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How to Clear a Flooded Carburetor on a Chainsaw

Starting a cold chainsaw sometimes results in a flooded carburetor. Too often, the primer bulb is pressed too many times while attempting to start the device. When the chainsaw floods, there is excess fuel in the combustion chamber which pushes out the oxygen necessary for the spark to ignite the fuel. Clearing a flooded carburetor on a chainsaw is basically clearing the combustion chamber. When you clear the chamber the fuel from the carburetor also clears, allowing room for oxygen.

Things You'll Need

  • Socket wrench
  • Rag
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Instructions

    • 1

      Take the spark plug wire off the top of the plug of your chainsaw. Remove the spark plug using a socket wrench. Dry the bottom of the spark plug with a rag. Set the choke to the "Off" position, and make sure the power switch is in the "On" position.

    • 2

      Pull the starter cord three times, while holding your foot on the handle of the chainsaw. This clears out the excess fuel in the combustion chamber, and also allows oxygen into the chamber. Thread the spark plug back into the chainsaw and tighten using the socket wrench. Push the spark plug wire over the top of the plug.

    • 3

      Slide the choke lever to the full open position, and push it back to the half choke position. Make sure the power switch is in the "On" position. Pull the starter cord three times while holding the trigger. When the chainsaw starts, squeeze and release the power trigger to allow the engine to return to an idle speed. Push the choke to the "Off" position.