Cleaning the Carburetor Main Jet (Generator Maintenance)

Cleaning the carburetor main jet can restore proper fuel flow and improve generator performance if the engine is surging, running rough, or struggling to start. The video demonstrates how to access and clean the jet inside the carburetor.

Tools Required

• Socket wrench

• Wrench

• Flathead screwdriver

• Carburetor cleaner (recommended)

• Clean rag or compressed air

Step-by-Step Procedure

Step 1: Turn Off and Cool the Generator

Make sure the generator is:

• Turned OFF

• Allowed to cool completely

This prevents burns and ensures safe maintenance.

Step 2: Remove the Air Filter Cover

Locate the air filter housing on the generator.

1. Remove the air filter cover screw.

2. Remove the air filter cover.

3. Take out the air filter element and filter holder.

This exposes the carburetor assembly.

Step 3: Remove the Air Filter Assembly

To fully access the carburetor:

1. Remove the air filter housing nuts.

2. Remove the air filter bracket nut.

3. Disconnect any air filter hoses attached to the housing.

4. Remove the entire air filter assembly.

This provides clear access to the carburetor body.

Step 4: Remove the Carburetor Solenoid

At the bottom of the carburetor bowl, locate the carburetor solenoid.

1. Use a wrench to unscrew the solenoid.

2. Carefully remove it from the carburetor.

This opens access to the carburetor bowl and main jet.

Step 5: Remove the Carburetor Bolt

Next, remove the carburetor bolt holding the bowl in place.

Once the bolt is removed, you will be able to access the main jet inside the carburetor.

Step 6: Remove the Main Jet

Locate the main jet inside the carburetor bowl.

1. Use a flathead screwdriver.

2. Carefully unscrew the main jet.

Be careful not to strip the jet while removing it.

Step 7: Clean the Main Jet

Clean the jet thoroughly to remove debris or fuel deposits.

You can clean it using:

• Carburetor cleaner spray

• Compressed air

• A very thin wire to clear the jet opening

Make sure the small jet hole is completely clear.

Step 8: Reinstall the Main Jet

After cleaning:

1. Screw the main jet back into the carburetor.

2. Tighten it securely, but do not overtighten.

Step 9: Reassemble the Carburetor

Reinstall all removed components in reverse order:

1. Reinstall the carburetor bolt / solenoid

2. Reattach the air filter housing

3. Reconnect any hoses

4. Install the air filter element

5. Replace the air filter cover

When Should You Clean the Carburetor Jet?

You may need to clean the carburetor jet if the generator is experiencing:

• Engine surging

• Hard starting

• Engine stalls

• Rough running

• Generator sat unused for a long time

Fuel varnish or debris can partially block the main jet, restricting fuel flow.

✅ Support Tip (Great for Gorgias AI):
Many customers reporting surging generators or rough running engines are experiencing a clogged carburetor jet, especially if the generator sat unused with fuel in it.