Kubota L4400 Parts and Parts Manual PDF

Kubota L4400 Parts

The Kubota L4400 is a 45.3HP tractor with an engine displacement of 2,197cc and a weight of 1,430KG. It is known for its exceptional power, stability, and suitability for general chores, snowplowing, and firewood harvesting.

Some owners have recommended purchasing this tractor for its four-wheel drive, front end loader, and hydrostatic transmission, which allows for quick switching from forward to reverse.

However, there have been reports about the tractor’s attachments not being up to the job, such as the front end loader being a little underpowered. Overall, the Kubota L4400 is a popular choice for those in need of a powerful and versatile tractor.

Below is a summary of its main specs:

Engine: Kubota V2203, 4-cylinder, 2197cc
Gross hp: 45.3 hp
Nett hp: 43 hp
PTO hp: 37.5 hp
8 forward and 4 reverse gears
Travel speeds (ag types): 1.7 Km/h – 21 Km/h
2WD gear: 3301 lbs
4WD gear: 3153 lbs to 3307 lbs
Fuel capacity: 11.3 gallons (42.8 liters)
Hydraulic system capacity:
Gear Hydraulic system: 10.6 gallons (40.1 liters)
Hydro Hydraulic system: 11.9 gallons (45.0 liters)
Other features:
Wheelbase: 72.6 to 72.8 inches
Front tire: 7.5L-15
Rear tire: 14.9-24
Differential lock: rear standard
Steering: power
Brakes: wet disc
Transmission details: 8-speed constant mesh

Common Parts that normally need replacing

The Kubota L4400 may require replacement parts such as air conditioning, clutch, transmission, PTO, electrical components, gauges, lights, radiator, cooling system, rims, wheels, hubs, sheet metal, body parts, air filters, blades, fuel filters, oil filters, seats, and cab interiors

Additionally, specific parts like the main gear-shaft, main switch, key, manifold gasket, cylinder head kit, lever grip, grille guard, PTO clutch disk brake, fan belt, and oil pump assembly may also need replacement.

Kubota Parts Manual PDF

You can find the parts manual for the Kubota L4400 in PDF format on various websites. Websites such as Jensales, Lift Parts Warehouse, and Messicks offer parts lists and diagrams for the Kubota L4400, including details on air conditioning, clutch, transmission, PTO, electrical components, gauges, lights, radiator, cooling system, rims, wheels, hubs, and other essential parts.

Additionally, a parts manual for the Kubota L4400 is available for purchase on the Messicks website. Furthermore, a PDF version of the illustrated parts list for the Kubota L4400 can be found on Scribd.

Manual Sections

The parts manual for the Kubota L4400 typically includes the following main sections:

Engine Components: This section covers parts related to the engine, such as filters, oil, and other engine-specific components.
Transmission and Clutch: It includes details about the transmission oil filter, transmission fluid, and other clutch-related parts.
PTO (Power Take-Off): This section lists the parts related to the power take-off system.
Electrical System: It covers various electrical components, gauges, lights, and related parts.
Radiator and Cooling System: This section includes parts related to the radiator, cooling system, and fan belt.
Wheels and Hubs: It encompasses rims, wheels, hubs, and other related parts.
Air Conditioning (if applicable): This section is specific to tractors equipped with air conditioning and includes relevant parts.
kubota l4400 front end parts

The front end parts for the Kubota L4400 include components such as the front axle, steering, and related elements.

These parts are essential for the proper functioning of the tractor’s front end. Some of the specific parts available for the Kubota L4400’s front end include the tie rod end boots, dust cover, clip, front crown and pinion bevel gear, and other steering and axle components.

These parts are crucial for maintaining the tractor’s steering and front axle system.

Kubota l4400 Parts Hydraulic Lines Front End Loader

The hydraulic lines for the front end loader of the Kubota L4400 are essential for the operation of the loader. These lines are responsible for transmitting hydraulic fluid to power the loader’s various functions.

