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Yard machine tiller won't stay started!

The tiller (B&S engine) wouldn't start this year (ran great for 5 yrs or so). Checked for gas feed ...ok. Checked for spark ...ok. Wouldn't start. Put in new plug and relatively fresh gas. It starts, but only last for a few seconds before shutting off. What should I investigate next?

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  • tolkien Nov 17, 2008

    Thanks Joe. I'll work on the carb rebuild over the winter

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There is a small diaphram on the side of the carb that simply wears out. It's rubber coated mesh and the rubber coating breaks down and it stops pumping fuel into the carb. Sometimes you can run with the choke on partially, but it will burn 10 times the amount of fuel and cause more damage to the engine itself. I think it's about a $10.00 part.

Posted on Dec 08, 2008

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I would suggest you have the carbureator rebuilt, ethonal breats down into a gum that cloggs passages in carb need to be very clean to run properly. use stabil (fuel additive) in outdoor equipment gasoline and Sea Foam is also a exelent fuel additive

Posted on Nov 16, 2008

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Try checking the oil. Some of these small engines have an oil sensor that will keep it from running if it is low on oil. Sounds crazy but my buddy just went through exactly the same thing.

Posted on Nov 19, 2009

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My 5 hp craftsman tiller won't stay running changed gas sprayed carb new plug started it ran ok next day starts won't stay running dies fast like no fuel but can smell gas.


when it dies see if it will restart using a shot of starting spray in the air cleaner if it starts or sputters, sounds as if you have a plugged up carb you will need to dissasemble and soak in white vinegar for a few hours to un clogg (carefull with any gaskets)
if still nothing even with spray then you have a weak/defective coil or dammaged spark plug (start with plug replacement)

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Tiller won't start.


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