How to rebuild a leaf blower carburetor

In a well-ventilated area, remove the fuel cap and empty the fuel tank into an approved storage container.

Disconnect the spark plug wire.

Remove the screws from the air filter cover.

Remove the air filter cover.

Remove the carburetor mounting screws.

Pull the air box out and release it from the carburetor throttle and choke levers.

Note the configuration of the small and large fuel lines on the carburetor. Remove the fuel lines from the carburetor.

Discard the carburetor.

Remove the top cover with the primer bulb from the carburetor. 

Remove the primer bulb from the top cover.

Remove the gasket and diaphragm from the top cover.

Replace the primer bulb if it’s stiff or damaged.

Use a Phillips screwdriver to remove the screws from the bottom cover of the carburetor.

Remove the bottom cover and diaphragm.

Separate the bottom cover and the diaphragm.

On the bottom of the carburetor, note how the lever, spring and hinge pin fit together. Remove the screw and pull those components out of the carburetor.

Clean all ports and jets in the body of the carburetor with aerosol carburetor cleaner and compressed air. Allow the carburetor dry for at least 10 minutes—some carburetor cleaners can damage the diaphragms if the carburetor is reassembled when still wet.

Install the needle and lever on the bottom of the carburetor and screw them into place. Then install the gasket, diaphragm and cover, in that order.

Install the top cover and primer bulb.

Push the fuel lines onto the proper connections on the carburetor.

Insert the carburetor into the air box with the throttle and choke levers positioned properly.

Position the carburetor on the side of the engine and reinstall the mounting screws.

Position the air filter cover over the carburetor and secure it with the mounting screws.

Reattach the spark plug wire.