Question about Troy-Bilt 4-Cycle Curve Shaft Gas String Trimmer #41ADT41C966

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25cc weed eater, will only idle

I have a 25 cc weed eater that will only idle I can only get it to start on full choke, imediatly have to switch it to half choke to keep it running. if I give it any throttle at all it quits. I have put in a new sparke plug, run new fuel lines, mixed new gas. The compression is 90 psi and the exhaust is not plugged. The carb only has an ajustment for the idle. Please help

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  • Anonymous Mar 25, 2014

    Hard to idle and does when moving switch to open

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Double check your carb as it should have a screw for the fuel mixture. some carbs have a plastic piece over them that only lets you move the screws so far if you need more extreme adjustment they pull out about a 1/8th of a inch then you can turn in then push it back in, same principals as making a flame on a bic lighter bigger, if you cant find it take some pics of your carb and email them to me @ prerunnerrngr@yahoo.com and i will point them out

Posted on Jul 14, 2009

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I have found out over 25 years fixing small engine carb are lot of the problems.rebuild the carb and clean real good blow out real good it will go back working fine the diapham go bad.allso change fuel filter to put new gasket between carb and block.let me know if this help you.please.

Posted on Jul 25, 2009

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1 Answer

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"

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