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If you're experiencing issues with your Briggs and Stratton fuel pump, it may be time to replace its spring. Before you begin, it's important to understand the function of a fuel pump. In engines where the gas tank is mounted lower than the carburetor, a fuel pump is necessary to move fuel through the line, as gravity alone is insufficient. To fix or replace the fuel pump, you'll need to turn off the fuel valve and stop the fuel flow. Then, you can remove the mounting screws and disconnect the fuel hoses. After inspecting the pump for damage, you can soak metal parts in a cleaner and check the hoses for cracks or wear. Finally, you'll replace any faulty parts, including the spring, and reassemble the pump.
Characteristics | Values |
---|---|
When to replace the spring | When the fuel pump is damaged, or there are hairline cracks and other damage to the external surfaces of the pump. |
What to do before replacing the spring | Turn off the fuel valve at the base of the tank where the fuel line is attached. If there is no fuel valve, stop the flow of gas using a fuel line clamp. |
What to do after turning off the fuel valve or clamping the fuel line | Loosen the mounting screws and remove the pump from the mounting bracket or carburetor. |
What to do after removing the pump | Check for hairline cracks and other damage to the external surfaces of the pump. If it is damaged and has a metal body, discard the pump and perform a fuel pump replacement. |
What to do if the pump is damaged | With the fuel valve closed or the line clamped, remove the mounting screws. Then, disconnect the fuel hoses using needle-nose pliers to loosen the clips. |
What to do after disconnecting the fuel hoses | Remove the screws and disassemble the pump. |
What to do after disassembling the pump | Inspect the body for cracks or other damage. Soak metal parts in an all-purpose parts cleaner for up to 15 minutes. |
What to do after inspecting the body for cracks or other damage | Check the hoses for cracks, softening or hardening, and replace any faulty parts. |
What to do after checking the hoses | Discard old gaskets, diaphragms, and springs, and replace them with parts from an original manufacturer's repair kit. |
What to do after replacing old parts | Place the diaphragm spring and then the cup over the center of the pump chamber. Also, insert a valve spring. |
What to do after placing the diaphragm spring and inserting a valve spring | Install the diaphragm, gasket, and cover and attach with pump screws. Tighten the screws using a torque wrench. |
What to do after tightening the screws | Attach the pump to the carburetor or mounting bracket, using the pump mounting screws. |
What to do after attaching the pump | Always run the engine after new pump installation or repair to verify that there are no leaks. |
What You'll Learn
Turn off the fuel valve
Turning off the fuel valve is an important step when replacing the spring on a Briggs and Stratton fuel pump. This step ensures that the flow of fuel is stopped before any maintenance work is carried out. Here is a detailed guide on turning off the fuel valve:
Locate the fuel valve: The fuel valve on a Briggs and Stratton engine is typically found at the base of the fuel tank, where the fuel line is attached. It is designed to control the flow of fuel to the engine.
Assess the type of fuel valve: Some Briggs and Stratton engines may be equipped with a fuel valve, while others may not. If your engine has a fuel valve, it will be located at the base of the tank. If there is no fuel valve present, you will need to stop the flow of gas using a fuel line clamp instead.
Shut off the fuel valve: Once you have located the fuel valve, turn it off. This will cut off the fuel supply to the engine, ensuring that no fuel can leak out during the spring replacement process.
Secure the fuel line: Before proceeding with any maintenance or repair work, ensure that the fuel line is securely clamped or disconnected to prevent any accidental fuel discharge. It is crucial to perform this step before removing the fuel pump or making any adjustments.
Verify the fuel valve's condition: Over time, fuel valves can become damaged or worn. Inspect the fuel valve for any signs of cracks, leaks, or other damage. If the fuel valve appears damaged or faulty, it is recommended to replace it with an original Briggs and Stratton part to ensure compatibility and reliability.
Understand the purpose of the fuel valve: Fuel valves play a critical role in Briggs and Stratton engines. They help prevent fuel leaks and maintain engine safety when the equipment is not in use. By managing the flow of fuel, these valves contribute to the overall efficiency, performance, and longevity of the engine.
By following these steps, you can safely and effectively turn off the fuel valve on your Briggs and Stratton engine, allowing you to proceed with replacing the spring on the fuel pump. Remember to refer to your specific engine's manual for additional instructions or variations.
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Stop the fuel flow with a clamp
To stop the fuel flow with a clamp, start by turning off the fuel valve at the base of the tank where the fuel line is attached. If your equipment does not have a fuel valve, you will need to use a fuel line clamp to stop the flow of gas. Once the fuel flow is stopped, you can proceed to loosen the mounting screws and remove the pump from the mounting bracket or carburetor.
