engine is a Tecumseh, look closely at the bowl at the bottom of the carburetor (if so equipped). There is often a bowl drain that has an O-ring that can become dislodged.

Sounds like a pretty easy fix as long as you can isolate the issue.

Posted on Sep 28, 2010

Testimonial: "Thanks for that - I will check the fuel line first as you suggest, tho the mowers like new so it should not be worn.. "

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