Kubota M9960 Problems : 5 Common Issues (Explained)

Kubota, a Japanese brand is one of the notable names when it comes to farming and utility tractors. One of its models is the Kubota M9960. We shall be looking into some of the common problems with the Kubota M9960.

Table of Contents

What Is Kubota M9960?

The Kubota M9960 is a power-packed standard farm or utility tractor. It has 110 horsepower coupled with an exceptional power to weight ratio. It is a diesel engine and comes as either a 2WD or a 4WD. Its hydrostatic power steering and hydraulic wet disc brakes lighten operational effort.

Kubota M9960 Problems

Most of the problems encountered on the Kubota M9960 are operator-related. This can be due to faulty operation or general aging of certain components. That is why at times replacements or mere adjustments rectify most Kubota M9960 problems.

1. Engine Not Starting

It is a common Kubota M9960 problem. Another variation to this is the engine being hard to start. Possible causes may be as follows:

  • Contaminated fuel.
  • Worn out piston rings.
  • Fuel vent may be clogged.
  • Fuel filter may be clogged.
  • Injectors may be worn out.

Troubleshooting Engine Not Starting Problem

When the Kubota M9960 does not start or is difficult to start, the problem is often easy to note. Check fuel, filter, injectors, and piston rings, amongst others. Then you can do the following:

  • Ensure the fuel is not contaminated; replace it if needs be.
  • Unclog the fuel vent and or filter if clogged.
  • If injectors are worn out replace them.

2. Engine Overheating

Most Kubota M9960 operators often cite engine overheating as a common problem. Here are some of the possible causes:

  • The fan belts could be too tight, too loose or faulty.
  • It may be due to misplacement of gears.
  • Inadequate coolant or it may be leaking.
  • Radiator may be faulty or dirty.

Troubleshooting Engine Overheating Problem

Once you have ascertained what the cause it you may do the following:

  • Ensure the fan belts are properly in place.
  • Replace worn out fan belts.
  • Ensure gear placement is correct when operating.
  • Keep coolant at optimum levels; plug any leakages.
  • Clean or replace radiator if necessary.

3. Low Engine Power Output

This is yet another problem commonly mentioned by many Kubota M9960 operators. Operators will notice that the output is deficient in light of the tractor’s power rating.

  • This may be caused by low compression.
  • There could be low atomization at the nozzle.

Troubleshooting Low Engine Output Problem

Overall, when encountering insufficient power output, engaging your servicing provider would be ideal.

  • Low compression can be effectively rectified by your servicing provider.
  • The same goes for low atomization; get the engine serviced.
  • Replacing the nozzle may help for low atomization.

4. Engine Often Stalls

This happens in many ways, usually out of the blue. The engine can start normally and operate for a while. Then it can suddenly stop and even refuse to start again. At times it may not even start at all.

  • It could be caused by a worn out bearing bush.
  • The fuel line may have a blockage.
  • The fuel filter may be clogged.

Troubleshooting Engine Stalling Problem

There are basic checks you must do when your Kubota M9960 engine stalls. Your findings will necessitate doing some replacements or corrections.

  • If the bearing bush is worn out then replace it.
  • Upon discovering a blocked fuel line, unblock it.
  • A clogged fuel filter needs to be unclogged or at times replaced.

5. Loose Steering Wheel

This is when the steering of the Kubota M9960 turns too loosely. In some cases the steering may not even work at all. This will be problematic in that there will be a disconnection between the steering and the engine. Some of the causes are:

  • Oil level may be too low.
  • The steering cylinder may be faulty.
  • The pump of the steering may be faulty.

Troubleshooting Loose Steering Wheel Problem

Generally, if the steering of your Kubota M9960 is loose or problematic in some way you can fix some things. You can:

  • If the oil level is too low, simply top it up to the optimum level.
  • Do or get the necessary repair done on the steering cylinder.
  • It would be best to replace the steering pump.

How To Avoid Kubota M9960 Problems

Most of the Kubota M9960 Problems are caused by faulty or worn out components. This implies that one of the best ways to avoid them is getting your Kubota M9960 regularly serviced. It is also smart to regularly clean your tractor after every use. Ensure that you operate it as should be without taking shortcuts. You must also use the right products for your Kubota M9960. This refers to things like fuel and oils. Stick to a routine of making checks on your Kubota M9960 prior to and after every use.

Are Kubota Tractors Good Quality?

Kubota tractors are definitely a top notch brand. Actually, Kubota is one of the most reputable brands when it comes to all farm and tractor equipment. With good maintenance and servicing, a Kubota tractor can last up to roughly 10 000 hours of operation.

How Often Should I Change Oil In My Kubota Tractor?

This is basically informed by checking the oil first; something you ought to do after every 50 hours of operation. It is recommended that oil should be changed after every 200 hours of operation. The same goes for the oil filters. Transmission fluid should be changed after every 300 hours of operation. The same goes for hydraulic oil filters.


The Kubota M9960 is a good tractor brand and model. It is durable and delivers good power output. Plus it is generally less tasking to operate. As is apparent from our discussion, proper usage, servicing, and maintenance are essential. Those are the ways through which you can avoid problems. The Kubota M9960 typically comes ready for work. It is how and where you use it that makes the difference. Obviously if you use it for heavy duty operations, wear and tear tend to be frequent.