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Why does my craftsmen weed wacker stop running when the choke is released?

I have a model 358.796600 craftsmen weed wacker (combination trimmer and edger) that recently will NOT run unless the choke is enabled. Whenever the choke is released the engine dies. I've tried replacing the fuel/oil mix and that hasn't helped. It will run indefinitely with the choke pulled out, I can even get some work done this way, but as soon as the choke is released the engine dies. I've even tried with the trigger in the same position as the choke, but as soon as the choke is released the engine dies. Any idea what might be wrong?

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Manage My Life
Go to EBAY and search for a Walbro carburetor adjustment tool. From your description (asterisk) it sounds like you will need the "splined" version of this tool. You should be able to get one for about $10.
by Manage My Life
March 23rd, 2012
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Manage My Life
Oh. Sorry I didn't realize this machine had that. Yes, there is a special tool for that. The bad news is that it is not made available to the public. The carburetor manufacturer produces these carbs to meet strict EPA standards. In an effort to keep the machine making as small of a carbon footprint as possible, they do not make the tools available to the public. However, I know people that have bought the tool from online sources and had no issues getting them. Basically it's up to the dealer to do the right thing. The manufacturer takes the position of "bring the machine in for service to an authorized servicer".

I have used needle nose locking pliers to turn them before. I'm not saying you should, but I am saying that it can be done.
by Manage My Life
June 7th, 2011
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Manage My Life
Thanks again so much for the reply. Those "screws" have a strange head, almost like a little asterisk. I tried turning them with needle-nosed pliers, that didn't work. Is there a special tool for this? I can take a picture if needed.
by Manage My Life
June 7th, 2011
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Manage My Life
This problem is almost always a result of a carburetor problem. Those small screws: Turn the both in (to the right) until they stop (do not force) and then back each one out one full turn and try the machine out. The one to the left is the low speed and the one to the right is the high speed. As you adjust them out only turn them 1/4 turn at a time to keep it from getting too far out of whack.
by Manage My Life
June 7th, 2011
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Manage My Life
I finally got around to looking at this, dis-assembled my carburetor and cleaned the "screen" that was inside it, there was some residue on it. After re-assembling, it started fine and does run now without the choke engaged, however, it still has this problem where the gas/trigger is very "touchy". If I give it too much gas, too fast, it bogs down and dies. Almost like the engine is flooding. So I basically have to pump the gas in short bursts to work the engine speed up, then it will run somewhat ok with the trigger depressed, at higher speed. But it still has trouble and I have to "pump/cycle" the trigger on and off to keep it running. It idles fine though. I suspect this is still an issue with the carburetor, as the gas is fine.
Is there some adjustment on this thing? Maybe the air/fuel mixture is not right? there seem to be two "screws" in this little recess on the back of the carburetor, I might try turning them, see if it's some adjustement thing.
Any thoughts?
by Manage My Life
June 4th, 2011
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Manage My Life
Your trimmer either has a problem with the carburetor or it has an air leak. Check where the carb mounts to the engine block to make sure it’s not loose and leaking air there. If that looks good, I would recommend just replacing the carburetor. They do not sell rebuild kits or internal parts for the carb anymore. With the price of a new complete carb (about $30), I understand why.

If you need the carb, the part number is 530071811. You can go

HERE

to order it as needed.

Thank you for using Manage My Life!
by Manage My Life
September 14th, 2010
Answered in 18 hours
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Manage My Life
`I can understand your inconvenience, while you wait for the expert to answer i would suggest for you to look at the link that i provided to you down bellow. I hope that it helps, good luck.
by Manage My Life
September 13th, 2010
Answered in 11 minutes
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