Sylvie Willis
A fuel filter is designed to strain gas before it reaches the carburetor in a lawn mower. A clogged or dirty fuel filter can cause poor engine performance or even cause the engine to stop running. This is because the fuel filter prevents debris from getting into the carburetor. This guide will take you through the steps to change the fuel filter in a riding mower.
Characteristics and Values Table for Changing Fuel Filter in a Riding Mower
| Characteristics | Values |
|---|---|
| Fuel filter location | Inside or attached to the fuel line, or inside the gas tank |
| Fuel filter type | Replaceable or non-replaceable |
| Replaceable fuel filter type | Canister-style or tube-style |
| Non-replaceable fuel filter type | Metal mesh in the bottom of the gas tank |
| Fuel filter function | Keeps dirt and debris from getting into the carburetor |
| Fuel filter maintenance | Check, clean, or replace at least once a year |
| Fuel filter replacement | Purchase manufacturer-approved replacement part and install |
| Safety precautions | Wear safety eyewear and have a dry cloth to handle fuel and fuel vapors |
| Fuel filter inspection | Hold filter away from face and check for light passing through; check for debris |
| Fuel filter micron rating | Measurement of filtration capability; smaller micron number indicates better filtration |
| Fuel line disconnection | Use pliers to release spring clips holding the line to the gas tank spigot and filter |
| Fuel filter removal | Slide metal clips on each side of the filter and pull the filter out of the fuel line |
| Fuel line reconnection | Reattach metal clips on both sides of the new filter and check for leaks |
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What You'll Learn
Prepare your work area and mower
To prepare your work area and mower, start by parking your mower in a flat, well-ventilated area, such as inside your garage. Ensure there are no open flames or fire sources nearby. Set the parking brake and turn the ignition switch off, removing the key. Disconnect the wire from the spark plug to prevent the engine from accidentally starting while you work.
Locate the fuel line and identify where it connects to your fuel filter. If your mower is equipped with a fuel valve, shut it off. It may be located at the base of the fuel tank, where the gas line is attached. If your tank does not have a valve, carefully clamp the gas line using a fuel line clamp, avoiding pinching the fuel line.
Before proceeding, wear safety eyewear to protect your eyes from liquid fuel or fuel vapors. Keep a dry cloth or rag handy to catch any dripping fuel and to wipe away any residue. If your filter is installed inside the tank, drain the tank before removing the filter.
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Locate the fuel filter
The first step to changing the fuel filter in your riding mower is to locate the fuel filter. The exact location of the fuel filter varies from one machine to the next, but it is generally inside or attached to the fuel line, or inside the gas tank.
If your mower uses a canister-style filter, it will be attached to the end of the fuel line. If your mower uses a tube-style filter, it will be inside the fuel line where it connects to the gas tank.
If you are unsure of where your fuel filter is located, refer to your operator's manual to determine the location. Once you have located the fuel filter, you can proceed to remove and replace it.
To access the fuel filter, you may need to open the hood of the mower and locate the fuel line coming from the gas tank. Follow this fuel line to the fuel filter. The fuel filter may be held in place with metal clips or spring clamps, which you will need to remove before detaching the fuel line from the filter.
It is important to work in a well-ventilated area when performing this task, and to take the necessary safety precautions to protect yourself from fuel vapors and spills.
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Remove the old fuel filter
Before attempting to remove the old fuel filter, it is important to take certain safety precautions. Wear safety eyewear to protect your eyes from liquid fuel or fuel vapors. Keep a dry cloth or shop towel handy to hold the filter and catch any dripping fuel. Park your mower in a well-ventilated area, on a level surface, and engage the parking brake. Turn the ignition switch off and remove the key. Disconnect the wire from the spark plug so the engine doesn't accidentally start while you're working on it.
Now, locate the fuel line and the fuel filter. The fuel filter will either be inside the fuel tank or fitted into the fuel line between the tank and the fuel pump. If your filter is installed inside the tank, you will need to drain the tank before removing the filter. Shut the fuel valve, if your tank is equipped with one. If not, clamp the gas line using a fuel line clamp, without pinching the fuel line.
