
Kubota tractors are renowned for their thorough fuel system protection scheme, which sees the fuel filtered both before and after the electric fuel pump. The fuel filter's location is, therefore, an important consideration for owners of Kubota BX25D tractors. The fuel filter can be found underneath the tractor, with some sources stating that it is located beneath the skid plate. One source states that the filter is located on the left of the tractor.
| Characteristics | Values |
|---|---|
| Fuel filter location | Underneath the tractor |
| Number of filters | 2 (one in the front, one in the back) |
| Filter placement | Before and after the electric fuel pump |
| Filter direction | Indicated by arrows on the filter |
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What You'll Learn

The fuel filter is located underneath the BX25D
Once the deck has been removed, you will need to open up the hood to gain access to the engine compartment. To do this, simply release the hood and lift it up. On the 70 series, you will also need to remove the lower panel by loosening the two thumb screws on either side.
The BX25D has two fuel filters. The first is located underneath the skid plate, and the second is located next to the engine, by the injection pump inside the hood. This second filter can be easily accessed and replaced.
It is important to regularly replace the fuel filters, as per the operator's manual, due to new emissions and fuel standards.
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BX25D has two fuel filters
The BX25D has two fuel filters. The first is located underneath the tractor, under the skid plate. This is the primary filter, which is brass in colour. The second filter is located inside the engine compartment, next to the injection pump. This filter is insurance in case the electric fuel pump fails, as it prevents debris from damaging the fuel injector pump.
The Kubota BX-series Filter Kit includes two fuel filters, which are the same part, with one in the front and one in the back. The first is the lower fuel filter, which is underneath the chassis. The second is located next to the engine, inside the hood.
To access the filters, you will need to remove the mower deck and open the hood to gain access to the engine compartment. The BX25D's fuel filters will need to be replaced often, due to new emissions and fuel standards.
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The first filter is under the skid plate
The Kubota BX25D tractor has two fuel filters. The first filter is under the skid plate. To access this filter, you will need to remove the mower deck. Once the mower deck is removed, open up the hood to gain access to the engine compartment.
On the BX 70 series, you will need to remove the lower panel. This is held in place by two thumb screws, one on either side. Loosen these until the panel is loose, then gently pull it out and set it aside. With the hood open, you can now access the first fuel filter.
The first filter is located before the fuel pump, and its purpose is to protect the fuel pump by filtering the fuel before it reaches it. This filter should be replaced often due to new emissions and fuel standards. Refer to your operator's manual for the recommended replacement intervals.
The second filter is located inside the engine compartment, before the injection pump. This filter acts as insurance in case the electric fuel pump fails, preventing debris from reaching and damaging the fuel injector pump.
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The second filter is inside a tunnel underneath the chassis
The Kubota BX25D tractor has two fuel filters. The first is located under the skid plate, while the second filter is inside a tunnel underneath the chassis. This second filter is easily accessible and can be found by laying down and looking up inside the tunnel. It is located right next to the engine, by the injection pump.
The fuel filter system in the Kubota BX25D is designed to protect the fuel injector pump, which is the most precise and expensive device to repair on a diesel engine. By placing a filter before the fuel pump and another before the injector pump, the fuel is thoroughly cleaned, and the injector pump is protected from debris in case the electric fuel pump fails.
Regular maintenance of the fuel filters is important to ensure the smooth operation of the tractor and to prevent issues such as coughing, spitting, and sudden shutdowns. It is recommended to refer to the operator's manual for guidance on how often the filters should be replaced.
The fuel filters are considered one of the cheapest replacement maintenance items for the Kubota BX25D tractor.
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The filter can be replaced with an in-line fuel filter
The Kubota BX25D tractor has two fuel filters. The first is located underneath the tractor, under the skid plate, while the second is located inside the engine compartment, next to the injection pump.
When replacing the fuel filter, it is important to first remove the mower deck to access the lower fuel filter and hydraulic filter. Then, open the hood to gain access to the engine compartment. The in-line fuel filters can be installed by following the directions on the filter for fluid flow. It is important to ensure that the clamps are secure and that the bolt can grab the welded nut on the filter ring.
It is worth noting that some users have reported that the outside diameter of the fuel filter canister may be slightly too big, requiring the clamps to be pinched or a zip tie to be used to hold the filter in place.
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Frequently asked questions
The fuel filter on a Kubota BX25D is located underneath the tractor.
To access the fuel filter, you need to first remove the mower deck. Then, open the hood to access the engine compartment.
Yes, there are two fuel filters on the Kubota BX25D. The first is located under the skid plate, and the second is located next to the engine, by the injection pump.
With today's fuel standards, you will need to replace the fuel filters often. Refer to your operator's manual for the recommended intervals.











