You can find specific parts and diagrams for the hydraulic lines of the front end loader on the Messicks website, which provides detailed parts diagrams for the Kubota LA703 front loader, including the hydraulic tubes.

Additionally, resources such as eBay offer specific hydraulic hoses for the front loader of the Kubota “LA Series” tractors.

Furthermore, user experiences shared on platforms like JustAnswer provide insights into the replacement of hydraulic hoses for the front end loader of the Kubota L4400

Kubota l4400 Front Axle Parts

Specific front axle parts available for the Kubota L4400 include front axle seals, steering components, and related parts. These parts can be found on various platforms such as Amazon, All States Ag Parts, and Jensales.

Specific front axle parts available for the Kubota L4400 include front axle seals, steering components, bevel gear cases, bearings, shims, shafts, gears, tie rod end boots, dust covers, clips, and axle covers.

These parts are essential for the maintenance and repair of the front axle assembly of the Kubota L4400.

Kubota L4400 High Range Transmission Problems

If you’re experiencing high-range transmission problems with your Kubota L4400 tractor, there are several potential causes and troubleshooting steps you can take:

Fluid Levels and Condition: Check the transmission fluid levels. Low fluid levels can lead to poor transmission performance.
Ensure the fluid is at the correct specification and is not contaminated. Dirty or degraded fluid can affect the transmission’s operation.
Linkage and Controls: Inspect the transmission control linkage for any damage or misalignment.
Check for any obstructions or debris that may be affecting the linkage or controls.
Clutch Adjustment: Ensure that the clutch is properly adjusted. An improperly adjusted clutch can result in difficulty shifting gears.
Transmission Filter If your tractor is equipped with a transmission filter, check and replace it if necessary. A clogged filter can impede fluid flow and affect transmission performance.
Hydraulic System: The high-range transmission on some tractors is hydraulic. Check the hydraulic system for any leaks or malfunctions that may be affecting performance.
Synchronization Issues High-range transmission problems can sometimes be related to synchronization issues. This may require professional diagnosis and adjustment.
Professional Inspection: If the troubleshooting steps above don’t resolve the issue, it’s advisable to seek the expertise of a qualified Kubota technician or service center. They have the diagnostic tools and knowledge to identify and address more complex transmission problems.

Common Transmission Problems

Common transmission problems with the Kubota L4400, as reported by owners, include issues with hard shifting in high/low/reverse gears, the tractor not moving in high gear despite idling up and pressing the pedal, and challenges in engaging or disengaging the transmission ranges smoothly when stopped. These issues can impact the tractor’s performance and may require adjustments or repairs.

Hard Shifting Issues on a Kubota L4400

To address hard shifting issues on the Kubota L4400, check the following :

Check Transmission Oil Level: Ensure that the transmission oil is at the correct level, as low oil levels can contribute to shifting difficulties
Clutch Adjustment: Verify the clutch adjustment according to the owner’s manual or service manual, as improper clutch adjustment can affect the shifting process
Output Shift Seal Replacement: If the tractor won’t move after replacing the output shift seal, it’s important to ensure that the seal and related components are installed correctly and functioning properly
Transmission Linkage Inspection: Inspect the transmission linkage for any issues that may affect the shifting process, such as binding or misalignment
Professional Service and Maintenance: If the above steps do not resolve the issue, seeking assistance from a qualified technician or authorized Kubota dealer for a comprehensive inspection and potential adjustments is recommended.

Kubota L4400 Oil Capacity

The oil capacity of the Kubota L4400 is 8 quarts (7.6 liters) for the engine. Additionally, for the transmission, the oil capacity is 42.4 quarts (40.1 liters) for the constant mesh transmission and 45.0 liters (11.9 US gal, 9.9 Imp. gal) for the hydrostatic transmission.

The Kubota L4400 uses 10W-30 engine oil for the engine, and UDT (Universal Dynamic Tractor) fluid for the hydraulic and transmission system. The recommended oil change interval for the Kubota L4400 is typically every 200 hours of operation.

