
Fuel filters are essential components of any Craftsman riding mower, and replacing them is a common maintenance task. The size of the fuel filter depends on the specific model of the mower. For example, the Craftsman T240 riding mower requires a fuel filter replacement, and most small home-use gasoline engines use the same-sized fuel line. The Craftsman Riding Lawn Mower, model 917.252501, experiences issues with fuel not entering the filter. In addition, the Craftsman T240 mower may require a new fuel filter if it fails to start without starter fluid. The fuel filter size for this model is not explicitly mentioned, but users discuss potential solutions. The fuel filter size for a Craftsman mower with a Briggs & Stratton engine is also unclear, but a user mentions that the replacement kit includes two springs, while the old fuel filter has only one.
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What You'll Learn

Fuel filter replacement for Craftsman riding mower
A fuel filter replacement for a Craftsman riding mower is a relatively simple process, but it is important to follow the correct safety procedures and use the right tools. The fuel filter plays a critical role in preventing dirt and other particles in the fuel tank from reaching the carburettor, ensuring optimal engine performance.
Before beginning the replacement process, it is essential to park the tractor on a level surface in a well-ventilated area and engage the parking brake. Ensure that the ignition switch is turned off and remove the key. It is also important to note that some repairs may require a qualified technician, so it is advisable to consult a professional if you are unsure about any steps or have no experience with machine repairs.
The first step in replacing the fuel filter is to remove the old, clogged, or dirty filter. This step may vary depending on the specific model of your Craftsman riding mower, so it is recommended to refer to the manufacturer's instructions or seek guidance from a qualified technician. Once the old fuel filter has been successfully removed, it is important to install the new fuel filter correctly. Ensure that you use a manufacturer-approved lawn mower part that is compatible with your Craftsman model.
When installing the new fuel filter, pay attention to the direction in which it should be pointed. Additionally, ensure that you reconnect all necessary spark plug wires. If your engine has two cylinders, reconnect both spark plug wires. After completing the installation, lower the tractor hood.
By following these steps and guidelines, you can effectively replace the fuel filter on your Craftsman riding mower, ensuring optimal engine performance and preventing issues caused by clogged or dirty fuel filters. Remember to always prioritise safety and consult a qualified technician if you have any doubts or concerns during the replacement process.
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Fuel filter clogging and engine issues
A fuel filter's role is to strain impurities from the fuel before it enters the carburetor. When a fuel filter gets clogged, it can cause issues with your riding mower. These issues can range from simple annoyances, such as a sputtering sound when attempting to start the mower, to more serious problems, such as the mower not starting at all.
A clogged fuel filter can cause the mower to idle unevenly, experience a lack of power when mowing, or even fail to start. If left unaddressed, a clogged fuel filter can lead to long-term damage that may cost more to repair than purchasing a new mower. Therefore, it is recommended to replace the fuel filter after approximately 200 hours of use or as specified in the owner's manual.
Signs of a clogged fuel filter in a Craftsman T240 riding mower include difficulty starting when the engine is cold. In some cases, the mower may require starter fluid to start when cold but runs fine once the engine warms up. Replacing the fuel filter can help resolve this issue, especially if the existing one is old and dirty.
To prevent engine issues caused by a clogged fuel filter, it is important to maintain your riding mower properly. This includes regular service and maintenance checks, either by a professional or through DIY methods if you feel comfortable. Additionally, always refer to the owner's manual before performing any maintenance on your mower, and remember to disconnect the spark plug first for safety.
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Fuel filter size and compatibility
The fuel filter size and compatibility for a Craftsman riding mower depend on the model of the mower. For example, the Craftsman T240 riding mower uses a fuel filter with a 1/4-inch or 5/16-inch I.D. fuel line, which is a standard size for small home-use gasoline engines.
Craftsman riding mowers with Briggs & Stratton engines may use fuel filters with part numbers 4929325, 696854, or 951-3013. These fuel filters are also compatible with most gasoline engines with 1/4 inch or 5/16-inch I.D. fuel lines.
