Thank you for your question.
I am sorry you are having a problem with the trimmer. By what you have stated I suspect the carburetor has partly plugged passages. The new carburetors do not have mixture adjustment screws. When they have this problem the carburetor need to be toughly cleaned or replaced. I recommend replacing the carburetor because the $15.00 cost is better than the frustration of cleaning the carburetor.
I have checked the warranty of the trimmer and it has a two-year warranty. I recommend taking it to one of our drop off locations to have it repaired. Please click on this link to find out the closest drop off location.
Sears Home Services
If you would rather repair the trimmer yourself, please visit our parts website to order the needed parts.
Sears Parts Direct
Please let me know if you need further assistance on the repair of the trimmer.
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