Kubota L4400 Oil Filter

The oil filter for the Kubota L4400 is a vital component for maintaining the engine’s health. It is recommended to use a filter that is compatible with the Kubota L4400, such as the “Kubota Engine Oil Filter” designed for models including L4240, L4300, L4310, L4330, L4350, L4400, L45, L4600, and L46104.

Additionally, the “Kubota Filter Service Kit” is available, which includes the oil filter among other essential filters for the tractor. These filters can be found on various platforms such as Amazon, eBay, and specific parts retailers.

Kubota l4400 Fuel Filter

The Kubota L4400 uses a fuel filter assembly that is compatible with various models, including L4400, L45, L4600, L4610, L4630, L4740, L48, and L48501.
The fuel filter set assembly is a universal fit for most L-Series Kubota tractors, including the L44002.
Additionally, a fuel filter with O-rings compatible with the Kubota L4400DT is available for purchase. It is important to ensure that the fuel filter used is compatible with the specific model to maintain optimal performance.

Kubota l4400 Loader Lift Capacity

The lift capacity of the Kubota L4400 is as follows: The tractor has a lift capacity of 1300 kg (2866 lbs) at the lift points. The lift capacity at 500mm forward is 1053 kg (2321 lbs) The 3 Point Hitch Lift Capacity at 24 Inches is 2321.5 lb.
These specifications are important for understanding the tractor’s capabilities when using various attachments and implements.

The maximum lift height for the Kubota L4400 loader is approximately 2420 mm (95.3 inches) at the pivot pin. The lift capacity of the Kubota L4400 loader at the bucket pin is approximately 1818 lbs (824 kg) when lifted to full height at the pin.

Check Kubota l4400 Hydraulic Oil Level

The recommended hydraulic oil for the Kubota L4400 is UDT (Universal Dynamic Tractor) fluid. This fluid is suitable for the tractor’s hydraulic and transmission systems.

It is important to use the recommended hydraulic oil to ensure the proper functioning and longevity of the tractor.

To check the hydraulic oil level in the Kubota L4400, you can use the sight glass located on the hydraulic reservoir. The sight glass allows you to visually inspect the oil level.

Here are the general steps to check the hydraulic oil level:

Park the tractor on a level surface and engage the parking brake.
Locate the hydraulic reservoir, which is typically near the rear of the tractor.
Clean the area around the sight glass to ensure a clear view.
Check the oil level in the sight glass. The oil should be within the recommended range indicated by the sight glass.
If the oil level is low, you can add the appropriate hydraulic fluid, such as UDT (Universal Dynamic Tractor) fluid, to the reservoir. It’s important to use the recommended hydraulic fluid and maintain the oil level within the specified range to ensure proper operation of the hydraulic system.

Additionally, if you suspect a hydraulic leak, it’s advisable to inspect the system for any signs of leakage and address any issues promptly to prevent potential damage to the hydraulic system.


What is the fuel capacity of a Kubota l4400

The fuel capacity of the Kubota L4400 tractor is 11.3 gallons (42.8 liters), and runs on diesel.

What is the weight of a Kubota l4400

The weight of the Kubota L4400 tractor varies depending on the configuration.

:2WD gear: 3301 lbs (1497 kg)
4WD gear: 3153 lbs (1430 kg)
4WD with Hydro: 3307 lbs (1500 kg)
These specifications indicate that the weight of the Kubota L4400 tractor ranges from approximately 3153 lbs (1430 kg) to 3307 lbs (1500 kg) depending on the specific model and configuration.

