Poulan P4500F 16-Inch Straight Shaft 25cc 2-Cycle Gas Powered Logo
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Anonymous Posted on May 31, 2014

Why will My weed eater only run with the choke fully on and cant give throttle?

Its a new trimmer and only used 5 times no problem till now.

1 Answer

Arthur

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  • Master 718 Answers
  • Posted on Sep 03, 2014
Arthur
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It sounds like the carb needs adjusted. Things can even happen to new weed eaters.

5 Related Answers

#1 Taper

Jim Parker

  • 1041 Answers
  • Posted on May 26, 2009

SOURCE: After rebuild only runs on half choke.Adjusting screw doesn't help

The rebuild you did is correct, but did you clean the small ports in the carb.? I use a Den Tek Brush (used for cleaning teeth). They work great for this job. You may also want to check the small screen in the carb. The smallest of particles can cause this problem.

Jim

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#1 Taper

Jim Parker

  • 1041 Answers
  • Posted on Jun 28, 2009

SOURCE: weed eater starts, runs 5 min. then cuts off

The gas cap may be clogged.

The next time you run the trimmer and it starts to die, loosen the gas cap. If it starts running again, then you know that it's a clogged gas cap.

You may also check the air breather, it may be dirty as well.

Just let me know if you need further assistance.

Jim

kennethrcalh

Remote Computer Rescue

  • 416 Answers
  • Posted on Jun 03, 2010

SOURCE: The trimmer starts like a dream but only runs with choke on

sounds like the carb needs to be removed and cleaned. It the chunk of metal that has the fuel line going to it on top of the engine.

Use a phillip screwdriver and possible a small ratchet to break it down and clean it thuroghly with gasoline.

After you get it back together and have cleaned it up as much as possible, crack her up with full choke again. this time though, allow it to run and barely ramp up the rpms enough to give it a little lug. When the engine seems to begin losing power, (these adjustments should be as small as possible until you get her running smooth) dial the choke back just enough to ramp up the rpms. This will probably take a few tries, but most definately should work in your case.

Once the trimmer is running smooth with the choke off you will be good to go.

Many times our trimmers and other 2cycle engines dont get the proper attention to keep them running up to par. Take the time to consider the unique properties of your tools to determine any possible future repair. Anytime you have and engine that burns a home mixed fuel there will be the risk of trash in the fuel system

GOOD LUCK AND PLS RATE THIS POST!!!! :D

Anonymous

  • 1 Answer
  • Posted on Jul 27, 2010

SOURCE: weed eater starts but won't stay running

just bought a new Poulan 25cc 2cycle gas power weed eater . I can start it with the choke on but as soon as put on run it dies.

Anonymous

  • 1 Answer
  • Posted on Sep 25, 2010

SOURCE: My weed eater featherlite fl20 dies when I give it

You mentioned you changed the filter. Air or fuel?
I had similar problems with my Echo and found it to be the fuel filter. With a wire clothes hanger hook the fuel lines in the fuel tank and gently pull them out of the opening. There should be a stone looking filter on the end of the line. Replace it. Can be purchased from your local lawn & garden center. Cheap too.

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Starting procedure

Terry: According to eHow.com:

"
  • Put on a pair of safety glasses. Remove the fuel cap from the Weed Eater and set it aside. Fill the fuel tank with unleaded gasoline that has been mixed with quality 2-stroke oil in a 40:1 ratio. Replace the fuel cap.
  • Move the Weed Eater to a safe place and lay it flat on the ground. Depress the fuel bulb located beneath the carburetor approximately six times to prime the engine. Press it slowly so that fuel has adequate time to traverse the fuel line.
  • Slide the handlebar-mounted engine "On/Stop" switch to the "On" position. Slide the choke lever beneath the fuel tank to the "Full" position.
  • Depress the "Throttle Lock" lever located beside the engine "On/Stop" switch. Keeping the lever depressed, squeeze the throttle trigger. Release the throttle lock. This sequence holds the trigger in the depressed position, which aids in starting the Weed Eater.
  • Roll the Weed Eater so that it is resting on the engine and the trimmer head shield only. This will allow the spinning trimmer head to avoid contact with the ground. Brace the Weed Eater by holding it to the ground with one hand. Using your other hand, pull the starter rope quickly until the engine begins to run. Do not pull the rope more than a dozen times. If it fails to start by then, squeeze the throttle trigger and continue to pull until the engine starts.
  • Allow the Weed Eater to warm up for about 15 seconds, then slide the choke lever to the "Off" position. Let the trimmer run for another minute without touching the throttle lever. After the Weed Eater has warmed up, squeeze the throttle trigger once to disengage the throttle lock. The trimmer is now operational.


  • Read more : http://www.ehow.com/how_6720315_start-gas-weed-eater.html"
    Jun 08, 2015 • Garden
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    Weed eater head spins on its own, no power.

    check the compression on your weedeater low compression will cause this
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    Primer bulb will not prime

    Hello Tony Galvan, I had to replace the fuel lines to keep from sucking air when I pressed on the primer bulb. Also, I took the carburetor apart and found the gasket was good by holding it up to the sunlight, no light came through indicating holes in the gasket. Then I took a magnifying glass and looked at the bottom half of the carburetor and noticed that a soft film of what looks like lint from a dryer had accumulated on a screen mesh type of filter. Once I cleaned the debris away, the weed wacker started every time. I pulled with a full choke and partially wants to start. Then moved the choke to half choke and pressed on the throttle fully and pulled, it started! But you must at least hold the throttle close to full until 10 seconds for the engine to warm up. Then move the choke to idle. Hope this helps.
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    just bought a new Poulan 25cc 2cycle gas power weed eater . I can start it with the choke on but as soon as put on run it dies.
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    Weed Eater Problems

    If it runs with the choke closed then it's not getting enough gas. Check the gas filter on the end of the gas line in the gas tank. Remove the gas cap and using a piece of wire with a hook on the end, reach in the tank and pull the gas line out through the opening. Check the filter on the end of it. You could also have a burst-ed diaphragm in the carburetor. This sucks the gas from the tank to the carb. If that's the case a new weed eater may be in order unless you can find someone with the parts to repair it. Also check the gas lines for leaks or breaks, 2 of them.
    May 17, 2010 • Troy Garden
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