Kubota B7500 Parts and Parts Manual PDF

Kubota B7500 parts

The Kubota B7500 is a versatile and reliable compact tractor that is widely used in various agricultural and landscaping applications.

To keep your Kubota B7500 running smoothly, it’s essential to have a good understanding of its parts and their functions.

In this post, we explore the various parts of the Kubota B7500, including its engine, steering, loader, HSD, hitch, front axle, and safety switch replacement parts.

Here is a list of some of the most common Kubota B7500 parts:

Engine parts: pistons, rings, bearings, gaskets, seals, filters, etc.
Steering parts: steering wheel, tie rods, ball joints, etc.
Loader parts: bucket, lift arms, cylinders, etc.
HSD parts: hydrostatic transmission pump, motor, lines, etc.
Hitch parts: drawbar, lift arms, pins, etc.
Safety switch replacement parts: seat switch, PTO switch, etc.
Front axle parts: spindles, bearings, seals, etc.

We will also discuss common problems, attachments, and provide a detailed parts list and diagram.

Kubota B7500 Parts Manual and Parts List

A parts manual is an essential tool for any Kubota B7500 owner or operator. It provides detailed information about the tractor’s various components, including part numbers, exploded diagrams, and breakdowns.

You can find a comprehensive parts manual for the Kubota B7500 in PDF format on the KubotaBooks website

This manual will help you identify the correct parts for your tractor and assist you in performing maintenance and repairs.

Kubota B7500 Engine Parts

The engine is the heart of any tractor, and the Kubota B7500 is no exception. It is equipped with a reliable and powerful three-cylinder diesel engine. Some of the key engine parts for the Kubota B7500 include:

Crankcase
Oil pan
Cylinder head
Gear case
Head cover

Common Kubota B7500 engine problems include:

Engine overheating: This can be caused by a low coolant level, a clogged radiator, or a damaged thermostat.
Engine oil consumption: This can be caused by worn piston rings or valve seals.
Engine power loss: This can be caused by a clogged air filter, a dirty fuel filter, or a worn fuel injector.

Kubota B7500 Steering Parts

The steering system of the Kubota B7500 is responsible for controlling the direction of the tractor. It consists of various components, including the steering wheel, steering column, and tie rods. If you are experiencing steering issues with your B7500, you may need to check and replace the following parts:

Steering wheel
Steering column
Tie rods

Common Kubota B7500 steering problems include:

Loose steering: This can be caused by worn tie rods, ball joints, or steering gearbox.
Hard steering: This can be caused by low hydraulic fluid levels, a clogged hydraulic filter, or a damaged hydraulic pump.
Steering wheel vibration: This can be caused by worn tie rods, ball joints, or steering gearbox.

Kubota B7500 Loader Parts

The Kubota B7500 can be equipped with a front-end loader, which is a valuable attachment for various tasks, such as moving and lifting heavy objects. Some of the key loader parts for the Kubota B7500 include:

Loader arms
Bucket
Hydraulic cylinders
Control valves

Kubota B7500 HSD Parts

The Kubota B7500 is available in both hydrostatic (HSD) and manual transmission models. The HSD model offers smooth and effortless operation, making it ideal for tasks that require frequent speed and direction changes. Some of the key HSD parts for the Kubota B7500 include:

Hydrostatic transmission
HSD control lever
HSD pump

Kubota B7500 Hitch Parts

The hitch system of the Kubota B7500 allows you to attach and detach various implements, such as mowers, tillers, and blades. Some of the key hitch parts for the Kubota B7500 include:

Three-point hitch
Hitch arms
Top link
Stabilizer bars

Kubota B7500 Safety Switch Replacement Parts

Safety switches are crucial for ensuring the safe operation of your Kubota B7500. If you are experiencing issues with your safety switches, you may need to check and replace the following parts:

Seat switch
PTO switch
Neutral safety switch

Kubota B7500 Front Axle Parts

The front axle of the Kubota B7500 is responsible for supporting the weight of the tractor and providing steering capabilities. Some of the key front axle parts for the Kubota B7500 include:

Front axle housing
Front axle support
Front wheel hubs
Front wheel bearings

Kubota B7500 Specs

Here are some key specifications for the Kubota B7500:

Engine: Three-cylinder diesel
Horsepower: 21.5
PTO Power: 17.5
Transmission: Hydrostatic or manual
Weight: 1,543 lbs (700 kg)
Length: 98.4 inches (2,500 mm)
Width: 45.3 inches (1,150 mm)
Height: 77.2 inches (1,960 mm)

To better understand the parts and components of the Kubota B7500, let’s take a closer look at the tractor’s specifications. Knowing the specifications can help you identify which parts are crucial for your specific needs.

Kubota B7500 Engine Specifications

Engine Type: Kubota D950-DI-2-CR-E4
Engine Displacement: 0.898 liters (54.8 cubic inches)
Engine Power: 21 horsepower (HP)
Fuel Type: Diesel
Cooling System: Liquid-cooled

Kubota B7500 Transmission

Transmission Type: Hydrostatic
Number of Speeds: Infinite (Hydrostatic)
Clutch: N/A (Hydrostatic)

Kubota B7500 Dimensions

Length: 101.6 inches (8.5 feet)
Width: 45.9 inches (3.8 feet)
Height (ROPS): 78.4 inches (6.5 feet)
Weight: Approximately 1,610 lbs (without attachments)

Kubota B7500 PTO

PTO Type: Independent
PTO Power: 17 HP (approximately)
PTO Speed: 540 RPM (rear)

Kubota B7500 Hydraulics

Hydraulic Capacity: 3.9 gallons (approximately)
Hydraulic System Type: Open Center
Maximum Hydraulic Flow: 6.3 GPM

Kubota B7500 Problems

While the Kubota B7500 is a reliable tractor, it may experience some common issues over time. Here are a few problems that B7500 owners have reported:

Starter motor issues: Some users have experienced problems with the starter motor failing to engage or turning slowly. This issue can often be resolved by cleaning or replacing the starter motor.
Hydraulic system leaks: Leaks in the hydraulic system can cause a loss of power and performance. Check the hydraulic lines, fittings, and seals for any signs of leakage and repair as necessary.
Electrical system issues: Some users have reported problems with the electrical system, such as blown fuses or malfunctioning switches. Check the wiring, connections, and switches for any signs of damage and repair as necessary.

Kubota B7500 Attachments

The Kubota B7500 can be equipped with various attachments to enhance its versatility and productivity. Some popular attachments for the B7500 include:

Front-end loader: A front-end loader allows you to move and lift heavy objects with ease.
Backhoe: A backhoe attachment is ideal for digging trenches, removing stumps, and other excavation tasks.
Mower: A mower attachment allows you to maintain your lawn or field with ease.
Tiller: A tiller attachment is perfect for preparing soil for planting or mixing in compost and fertilizer.

Kubota B7500 Parts List and Diagram

For a detailed parts list and diagram of the Kubota B7500, you can refer to the following resources:

Parts list catalog Kubota B7500

This PDF document provides a comprehensive list of parts for the Kubota B7500, including part numbers and descriptions.
Kubota B7500HSD (Hydrostatic Transmission, 4wd) Parts Diagrams

This website offers detailed parts diagrams for the Kubota B7500 HSD model, allowing you to identify and order the correct parts for your tractor.
Kubota B7500D (4wd) Parts Diagrams

This website offers detailed parts diagrams for the Kubota B7500D model, allowing you to identify and order the correct parts for your tractor.
Kubota B7500D Tractor Master Parts Manual Download

This factory Kubota B7500D parts manual provides detailed parts information, exploded diagrams, and breakdowns of all part numbers for all aspects of the tractor.