What are the Main Safety Features of a Kubota l4400

The main safety features include :

ROPS (Roll-Over Protective Structure): ROPS is a structure designed to protect the operator in the event of a rollover. It provides a protective frame around the operator’s seat to prevent injury in case of an accident.
Seatbelt: Tractors typically come with seatbelts to keep the operator securely in the seat during operation. It is essential to use the seatbelt at all times for maximum safety.
Operator Presence System: Some tractors have an operator presence system that requires the operator to be seated and the seatbelt fastened for the tractor to operate. This helps prevent accidental movement when the operator is not in control.
Safety Labels and Instructions: Tractors are equipped with safety labels and instructions to guide operators on proper usage, potential hazards, and safety precautions.
Well-Positioned Controls: Controls are typically designed and positioned to be easily reachable and operable by the operator while maintaining a secure position within the seat.
Emergency Stop Function: Tractors may have an emergency stop function or button that can quickly shut down the engine in case of an emergency.
Lights and Mirrors: Proper lighting and mirrors contribute to overall visibility, helping operators see and be seen, especially during low-light conditions.
PTO (Power Take-Off) Safety: Tractors often have safety features related to the power take-off, including shields and engagement mechanisms designed to prevent accidental engagement or entanglement.
Hydraulic System Safety: Safety features related to the hydraulic system, such as pressure relief valves, help prevent hydraulic system failures and reduce the risk of injury.
Slow Moving Vehicle (SMV) Sign: Tractors may come with an SMV sign to indicate to other road users that the tractor is a slow-moving vehicle.

How to Replace Front Axle Seal on a Kubota l4400

Replacing the front axle seal on a Kubota L4400 involves a series of steps:

Tools and Materials:

  1. Socket set
  2. Wrenches
  3. Screwdrivers
  4. Pry bar
  5. Hammer
  6. Seal puller or pick
  7. New front axle seal
  8. Lubricating oil or grease
  9. Hydraulic jack and jack stands


  1. Safety First:
    • Ensure the tractor is on a level surface and engage the parking brake. For added safety, you may want to block the rear wheels.
  2. Lift the Front of the Tractor:
    • Use a hydraulic jack to lift the front of the tractor, and secure it with jack stands. Make sure it is stable before proceeding.
  3. Remove the Front Wheel:
    • Using a suitable wrench or socket, remove the lug nuts and take off the front wheel to access the front axle components.
  4. Locate the Axle Seal:
    • Identify the front axle seal. It is typically located on the front axle housing near the wheel.
  5. Remove the Axle Nut:
    • Depending on the model, there may be a nut securing the axle. Use the appropriate tools to remove this nut.
  6. Remove the Axle Shaft:
    • With the axle nut removed, carefully slide the axle shaft out from the axle housing. You may need to gently tap it with a soft-faced hammer to free it.
  7. Remove the Old Seal:
    • Use a seal puller or pick to carefully remove the old front axle seal from its housing. Take care not to damage the axle housing during this process.
  8. Clean the Area:
    • Clean the area around the axle housing thoroughly, removing any dirt, debris, or old lubricant.
  9. Install the New Seal:
    • Apply a small amount of lubricating oil or grease to the new front axle seal’s inner lip. Carefully press the new seal into place, ensuring it is seated evenly.
  10. Reinstall the Axle Shaft:
    • Slide the axle shaft back into the axle housing, making sure it engages properly. If there was an axle nut, reinstall it and tighten it to the manufacturer’s specifications.
  11. Reinstall the Front Wheel:
    • Put the front wheel back on, hand-tighten the lug nuts, lower the tractor, and then securely tighten the lug nuts in a crisscross pattern.
  12. Check for Leaks:
    • Start the tractor and let it run for a few minutes. Check for any signs of leaks around the front axle seal.

