
Kohler engines are used in lawn tractors and mowers, and fuel filters are necessary to keep dirt and debris out of the engine. Kohler offers a range of fuel filters for their engines, including the Kohler In-line Fuel Filter, which fits specific Command, K-Series, and Magnum Engines. Kohler also manufactures fuel filters for the Courage and 7000 Series engines. Some Kohler engines do not use a fuel pump and rely on gravity to feed gas to the carburetor, and the correct fuel filter for these engines is the 75-micron filter (part number 25-050-21 or 25-050-07).
| Characteristics | Values |
|---|---|
| Engine compatibility | Command CV11-CV16, K-Series K181-K341, KT17, KT19, and Magnum M8-M20 Engines |
| Function | Keeps dirt and debris out of the engine |
| Micron rating | 51 |
| Shell length | 2.13 inches |
| Inlet hose ID | 1/4 inch |
| Compatibility | Fuel pump-fed carburetors |
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What You'll Learn

Kohler fuel filters for Kohler Command, Courage and 7000 Series
Kohler fuel filters are necessary to keep dirt and debris out of the engine. They are also important for efficient fuel performance.
The Kohler In-line Engine Fuel Filter fits the following engines:
- Command CV11-CV16
- K-Series K181-K341
- KT17
- KT19
- Magnum M8-M20
The Kohler Lawn Mower Fuel Filter, with 51 microns and fuel pump-fed carburetors, is compatible with the Kohler Command, Courage and 7000 Series engines. This fuel filter has received positive reviews for its quality and long-lasting use.
When purchasing a fuel filter, it is important to consider the micron size and flow rate. For example, the Kohler engine with model number CV492S and specification 27506 uses a 50-micron filter designed for a fuel pump. On the other hand, the same engine may use a 75-micron filter designed for a gravity feed system.
Craftsman Kohler engines may experience fuel flow problems after changing the fuel filter. This issue can be resolved by ensuring the correct micron size is used based on the engine's fuel system.
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Kohler Command, K-Series and Magnum Engines
Kohler engines are used in Craftsman lawn tractors. Kohler engines also power some lawn mowers. Kohler offers a range of engines, including the Command, K-Series, and Magnum models.
The Kohler K-Series is a single-cylinder engine. The K341 or M16 blocks are in a class by themselves. The K321 or M14 block can be bored for the K341 or M16 piston, but this process may result in a thin cylinder wall or breakage. The K-Series engine model codes with a fourth digit of 5 or more indicate a Magnum engine.
The Kohler Magnum series was introduced in 1984 and features electronic ignition and an "advanced" air filtration system. The Magnum engine is an opposed twin-cylinder engine. The first two digits of the specification number indicate the engine model, while the next three numbers and letters indicate the specific variation of the engine.
The Kohler Command series offers a range of engine models, including the CV11-CV16, which are compatible with the Kohler In-line Engine Fuel Filter. This fuel filter is designed to keep dirt and debris out of the engine, ensuring efficient fuel performance. It is also compatible with the K-Series K181-K341, KT17, KT19, and Magnum M8-M20 engines.
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Kohler Command 11-16 HP Horizontal
The Kohler Command 11-16 HP Horizontal engine is used in a variety of power equipment, including Arien, Bolens, Cub Cadet, John Deere, and Wheel Horse. The specific fuel filter for this engine model is the FUEL FILTERS FITS MODELS FUEL FILTER INLET HOSE ID COMMAND 11-16 HP HORIZONTAL CH11 - CH16, with part number 25 050 21-S and a size of 3/16" & 1/4". This fuel filter is designed to fit the specific dimensions and requirements of the Kohler Command 11-16 HP Horizontal engine.
It is important to use the correct fuel filter for your engine to ensure proper fuel flow and engine performance. The fuel filter plays a critical role in removing contaminants and debris from the fuel before it enters the engine, helping to maintain fuel system cleanliness and engine reliability.
In addition to the fuel filter, it is also important to maintain other engine components, such as the air filter. Kohler offers original equipment air filters with pre-filters specifically designed for the Kohler Command 11-16 HP engines, ensuring proper air filtration and engine protection.
For more comprehensive information on the maintenance and repair of the Kohler Command 11-16 HP Horizontal engine, you can refer to the Kohler Command CH 11 12.5 13 14 15 16 HP Service Manual. This manual provides detailed instructions on how to take apart, repair, and reassemble your Kohler engine, covering a range of horsepower ratings within the Kohler Command series.
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Kohler Command 11-16 HP Vertical
The ROP Shop Fuel Pump Kit is compatible with the Kohler Command Vertical Engines 11-16 hp. The fuel filter inlet hose ID for the Kohler Command 11-16 HP Vertical is 25 050 07-S 3/16" & 1/4".
The ROP Shop Fuel Pump Kit is available on Amazon, with free delivery. However, one review states that the product was rendered useless due to the assembler misaligning the rubber diaphragm. The reviewer states that they are hoping the vendor will send a replacement. Another review on eBay states that the pump works great and is very low cost, but that there were no instructions included.
Kohler also offers an original equipment air filter with a pre-filter for the Kohler Command 11-16 HP Engines. This product is available at Home Depot and can be returned within 90 days of purchase.
There are also fuel pumps for the Kohler 11-16 hp Command Vertical Engines available on eBay.
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Craftsman Kohler fuel filter problems
A fuel filter is necessary to keep dirt and debris out of the engine of Craftsman Kohler lawn tractors. However, problems with fuel flow can occur, especially after changing the fuel filter.
One common issue is that the engine stalls after 20-30 minutes of use due to the filter appearing to run out of gas. This problem has been observed in Craftsman lawn tractors with Kohler engines, specifically the 917.272481 Craftsman LTX1000 model with a Kohler Pro 18HP engine (Model: CV492S Spec: 27506). The issue arises when using a replacement fuel filter with the part number 25-050-22 (or its older version, 25-050-03). This filter is designed for fuel pumps, providing extra pressure and has smaller 50-micron holes. However, the affected Craftsman Kohler engines use a gravity feed system without a fuel pump, relying on the gas tank being higher than the carburetor. As a result, the filter restricts fuel flow, leading to the engine stalling.
To resolve this issue, it is recommended to use a fuel filter with larger 75-micron holes, such as the one with the part number 25-050-21 (or its older version, 25-050-07). This filter is specifically designed for gravity feed systems and will ensure sufficient fuel flow to the engine.
Another issue observed in Craftsman Kohler lawn tractors is engine stalling when driving on an incline due to insufficient fuel reaching the carburetor. This problem has been reported in a 7-year-old Craftsman 42" 18hp Kohler Tractor. While replacing the fuel filter and cutting back on the fuel line temporarily resolved the issue, it continued to recur. It is suggested that the root cause may be a faulty fuel pump or the absence of one.
In some cases, issues with the fuel filter can be attributed to incorrect installation. For example, installing the filter backwards can restrict fuel flow and cause the engine to stall. Ensuring that the arrow on the filter is pointing away from the tank and towards the fuel pump is crucial for proper fuel flow.
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Frequently asked questions
The micron size for the Kohler Command engine is 51.
The fuel filter part number for a Kohler Command engine is 25-050-22. The original part number listed in the manual, 25-050-03, was a typo.
The shell length of the Kohler Command fuel filter is 2.13 inches.










