For older Craftsman riding mowers, such as the Scotts John Deere S1742 with a single-cylinder 17HP Intek engine, the manual recommends using the small disc-type fuel filter with no paper media, such as the AM38708. However, some users have reported successfully using larger inline fuel filters, such as the iFJF Motorcycle Craftsman Large Displacement fuel filter, as long as the exit to the carburetor is at the bottom to avoid sucking air.
When replacing the fuel filter on a Craftsman riding mower, it is important to ensure that the correct part is used for the specific engine model. In some cases, such as with the Craftsman T240, adjusting the throttle cable or choke position may also be necessary to resolve starting issues.
Additionally, some Craftsman riding mowers may have fuel pumps with two small springs, and it is important to ensure that both springs are installed correctly during replacement.
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Fuel filter installation
Fuel filters prevent dirt and other particles in the fuel tank from reaching the carburettor. Clogged or dirty fuel filters don't allow enough fuel to reach the carburettor, resulting in an engine that runs rough or stops running completely.
Craftsman riding mowers use replacement fuel filters for CRAFTSMAN®, Briggs and Stratton®, Kohler®, Tecumseh, Honda, Kawasaki®, and most gasoline engines with a 1/4 inch or 5/16-inch I.D. Fuel Line using part #: 4929325, 696854, or 951-3013.
If your riding lawn mower’s engine runs rough or won't run, the fuel filter could be dirty. Here is a step-by-step guide on how to replace it:
- Install the new fuel filter.
- Reconnect the spark plug wire/s. If your engine has two cylinders, reconnect both spark plug wires.
- Lower the tractor hood.
Note: Undertaking repairs to lower lawn-care equipment 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.
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Fuel filter maintenance and repair
Fuel filters play a crucial role in the performance of your Craftsman riding mower by preventing dirt and other particles in the fuel tank from reaching the carburetor. When fuel filters become clogged or dirty, they can disrupt the flow of fuel to the carburetor, leading to engine problems such as rough running or complete engine shutdown.
To maintain optimal performance and avoid engine issues, it is essential to regularly inspect and replace your fuel filter. Craftsman riding mowers typically use fuel filters with a 1/4 inch or 5/16 inch I.D. fuel line, and replacement fuel filters can be found using part numbers 4929325, 696854, or 951-3013. These fuel filters are compatible with Craftsman, Briggs and Stratton, Kohler, Tecumseh, Honda, Kawasaki, and most other gasoline engines.
When replacing the fuel filter, it is important to follow safety guidelines and manufacturer instructions. Park your mower on a level surface in a well-ventilated area, engage the parking brake, and turn off the ignition before beginning any maintenance work. It is also crucial to use the proper tools and safety equipment during the repair process.
In addition to fuel filter maintenance, other routine tasks such as oil changes, spark plug replacements, and carburetor cleaning can help ensure the overall performance and longevity of your Craftsman riding mower. By staying proactive with these maintenance practices, you can minimize engine troubles and maximize the efficiency of your machine.
If you encounter specific issues with your Craftsman riding mower, such as difficulty starting a cold engine or inconsistent fuel flow, there are several troubleshooting steps you can take. Checking for a clogged carburetor, inspecting the spark plug for any issues, and ensuring proper valve lash can help identify and resolve potential problems. For more complex repairs or if you're unsure about a specific procedure, it is always recommended to consult a qualified technician for assistance.
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Frequently asked questions
The Craftsman T240 riding mower takes a fuel filter with a 1/4" nipple.
The part number for the fuel filter is 691035.
The Craftsman T240 riding mower takes a fuel line with a 1/4" or 5/16" I.D.
The part number for the fuel line is 4929325, 696854, or 951-3013.
Yes, you can use a larger fuel filter on your Craftsman T240 riding mower, but make sure the exit to the carb is at the bottom. If it sits horizontal or tipped exit up, you will suck air once in a while.































