Why is my lawn mower not getting gas to the carburetor?

Answered by Douglas Hiatt

I had a similar issue with my lawn mower not getting gas to the carburetor, and it was quite frustrating. After some troubleshooting, I found a few possible reasons for this problem.

1. Fuel shut-off valve: Check if your lawn mower has a fuel shut-off valve. This valve controls the flow of fuel from the tank to the carburetor. If it is in the closed position, no fuel will reach the carburetor. Make sure the valve is open and allowing fuel to flow.

2. Electric shut-off/solenoid: Some carburetors are equipped with an electric shut-off or solenoid that controls the fuel flow. If this solenoid is faulty or stuck, it can prevent fuel from reaching the carburetor. Check if the solenoid is functioning properly and not stuck in the closed position. Also, ensure there are no loose connections or wiring issues.

3. Clogged fuel jets: If fuel is reaching the carburetor but not getting into the engine, it could be due to clogged fuel jets. Over time, debris and varnish can accumulate in the small passages of the carburetor, blocking the flow of fuel. Cleaning the carburetor and jets with a carburetor cleaner can help resolve this issue.

4. Incorrect adjustment of screws: The carburetor has adjustment screws that control the fuel-air mixture. If these screws are not set to the proper settings, it can restrict the flow of fuel. Refer to your lawn mower’s manual or consult a professional to adjust the screws correctly.

5. Fuel filter issues: A clogged or dirty fuel filter can prevent fuel from reaching the carburetor. Check the fuel filter and clean or replace it if necessary.

6. Fuel line blockage: Inspect the fuel line for any blockages or restrictions. Sometimes, debris or dirt can accumulate in the fuel line, impeding the flow of fuel. Clear any obstructions and ensure the fuel line is clean and free of any leaks.

7. Dirty or faulty fuel pump: If your lawn mower has a fuel pump, it may become dirty or faulty over time. A dirty fuel pump can restrict the flow of fuel, while a faulty pump may not work at all. Clean or replace the fuel pump as needed.

I hope these troubleshooting steps help you identify and resolve the issue with your lawn mower not getting gas to the carburetor. Remember to prioritize safety and consult a professional if you’re unsure or uncomfortable performing any repairs yourself.