How to Replace a light kit on a Kubota l4400 :

Replacing a light kit on a Kubota L4400 involves several steps :

Tools and Materials:

  1. Screwdriver or wrenches
  2. Wire strippers and crimping tool
  3. Electrical tape or heat shrink tubing
  4. Replacement light kit
  5. Wiring connectors and heat shrink tubing (if not included with the kit)
  6. Safety glasses


  1. Safety First:
    • Ensure the tractor is on a level surface, engage the parking brake, and turn off the engine.
  2. Disconnect the Battery:
    • To ensure safety during the electrical work, disconnect the tractor’s battery to prevent any accidental electrical shorts.
  3. Remove the Old Lights:
    • Depending on the type of light kit, you may need to remove existing lights. This typically involves removing screws or bolts securing the lights to the tractor.
  4. Disconnect Wiring:
    • Carefully disconnect the wiring from the old lights. Note the color-coding or labeling of the wires to ease the installation of the new lights.
  5. Install the New Lights:
    • Position the new lights in the desired locations, and secure them in place using screws or bolts. Follow the manufacturer’s instructions for proper installation.
  6. Connect Wiring:
    • Connect the wiring of the new lights to the corresponding tractor wiring. If the new lights have different connectors than the old ones, you may need to use wiring connectors and heat shrink tubing to make secure connections.
  7. Secure Wiring:
    • Use zip ties or clips to secure the wiring along the tractor’s frame and prevent it from hanging loosely or getting entangled.
  8. Test the Lights:
    • Reconnect the tractor’s battery and turn on the lights to test their functionality. Ensure that all lights are working correctly.
  9. Securely Mount Lights:
    • Once you have confirmed that the lights are working, tighten any screws or bolts used to secure the lights in place.
  10. Clean Up:
    • Remove any tools and materials from the work area, and tidy up the workspace.
  11. Reconnect the Battery:
    • Reconnect the tractor’s battery, ensuring a secure and tight connection.
  12. Check for Proper Operation:
    • Turn on the tractor and check all the lights once again to ensure they are functioning properly.

How to install a block heater on a Kubota l4400 

Installing a block heater on a Kubota L4400 tractor is a relatively straightforward process, but it’s important to follow proper procedures to ensure a safe and effective installation :

Tools and Materials:

  1. Block heater kit (make sure it’s compatible with your Kubota L4400)
  2. Wrenches or socket set
  3. Teflon tape (optional)
  4. Coolant (if draining is required)


  1. Read the Instructions:
    • Before starting, carefully read and understand the manufacturer’s instructions provided with the block heater kit.
  2. Locate a Suitable Location:
    • Choose a suitable location on the engine block to install the block heater. Refer to the kit’s instructions for specific recommendations. The location should be easily accessible and allow for proper installation.
  3. Drain Coolant (if necessary):
    • If the chosen installation location requires draining the coolant, follow your tractor’s service manual instructions for draining coolant. Ensure the engine is cool before attempting to drain coolant.
  4. Prepare the Block Heater:
    • If the block heater requires any assembly or preparation, do it according to the kit instructions. Some block heaters may come pre-assembled.
  5. Apply Teflon Tape (if necessary):
    • If the threads on the block heater require sealing, apply Teflon tape to the threads. This is typically necessary if the block heater screws into a coolant passage.
  6. Install the Block Heater:
    • Thread the block heater into the chosen location on the engine block. Use wrenches or a socket set to tighten it securely. Be cautious not to overtighten to avoid damaging the threads.
  7. Connect the Power Cord:
    • Route the power cord of the block heater to a location where it can be safely connected to a power source. Ensure the cord is secured and won’t come into contact with hot or moving engine components.
  8. Secure the Power Cord:
    • Use zip ties or clips to secure the power cord along the tractor’s frame, keeping it tidy and preventing it from hanging loosely.
  9. Connect to Power Source:
    • Plug the block heater’s power cord into an appropriate power source. If you are using an extension cord, ensure it is of the correct gauge and length for the application.
  10. Test the Block Heater:
    • Turn on the block heater and allow it to operate for a few minutes. Check for any signs of overheating or issues.
  11. Refill Coolant (if drained):
    • If coolant was drained, refill the cooling system according to your tractor’s service manual.
  12. Inspect for Leaks:
    • After the tractor has run for a while, inspect the installation area for any signs of coolant leaks.