How to Unflood a Weedeater

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Weedeater gas trimmers use either a two- or four-cycle engine. Starting the trimmer is usually a matter of pushing the priming button three times and pulling the starter rope. When starting a cold engine, sometimes the priming bulb is pushed too often, causing fuel to flood the combustion chamber. Once the engine floods, the normal starting procedures will not get the trimmer running. In order to start the engine you must first unflood the Weedeater combustion chamber. Fortunately, the unflooding process also starts the Weedeater engine.

Things You'll Need

  • Socket wrench
  • Rag
  • Check the on/off switch and ensure that it is in the “On” position. Move the choke lever to the “Run” position. Depending on your trimmer, the word “Run” will be stamped near the choke lever or a small picture with a horizontal between two small vertical lines.

  • Squeeze and hold the throttle trigger with one hand. Pull the starter rope briskly three times with your free hand. This is usually enough to clear the extra fuel in the combustion chamber and start the engine. Repeat the rope-pulling process three times, if necessary.

  • Continue holding the throttle trigger for 15 seconds once the engine starts. The exhaust might smoke slightly as excess fuel is burned off. Release the trigger and allow the engine to throttle down to idling speed.

  • Disconnect the spark plug wire from the top of the spark plug if the trimmer does not start. Remove the spark plug from the trimmer with a socket wrench. Wipe the threads and electrode with a clean cloth to remove excess fuel.

  • Pull the starter rope three more time. Excess fuel in the combustion chamber will blow out of the spark plug hole. Thread the spark plug back into the trimmer and tighten with the socket wrench. Place the spark plug wire over the spark plug and start the trimmer as you would normally.

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