How to Adjust a Snowblower Carburetor

Adjusting a Snowblower Carburetor

• 1

  Remove the air filter from the top of the carburetor and make sure it is clear of debris. If the carburetor is corroded, it will need to be replaced.

• 2

  Locate the idle screw at the base of the carburetor and use the flathead screwdriver to adjust the idle screw. The idle screw controls the amount of air entering the carburetor when the snowblower's throttle is open. To lessen the amount of air entering the carburetor (this reduces the power of the snowblower's engine), turn the screw to the right. Turn the screw to the left to increase the amount of air.

• 3

  Use the adjustable wrench to adjust the carburetor's low-speed needle, which is located in the fuel intake area. To increase the engine's idle speed, turn the low-speed needle counter-clockwise.

• 4

  Adjust the carburetor's choke valve by tightening or loosening its screw with the Phillips-head screwdriver. To increase the power of the engine, loosen the screw. Doing so will loosen the choke valve and allow more fuel to enter the carburetor when the snowblower's engine is running.

• 5

  Unscrew the carburetor's float valve using the adjustable wrench. Check the attachment area for corrosion and clean the float valve with a dry cloth and WD-40. Reattach the float valve to the carburetor's fuel intake area.