Common Kubota B7500 Problems

Like any piece of machinery, the Kubota B7500 may experience common issues that tractor owners should be aware of. Here are some typical problems and their potential solutions:

Engine Starting Issues: If the engine doesn’t start, check the battery, ignition switch, and wiring connections. Ensure the fuel system is clean and free of debris.
Hydrostatic Transmission Problems: If you experience difficulties with the hydrostatic transmission, it could be due to low hydraulic fluid, worn-out filters, or damaged HSD components.
Overheating: Overheating can result from a clogged radiator, damaged cooling fan, or low coolant levels. Regularly clean the radiator and maintain proper coolant levels.
Steering Difficulties: If steering becomes stiff or unresponsive, inspect the steering components, including the steering wheel, column, and tie rods. Lubricate or replace parts as needed.
Electrical Issues: Electrical problems may arise from damaged wiring, fuses.

Kubota B7500 loader lift capacity

The Kubota B7500 compact utility tractor is equipped with a Kubota LA302 loader, which has a maximum lift capacity to the maximum height of 770 lbs (350 kg)

Another source states that the breakout force (lift) is 454 kg (1,005 lbs), and the lift to full height (at the pin) is 310 kg (685 lbs) .The rear lift capacity of the Kubota B7500 is 1,356 lbs (615 kg) at the ends of the lift arms.

However, it is important to note that the lift capacity of a loader can vary depending on a number of factors, including:

The type of loader attachment being used
The distance that the load is being lifted
The angle at which the loader is being raised
The stability of the tractor

It is also important to never overload a loader, as this can damage the loader and tractor, and create a safety hazard.

Kubota B7500 Hydraulic Fluid Check

Checking the hydraulic fluid level in your Kubota B7500 tractor is an important part of regular maintenance to ensure that your tractor’s hydraulic system functions properly. Here are the steps to check the hydraulic fluid level:

Note: Before you begin, make sure the tractor is on a level surface, and the engine is turned off to ensure safety.

Locate the Hydraulic Fluid Reservoir: The hydraulic fluid reservoir or tank is typically located on the rear of the tractor. It is a large tank with a filler cap or dipstick on top.
Clean the Area: Use a rag or paper towel to clean the area around the filler cap or dipstick. This prevents any dirt or debris from falling into the hydraulic system when you open it.
Remove the Filler Cap or Dipstick: Depending on your tractor’s configuration, you will either have a filler cap that needs to be unscrewed or a dipstick that needs to be pulled out.
Check the Fluid Level. Using a Dipstick: If your tractor has a dipstick, wipe it clean with a rag, reinsert it fully into the reservoir, and then pull it out again. The fluid level should be between the “Full” and “Add” marks on the dipstick. If it’s below the “Add” mark, you’ll need to add hydraulic fluid.Using a Filler Cap: If your tractor has a filler cap, you will need to look inside the reservoir to check the fluid level. Shine a flashlight into the reservoir to see the fluid level. It should be close to the top of the reservoir. If it’s significantly below the top, you’ll need to add hydraulic fluid.
Add Hydraulic Fluid. If you need to add hydraulic fluid, use a funnel to avoid spills. Pour hydraulic fluid into the reservoir slowly.Check the fluid level again using the dipstick or by looking into the reservoir, and add more fluid if necessary.
Secure the Filler Cap or Dipstick: After adding fluid, securely reattach the filler cap or reinsert the dipstick. Make sure it is tightly sealed to prevent any contaminants from getting into the hydraulic system.
Check for Leaks: It’s also a good idea to inspect the hydraulic system for any visible leaks while you’re in the area. If you notice any leaks, address them promptly.
Record the Maintenance: Keep a record of when you checked the hydraulic fluid level and whether you added any fluid. This will help you maintain a regular maintenance schedule for your tractor.

Remember that it’s essential to use the recommended type of hydraulic fluid for your Kubota B7500, as specified in the tractor’s operator’s manual.

Using the correct hydraulic fluid ensures the proper functioning of the hydraulic system and helps maintain the longevity of your tractor.

If you’re unsure about which hydraulic fluid to use or have any concerns, consult your tractor’s manual or contact a Kubota dealer for guidance.