If your filter is installed in the fuel line, use needle-nose pliers to remove the metal clips on each side of the filter, then slide the filter out of the fuel line. Shake the filter over a clean cloth to displace any remaining fuel, then use the cloth to wipe away any residue from the outside of the filter.
For canister-style filters, once you've removed the old filter, push the ends of the fuel line segments onto the spigots of the filter and use pliers to replace the spring clips. Be sure to install the canister-style filter in the correct direction, usually indicated by an arrow on the casing pointing in the direction of fuel flow.
For tube-style filters, simply pull out the old filter and pop in the new one, orienting it the same way as the old one.
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Inspect the old fuel filter
Inspecting and replacing the fuel filter on your riding mower is a simple task that can improve its performance and keep it running smoothly. The fuel filter is designed to strain the gas before it reaches the carburetor, preventing dirt and debris from entering and causing engine issues.
To inspect the old fuel filter, begin by locating the fuel filter. Refer to your mower's operator manual to determine its location, as it can vary between machines. Typically, the fuel filter is located inside the fuel tank or fitted into the fuel line between the tank and the fuel pump. Once located, park your mower on a level surface in a well-ventilated area, engage the parking brake, and turn off the ignition.
If your fuel filter is installed inside the tank, you will need to drain the tank before inspection. To do this, shut the fuel valve, usually located at the base of the fuel tank, or clamp the gas line if your tank is not equipped with a valve. Then, remove the metal clips on each side with needle-nose pliers, and slide it out of the fuel line. Catch any dripping fuel with a dry cloth. Shake the filter over a clean cloth to displace remaining fuel, and use the cloth to wipe away any residue from the filter's exterior.
Now, hold the filter at a safe distance from your face and look through one end. You should be able to see light shining clearly through the other side. If you cannot see light shining through, or if you notice debris clogging the mesh screen, the filter needs to be replaced. For canister-style filters, examine the transparent plastic casing and the pleated material inside for debris or severe discolouration. Tube-style filters should be inspected by looking closely at the meshed end for dirt or debris.
If your filter is dirty or clogged, it should be replaced. Alternatively, some tube-style filters can be carefully rinsed with water and reused if they are not severely clogged. However, it is recommended to replace fuel filters annually, even if they appear clean, as part of regular mower maintenance.
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Install the new fuel filter
Before installing a new fuel filter, it is important to ensure that you have purchased the correct replacement filter for your engine. The fuel filter for your riding mower may be located inside the fuel tank or fitted into the fuel line between the tank and the fuel pump. Consult your operator's manual to determine the location of your fuel filter and the correct replacement part.
Once you have identified the correct replacement filter, you can proceed with the installation. If your fuel filter is installed inside the tank, you will need to drain the tank completely before removing the old filter. If your fuel filter is installed in the fuel line, simply remove the metal clips on each side of the filter using needle-nose pliers and slide the filter out.
When installing the new fuel filter, be sure to follow the correct installation direction. Some filters have a direction of flow arrow on the casing, indicating the direction of fuel flow. For canister-style filters, push the ends of the fuel line segments onto the spigots of the filter and secure them with spring clips. For tube-style filters, simply pop the new filter into the fuel line, ensuring that it is oriented in the same way as the old filter.
Finally, reconnect any disconnected components, such as the spark plug wire, and lower the tractor hood. Be sure to check for leaks before operating your riding mower. If leaks are found, do not operate the mower and seek further assistance if necessary.
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Frequently asked questions
If your riding mower is showing signs of decreased performance or difficulty starting, you should check the fuel filter. To do this, keep the filter at a safe distance from your face and look through one end—if you can't see light shining through from the other side, it may be clogged and need replacing.
First, make sure you are in a safe, well-ventilated area with no open flames. Then, drain the gas from the tank or run the mower dry outside. Disconnect the wire from the spark plug and locate the fuel line. Use pliers to release the spring clips holding the line to the gas tank spigot and filter, then pull the fuel line off the spigot and remove the filter. Replace the old filter with a new one, reconnecting the metal clips on both sides.
It's important to wear safety eyewear when removing or inspecting a filter, to protect your eyes from liquid fuel or fuel vapors. You should also have a dry cloth handy to hold the filter and catch any dripping fuel. If your filter is installed inside the tank, you will need to drain the tank before removing the filter.