It is important to stop the fuel flow before attempting to remove or replace the fuel pump to avoid spills and leaks. This can be done by turning off the fuel valve, if your equipment has one. The fuel valve is typically located at the base of the tank where the fuel line is attached. If your equipment does not have a fuel valve, you can use a fuel line clamp to stop the flow of gas. Make sure to tighten the clamp securely to prevent any fuel leakage.
Once the fuel flow has been stopped, you can proceed to remove the fuel pump. First, loosen the mounting screws that secure the pump to the mounting bracket or carburetor. Be careful not to drop or damage the screws, as you will need them to secure the new fuel pump. After loosening the screws, carefully lift the fuel pump out of the mounting bracket or carburetor. Set the old pump aside and prepare the new fuel pump for installation.
By following these steps, you can safely and effectively stop the fuel flow using a clamp, allowing you to proceed with the replacement of the spring on your Briggs and Stratton fuel pump. Remember to refer to the specific instructions provided by the manufacturer for your particular model to ensure a proper and safe procedure.
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Loosen the mounting screws
To loosen the mounting screws, you will need to first turn off the fuel valve at the base of the tank where the fuel line is attached. If your equipment does not have a fuel valve, you must stop the flow of gas using a fuel line clamp. Once the fuel source is cut off, you can proceed to loosen the mounting screws.
The mounting screws hold the fuel pump in place, either on the mounting bracket or the carburetor, so you will need to use the appropriate tool to unscrew them. Make sure to keep the screws in a safe place as you will need them again when installing the new fuel pump.
Once the mounting screws have been loosened, you can carefully remove the fuel pump from the mounting bracket or carburetor. Take care not to damage any surrounding components or connections. With the fuel pump removed, you can now begin the process of replacing the spring.
It is important to note that working with fuel and mechanical components can be dangerous if the proper precautions are not taken. Always refer to the equipment's manual or seek advice from a qualified technician if you are unsure about any part of the process.
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Remove the pump
To remove the pump from your Briggs and Stratton engine, start by turning off the fuel valve at the base of the tank where the fuel line is attached. If your engine does not have a fuel valve, you can stop the flow of gas using a fuel line clamp.
Next, loosen the mounting screws and remove the pump from the mounting bracket or carburettor. You can then check the pump for hairline cracks and other damage. If the pump is damaged and has a metal body, discard it and perform a fuel pump replacement. If the pump has a plastic body, you may be able to repair it.
To continue with the removal, with the fuel valve closed or the line clamped, remove the mounting screws. Then, disconnect the fuel hoses using needle-nose pliers to loosen the clips.
Finally, remove the screws and disassemble the pump. You can now inspect the body for cracks or other damage. Soak metal parts in an all-purpose parts cleaner for up to 15 minutes.
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Check for hairline cracks
To check for hairline cracks on your Briggs and Stratton fuel pump, you must first locate the pump. It is typically mounted on the carburetor, near the fuel tank, or between the tank and carburetor.
Next, turn off the fuel valve at the base of the tank where the fuel line is attached. If there is no fuel valve, stop the flow of gas using a fuel line clamp. Loosen the mounting screws and remove the pump from the mounting bracket or carburetor.
Now, carefully inspect the pump for hairline cracks and other damage to its external surfaces. Pay close attention to detail as these cracks can be very fine and may be difficult to spot. Look for any signs of stress or fractures on the pump's body. If the pump is damaged and has a metal body, discard it and perform a fuel pump replacement.
If you are having trouble spotting hairline cracks, you may want to try using a magnifying glass or a small endoscope camera to get a closer look at the pump's surface. Additionally, you can try cleaning the pump with an all-purpose parts cleaner before inspecting it. Soak metal parts in the cleaner for up to 15 minutes. This may help to remove any dirt or debris that could be obscuring your view and making it harder to detect hairline cracks.
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Frequently asked questions
The fuel pump is typically mounted on the carburetor, near the fuel tank, or between the tank and carburetor.
On a normally operating fuel pump, there should be no gasoline present external to the pump or in the pulse line. If there is fuel in these locations, or if the pump is not providing fuel to the engine, it may need to be replaced.
First, turn off the fuel valve at the base of the tank where the fuel line is attached. If there is no fuel valve, stop the flow of gas using a fuel line clamp. Then, loosen the mounting screws and remove the pump from the mounting bracket or carburetor.
Check for hairline cracks and other damage to the external surfaces of the pump. If it is damaged and has a metal body, discard the pump and perform a fuel pump replacement.