Here are some additional tips for checking and maintaining the hydraulic fluid in your Kubota B7500 tractor:

Use only high-quality hydraulic fluid that is recommended by Kubota.
Change the hydraulic fluid every 1,000 hours of operation, or more often if you are using the tractor in dusty or dirty conditions.
Inspect the hydraulic fluid for discoloration or signs of contamination. If the fluid is discolored or contaminated, change it immediately.
Keep the hydraulic fluid reservoir clean and free of debris.

Kubota B7500 Tire Size

The tire sizes for the Kubota B7500 tractor vary depending on the specific model and configuration. Here are some of the tire sizes mentioned in the search results:

Ag front: 6-12
Ag rear: 9.5-16
Front: 23-8.50-12
Rear: 12-16.5
Rear turf tires: 31 x 13.5 15 NHS
Front turf tires: 23 x 8.5 12 NHA

Here are some things to consider when choosing tire sizes for your Kubota B7500 tractor:

The type of terrain that you will be using the tractor on. If you will be using the tractor on rough or muddy terrain, you may want to choose larger tires with more aggressive tread patterns.
The weight of the tractor and any attachments that you will be using. Larger tires can support more weight, but they can also be more expensive and have a greater impact on fuel efficiency.
The speed that you will be driving the tractor. Larger tires can handle higher speeds, but they can also be more noisy and have a rougher ride.

Kubota B7500 Tractor Head Bolt Torque

The Kubota B7500 tractor head bolt torque is 48 foot-pounds (66 Nm). This means that you should tighten each head bolt to 48 foot-pounds of torque.

It is important to follow the correct head bolt torque specifications when tightening the head bolts on your Kubota B7500 tractor. Overtightening the head bolts can damage the engine block and cylinder head, while undertightening the head bolts can lead to leaks and other problems.

Here are the steps for tightening the head bolts on a Kubota B7500 tractor:

Clean the threads of the head bolts and cylinder head holes.
Apply a thin coat of clean engine oil to the threads of the head bolts.
Tighten the head bolts to the specified torque in the following sequence:
```
1 - 11 - 2 - 10 - 3 - 9 - 4 - 8 - 5 - 7 - 6
```
Tighten the head bolts to the specified torque again in the same sequence.
Install the cylinder head cover and torque the bolts to the specified torque.

If you are not comfortable tightening the head bolts yourself, please take your tractor to a qualified dealer.

Here are some additional tips for tightening the head bolts on your Kubota B7500 tractor:

Use a torque wrench to ensure that you are tightening the head bolts to the correct torque.
Tighten the head bolts in the correct sequence.
Avoid overtightening the head bolts.

More detailed guide to properly torque the head bolts on a Kubota B7500 tractor, follow these steps:

Gather the necessary tools and materials:
- Torque wrench
- Socket set
- Lubricant (if specified by the manufacturer)
Identify the correct torque specifications:
- Consult the tractor’s user manual or contact a Kubota dealer for the specific head bolt torque for the B7500 model. Unfortunately, there is no freely available source for the B7500 torque specs
Prepare the engine:
- Ensure that the engine is cool and turned off.
- Remove any components that may obstruct access to the head bolts, such as the air cleaner assembly or exhaust manifold.
Loosen the head bolts:
- Start from the center and work your way out in a crisscross pattern to gradually release the tension on the head bolts
Clean the bolt threads and bolt holes:
- Use a wire brush or a suitable cleaning tool to remove any dirt, debris, or old thread sealant from the bolt threads and bolt holes.
Apply lubricant (if specified):
- If the manufacturer recommends using a lubricant on the bolt threads, apply a small amount of the specified lubricant to the threads before installation.
Tighten the head bolts:
- Start from the center and work your way out in a crisscross pattern, gradually increasing the torque to the specified value.
- If the specified torque is given in multiple steps, follow the sequence and torque values provided, ensuring that each bolt is tightened to the correct specification.
Recheck the torque:
- After the initial tightening, go back and recheck the torque on each head bolt to ensure that it is still within the specified range.
Reassemble the engine:
- Once the head bolts are properly torqued, reassemble any components that were removed to access the head bolts.
Test the tractor:
- Start the engine and let it run for a few minutes to ensure that it is operating properly. Check for any signs of leaks or abnormal engine noise.