riding mower question - PeachParts Mercedes-Benz Forum

benhogan · #1 06-14-2010, 08:57 AM

i know there's enough mechanical minds in this forum to answer my question...

on a fairly new riding mower, what is the purpose of the wires coming from the bottom of the sediment bowl underneath the carb? the older riding mowers' bowls do not have that. they just have a bowl.

does it somehow shut off fuel flow? I have a problem with fuel leaking out but not from the fuel tank. I think the fuel is leaking through the engine because the needle valve is staying open.

Antony · #2 06-14-2010, 12:33 PM

While I can't say for sure in your case, I can tell you with confidence that many new mowers (small engines) do, in fact, have an electrical fuel shutoff just as you describe. My bet is that your machine does have one.
Good luck with the leak - find it before your mower burns to the ground

-Tony

benhogan · #3 06-14-2010, 01:22 PM

Quote:

Originally Posted by Antony

While I can't say for sure in your case, I can tell you with confidence that many new mowers (small engines) do, in fact, have an electrical fuel shutoff just as you describe. My bet is that your machine does have one.
Good luck with the leak - find it before your mower burns to the ground

-Tony

Yeah I hope to fix it soon.

I fill the tank with fuel. For some reason, the fuel leaks out but not from the gas tank or the hoses to the carb. Very strange.

rscurtis · #4 06-14-2010, 10:33 PM

That is an "anti-backfire" valve. It closes the main jet when the key is shut off to prevent unburned fuel from being pumped into the red hot muffler where it will backfire when the engine stops. It has nothing to do with fuel leaking through the carb. Install a manual fuel shut-off valve in the fuel line to prevent that. Also, be sure the engine oil is not contaminated with gas.