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I have a craftsman 25cc 2 cycle trimmer/weedwacker. It will start on full choke & run but once you squeeze the trigger & the choke kicks off, it dies. I have replaced fuel lines & in-tank filter & no help. ANY HELP?

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  • Master
  • 1,807 Answers

Sounds very much like a fueling problem, possible carb issue could need a clean or tuning issue.

Posted on Jul 31, 2013

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6 Suggested Answers

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Posted on Jan 02, 2017

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SOURCE: The weedwacker dies when I squeeze the throttle trigger

You need to clean the carburetor. Remove and disassemble carb. Use a den Tek Brush, (used to clean between teeth), to clean the small portals in carb. Use a carb. cleaner while cleaning. Make sure the small screen in carb. is free of debris. The smallest of paticles can cause the carb. not to run right. Reassemble the carb. and try starting. If there is no change, then you will need to buy a carb. kit for your trimmer. Replace all appropriateparts: gaskets, diaphragm, needle valve, and the small screen.

Jim

Posted on May 31, 2009

  • 1 Answer

SOURCE: Craftsman gas 25cc weedwacker starts, runs a few secs, then dies

The gas take up line is disconnected or is broken. I have the same problem and need to find a diagram to fux it.

Posted on Aug 28, 2009

digritz
  • 530 Answers

SOURCE: craftsman 32cc would not idle

If you are certain that you have correcting gaped the plug then the next step is to readjust the low end idle carburetor. If you look you should see two holes in the plastic cover that lead to the flow adjustment screws they may even be out in the open. If they are not labeled H and L (the L is the one you want), check your manual for the correct one. A good place to start is turning the screw all the way in then backing it out 1 1\2 turns. Then check it. If you still have problems do 1\4 turns out. After about one full turn from that you might want to consider taking the carburetor off and removing the float bowl or the bottom for a good cleaning. A sticking float could cause problems with your fuel flow.
Hope this helps.

Posted on Sep 03, 2009

  • 7 Answers

SOURCE: Craftsman model 358.791042, gasoline weedwacker wont stay running

let it warm up first and then pull the trigger. if that doesnt work, it might be the diaphram . they are cheap.

Posted on May 12, 2010

  • 3 Answers

SOURCE: Craftsman model 358.791042, gasoline weedwacker wont stay running

The high speed needle valve needs adjusting and it takes a special splined tool to adjust it. I currently am trying to find where I can purchase the tool to adjust the high and low carburator screws.

Posted on Aug 18, 2010

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Craftsman 25cc weedwacker (358.791030). Zama carburator (C1U-W19) Just rebuilt carb but did not adjust low speed/high speed screws. Starts on first pull (with choke lever actuated), and after warm up,...


need to adjust the high sscrew. i do mine in 1/4 turns. start machine, full throttle, adjust the h(high) til it clears up.i would start by turning 1/4 counterclock wise, just remember to keep track, in case it runs worse, the put it back to orig. then try the other way. but i suggest 1/4 turn at a time

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Sep 17, 2010 | Craftsman 25cc Gas Line Trimmer

1 Answer

Craftsman model 358.791042, gasoline weedwacker wont stay running


let it warm up first and then pull the trigger. if that doesnt work, it might be the diaphram . they are cheap.

May 10, 2010 | Garden

1 Answer

The weedwacker dies when I squeeze the throttle trigger


You need to clean the carburetor. Remove and disassemble carb. Use a den Tek Brush, (used to clean between teeth), to clean the small portals in carb. Use a carb. cleaner while cleaning. Make sure the small screen in carb. is free of debris. The smallest of paticles can cause the carb. not to run right. Reassemble the carb. and try starting. If there is no change, then you will need to buy a carb. kit for your trimmer. Replace all appropriateparts: gaskets, diaphragm, needle valve, and the small screen.

Jim

May 30, 2009 | Craftsman 25cc Gas Line Trimmer

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