How To Adjust The Idle Screw On A Leaf Blower

Leaf blowers, like all lawn power equipment, should idle without the engine shutting down. You can adjust the idle screw on a leaf blower, although there are no rotating mechanisms to help identify when you achieve the perfect idle like there are on a trimmer. You must balance the idle somewhere between the engine running without shutting off, yet still reaching full operating speed without any type of hesitation.

Step 1

Locate the idle screw on your leaf blower. Most idle mixture screws are between the air filter housing and the body of the blower.

Step 2

Start the blower engine, and allow the leaf blower to run at high idle for one minute.

Step 3

Turn the throttle lever down to the slow position, and allow the leaf blower to idle. If the blower shuts off, turn the idle screw 1/8 turn clockwise with a flathead screwdriver. Start the engine, and allow the engine to idle. Continue turning the idle screw in 1/8 turn increments until the engine idles without shutting off.

  • Leaf blowers, like all lawn power equipment, should idle without the engine shutting down.
  • Turn the throttle lever down to the slow position, and allow the leaf blower to idle.

Step 4

Press on the throttle trigger to rev the engine to full operating speed. If the engine hesitates when raising the RPM, turn the idle screw 1/16 turn counterclockwise. Continue making these adjustments until the blower idles and revs up without hesitation.

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