August 1, 2013

How to replace a leaf blower carburetor

By Lyle Weischwill
How to replace a leaf blower carburetor

This DIY repair guide shows how to replace a carburetor in a leaf blower. The carburetor mixes fuel and air in the right proportions so that the spark plug can ignite the mixture inside the cylinder, powering the engine. If the leaf blower engine won't start even though there's fuel in the tank, the carburetor could be the problem. You could rebuild the carburetor, but many people find it easier to replace it, using a manufacturer-approved replacement part.

Use this process to replace the carburetor on common Craftsman, Husqvarna, MTD, Weed Eater, Troybilt and Poulan leaf blowers.

If you prefer to rebuild the carburetor, follow the step-by-step instructions in How to Rebuild a Leaf Blower Carburetor.

Quick links
Tools required
Torx screwdriver
Needle-nose pliers
Work gloves
Repair difficulty
Time required
30 minutes or less
Repair difficulty
Time required
30 minutes or less

Instructions

01.

Drain the fuel tank

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

Drain the fuel tank.

Drain the fuel tank.

02.

Disconnect the spark plug wire

To ensure that the leaf blower can’t start, disconnect the wire from the spark plug.

Disconnect the wire from the spark plug.

Disconnect the wire from the spark plug.

03.

Remove the air filter cover

Remove the screws from the air filter cover and then remove the air filter cover.

Remove the air filter cover screws.

Remove the air filter cover screws.

Remove the air filter cover.

Remove the air filter cover.

04.

Remove the carburetor

Remove the carburetor mounting screws.

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

Note the configuration of the small and large fuel lines on the carburetor so you can reconnect them correctly later and then remove the fuel lines from the carburetor.

Discard the carburetor.

Remove the carburetor mounting screws.

Remove the carburetor mounting screws.

Pull off the air box.

Pull off the air box.

Remove the fuel lines from the carburetor.

Remove the fuel lines from the carburetor.

Remove the carburetor.

Remove the carburetor.

05.

Install the new carburetor

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.

Reconnect the fuel lines.

Reconnect the fuel lines.

Reinstall the carburetor mounting screws.

Reinstall the carburetor mounting screws.

06.

Reinstall the air filter cover

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

Reinstall the air filter cover.

Reinstall the air filter cover.

07.

Connect the spark plug

Reattach the spark plug wire.

Reattach the spark plug wire.

Reattach the spark plug wire.

Warning: Undertaking repairs to appliances can be hazardous. Use the proper tools and safety equipment noted in the guide and follow all instructions. Do not proceed until you are confident that you understand all of the steps and are capable of completing the repair. Some repairs should only be performed by a qualified technician.
Symptoms for gas leaf blowers

Choose a symptom to see related leaf blower repairs.

Main causes: stale fuel, dirty air filter, bad spark plug, cracked fuel lines, clogged carburetor
Main causes: cracked fuel lines, leaky carburetor seals, damaged fuel tank cap, cracked fuel tank
Main causes: damaged fan blade, engine needs a tune up, dirty carburetor
Main causes: bad gas, clogged air filter, cracked fuel lines, clogged fuel filter, dirty carburetor, bad spark plug, worn piston rings
Main causes: mixing too much 2-cycle oil with the gas, dirty air filter, clogged carburetor, engine needs tune up
Repair guides for gas leaf blowers

These step-by-step repair guides will help you safely fix what’s broken on your leaf blower.

August 1, 2013
By Lyle Weischwill
How to replace a leaf blower carburetor

The carburetor could be the problem If the leaf blower engine won't start even though there's fuel in the tank. Follow these instructions to replace the carburetor.

Repair difficulty
Time required
 30 minutes or less
August 1, 2013
By Lyle Weischwill
How to replace leaf blower fuel lines

The fuel lines on a leaf blower deteriorate with time and eventually can split or crack. You can remove and replace them yourself, following these instructions.

Repair difficulty
Time required
 60 minutes or less
August 1, 2013
By Lyle Weischwill
How to rebuild a leaf blower carburetor

If the leaf blower engine won't start even though there's fuel in the tank, the carburetor could be the problem. Follow these instructions to rebuild it in less than 30 minutes.

Repair difficulty
Time required
 60 minutes or less
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