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I have replaced the fuel ines on my Sears Weedwacker string trimmer. The engine will start but dies. how can i tell if I routed the lines properly?

Model 358.791070

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Trimmers & Edgers , Kenmore PRO Appliances
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4 Answers from these members:
Manage My Life
I see you have replaced the fuel lines on Sears Weedwacker. While you are waiting on an expert to answer your question. You can visit SearsPartsDirect.com website to view diagram. I attached the link below. Hope this helps! Good luck.
by Manage My Life
September 11th, 2010
Answered in 8 minutes
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david demaree
Hi Don, here's a link to a fuel line sketch. Have you cleaned the spark arrestor in the muffler? If that screen gets clogged the backpressure stalls the engine at high idle. Good luck.
by david demaree
September 11th, 2010
Answered in 9 hours
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Mark T
If you have one large fuel line and one smaller this eliminates some chance for error. If you have 2 small fuel lines to the carburetor connect them and start the engine. Reversing the fuel lines will not prevent the engine from starting. If you have them connected backwards, the engine will start and die. Reverse them and you will be correct.

The routing of the fuel lines vary from model to model. Keep in mind that the primer bulb circulates fuel from the tank, through the carburetor, and back into the fuel tank. One line goes from the fuel tank to the carburetor. One line goes from the fuel tank to the primer bulb, from the primer bulb to the carburetor, and back to the fuel tank. I have provide a drawing of how the fuel lines should be routed.

Be careful to not put a fuel line too near a hot place on the engine. If the gas is overheated it will vapor lock and stop fuel flow. Be aware of anything that could rub or vibrate against a fuel line and cause a leak.

If the muffler is plugged the engine will not run well. If you think this might be the problem I recommend checking the screen inside of the muffler. It can be cleaned with a wire brush and carburetor cleaner.

Thank you for using Manage my life.

Here is a link to order any parts you need.

Sears Parts Direct

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If you do not feel confident repairing this problem yourself, then you can have it repaired by a Sears technician. Here is a link that will provide the nearest drop-off locations:

Sears Home Services

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by Mark T Earned 1,698 community points in Kenmore PRO Appliances
September 12th, 2010
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Manage My Life
Here is a photo of how the fuel lines hook up. I'm having the same problem. It will start, run on choke but die when choke released. I cleaned the carb best I could and could get it to run without the choke but I keep having to onen and close, feather, the throttle to keep it running. I now suspect the diaphram that operates the needle & seat has been damaged because of the alcohol in the fuel.

I've ordered a carb. Hopelfuly that will fix it.
by Manage My Life
May 10th, 2012
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