B3350 Kubota Problems and Troubleshooting

The B3350 Kubota tractor is a reliable and versatile machine that offers exceptional performance for various agricultural tasks. However, like any mechanical equipment, it can experience problems over time. In this article, we will explore some common issues faced by B3350 Kubota owners and provide troubleshooting tips to help resolve them.


Owning a B3350 Kubota tractor can be a valuable asset for farmers and property owners. With its powerful engine, advanced transmission, and efficient hydraulic system, the B3350 is designed to handle a wide range of tasks with ease. However, even the most well-built machines can encounter problems, and it’s important to understand how to identify and resolve these issues promptly.

Overview of the B3350 Kubota Tractor

Before diving into the problems, let’s first get acquainted with the B3350 Kubota tractor. This compact utility tractor boasts a three-cylinder diesel engine, typically delivering around 33 horsepower. Its four-wheel drive capability ensures excellent traction in various terrains, making it suitable for both field work and landscaping projects. The B3350 is also equipped with a hydrostatic transmission, which allows for smooth and effortless gear shifting.

Common Problems Faced by B3350 Kubota Owners

Engine Problems


One of the most common engine-related issues reported by B3350 Kubota owners is overheating. This can occur due to a malfunctioning cooling system, clogged radiator, or low coolant levels. Signs of overheating include an increase in engine temperature gauge readings, steam emanating from the engine, or engine stalling. Regular maintenance and periodic checks of the cooling system can help prevent this problem.

Starting Issues

Another problem that can arise is difficulty starting the B3350 Kubota tractor. This could be caused by a faulty starter motor, weak battery, or fuel delivery issues. It’s crucial to ensure the battery is in good condition, the fuel lines are clear, and the glow plugs are working correctly. Performing regular inspections and addressing any starting issues promptly can save time and frustration.

Transmission Problems

Shifting Difficulties

Some B3350 Kubota owners may encounter shifting difficulties, where the tractor struggles to change gears smoothly or slips out of gear unexpectedly. This issue may arise due to a worn-out clutch, damaged gears, or problems with the shift linkage. Regular maintenance and proper operation techniques, such as clutch engagement practices, can help minimize transmission problems.

Clutch Troubles

A malfunctioning clutch can also be a cause for concern. Signs of clutch problems include slipping, grinding noises when shifting gears, or the inability to disengage the clutch fully. It’s essential to inspect the clutch system regularly, including the clutch pedal adjustment and hydraulic lines, to ensure optimal performance.

Hydraulic System Issues


Leaks in the hydraulic system can occur in B3350 Kubota tractors, leading to a loss of hydraulic fluid and compromised performance. Hydraulic leaks can be caused by damaged seals, cracked hoses, or faulty connections. Regularly inspecting the hydraulic system and promptly repairing any leaks can prevent further damage and ensure the tractor operates smoothly.

Loss of Power

B3350 Kubota owners may also experience a loss of power in the hydraulic system, resulting in reduced functionality of attachments and implements. Insufficient hydraulic fluid levels, a failing hydraulic pump, or clogged filters can contribute to this problem. Proper maintenance, such as regular fluid checks and filter replacements, can help maintain optimal hydraulic performance.

Troubleshooting Tips for B3350 Kubota Problems

To help B3350 Kubota owners resolve some of the common problems mentioned above, here are a few troubleshooting tips:

Engine Troubleshooting

  • Check the cooling system components for any signs of damage or leaks.
  • Ensure the radiator is clean and free from debris.
  • Verify that the coolant levels are within the recommended range.
  • Inspect the battery and starter motor for proper functioning.
  • Confirm that the fuel lines are clear and the fuel filters are clean.

Transmission Troubleshooting

  • Perform regular clutch inspections and adjustments.
  • Check the shift linkage for any signs of wear or misalignment.
  • Use proper clutch engagement techniques, such as avoiding abrupt changes in gear or excessive slipping.
  • If experiencing persistent shifting difficulties, consult a qualified technician for a thorough inspection.

Hydraulic System Troubleshooting

  • Inspect the hydraulic system for any visible leaks.
  • Check the hydraulic fluid levels and top up if necessary.
  • Replace damaged seals or hoses promptly.
  • Regularly clean or replace hydraulic filters to prevent clogging.
  • If encountering significant loss of power, consult an expert for a comprehensive hydraulic system assessment.

Maintenance Practices to Prevent Problems

To minimize the occurrence of problems with the B3350 Kubota tractor, implementing the following maintenance practices is highly recommended:

  • Adhere to the manufacturer’s recommended maintenance schedule.
  • Regularly inspect and clean the tractor’s key components, such as the engine, transmission, and hydraulic system.
  • Keep all fluids at the appropriate levels and ensure they are free from contaminants.
  • Lubricate moving parts as specified by the manufacturer.
  • Store the tractor in a clean and dry environment when not in use.


Q: What should I do if my B3350 Kubota tractor overheats?

A: First, stop the tractor and allow it to cool down. Check the coolant levels and inspect the cooling system components for any signs of damage or leaks. If the problem persists, consult a qualified technician.

Q: How often should I perform maintenance on my B3350 Kubota tractor?

A: It’s recommended to follow the manufacturer’s maintenance schedule, which typically includes regular inspections and service intervals based on operating hours or time intervals.

Q: Can I use aftermarket hydraulic fluids in my B3350 Kubota tractor?

A: It’s best to consult the manufacturer’s recommendations regarding hydraulic fluids. Using the recommended fluids ensures optimal performance and protects the tractor from potential damage.

Q: What should I do if my B3350 Kubota tractor experiences clutch problems?

A: Check the clutch pedal adjustment and inspect the hydraulic lines. If the issue persists, contact a qualified technician to diagnose and repair the clutch system.

Q: How can I prevent hydraulic leaks in my B3350 Kubota tractor?

A: Regularly inspect the hydraulic system for any signs of damage, such as cracked hoses or damaged seals. Addressing small issues promptly can prevent leaks and maintain the hydraulic system’s integrity.


The B3350 Kubota tractor is a dependable workhorse, but it’s not immune to problems. By understanding common issues and implementing proper troubleshooting and maintenance practices, owners can keep their B3350 in optimal condition for years to come. Remember to address any problems promptly, consult professionals when needed, and prioritize regular inspections to ensure a smooth and efficient operation.

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