How to Fix Common Bobcat 843 Skid Steer Loader Problems?


Bobcat 843 is known to be one of the best-performing skid steer loaders. However, similar to any skid steer loader, you may face a few problems. But, if you can identify the issues without worrying, you can fix most problems.

So, what are the most frequent Bobcat 843 problems? Well, some common bobcat 843 problems include clogged fuel filter, clogged fuel injectors, bad fuel pump, and disconnected loader connections are the most prominent that you might face with your Bobcat 843.

In this guide, you will describe the frequently occurring issues with the Bobcat 843 and their possible solutions. What you should do is read this article to the end.

What Are The Common Bobcat 843 Problems?

The Bobcat 843 has impressive horsepower and smooth operation, making it famous among users.

However, besides performing many small-scale tasks, you may often face problems with this Bobcat skid steer mode.

The most frequent problems that users face are given below.

  • Clogged fuel filter
  • Clogged fuel injector.
  • Bad Fuel pump.
  • Disconnected loader connection.
  • Corroded glow plug.

5 Easy Solutions For Bobcat 843 Problems

Now you know what problems might irritate you if you are a Bobcat 843 owner. Every problem in this world has solutions.

When it comes to fixing the problems of the Bobcat 843 skid loader issues, there’s nothing to worry about.

1. Check and Replace the Clogged Fuel Filter

Check and Replace the Clogged Fuel Filter

Most of the problems regarding the Bobcat 843 are due to clogged fuel filters. In most cases, the clogged filter causes the poor engine of your Bobcat 843 not to start.

The issue of clogged fuel filters may take place due to additional dirt, and dust stuck into them.

However, in this case, your first need is to replace the clogged fuel filter. Experts recommend replacing the fuel filter of the skid steer every 500 working hours.

But, changing the fuel filter is essential more frequently to keep the diesel clean if you live in a dusty environment.

Look at the steps below to change the clogged fuel filter of Bobcat 843.

● Step 1: Locate the Fuel Filter

Locate the Fuel Filter

First, you need to locate the fuel filter inside the engine compartment of your skid steer, Bobcat 843, in this case. Once you open the cover of the engine compartment of your skid steer, you will notice the fuel filter beside the air filter.

● Step 2:  Pull out the Fuel Filter

Pull out the Fuel Filter

Now, you have to pull out the fuel filter. You can use a wrench in this case. Set the wrench on the fuel filter and turn it to the left to free the fuel filter. You may need to turn the wrench a few times until the fuel filter comes out.

● Step 3:  Reinstall the New Fuel filter

Reinstall the New Fuel filter

Once you unscrew or pull out the clogged fuel filter, it’s time to place the new one. The process is simple, put the new filter where the clogged filter was and get the wrench back on it. Next, give the wrench an old quarter turn to tighten the fuel filter.

Changing the hydraulic fuel filter of your Bobcat 843 will cost you around $30-$40.

Furthermore, if you find it essential to call a mechanic, it may cost you another $50-$70 more. But, by following the step above, you can change the fuel filter.

2. Check and Clean or Replace the Clogged Fuel Injector

Check and Clean or Replace the Clogged Fuel Injector

Similar to the clogged fuel filter, the fuel injector of your Bobcat 843 may become clogged. If there is an issue with a clogged fuel injector with your skid steer, it causes a lack of fuel flow.

Moreover, it is essential to change the fuel injector of your skid steer loader at regular intervals. But, before that, you need to check whether cleaning the clogged fuel injector does the task.

  • Step 1: Remove the hood of your Bobcat 843 skid loader and locate the fuel injector.
  • Step 2: Remove the air cleaner assembly.
  • Step 3: Unscrew and pull out the fuel injectors. You can use a wrench to do so.
  • Step 4: Clean and reinstall the fuel injectors. Once you place the fuel injectors, don’t forget to reinstall the fuel return line on the fuel injectors as well.

However, if cleaning the clogged fuel injectors can’t work, replacing them is better. Follow the steps above to replace the fuel injectors as well.

You must pay around $95 to $100 to purchase 4ps fuel injectors. But, not all the fuel injectors may become clogged at the same time. So, only replace the clogged fuel injector.

3. Replace the Fuel Pump

Replace the Fuel Pump

You can expect to run your Bobcat 843 skid steer properly having a bad or faulty fuel pump. At the end of the day, a malfunctioning fuel pump causes the loss of pressure in the fuel system.

And, when there is a loss of pressure on the fuel system, you will likely face engine trouble starting.

So, it becomes mandatory to replace the fuel pump when you are pretty sure that it goes bad. Sudden engine stalls, skid loader engine idle, and engine misfire are the most common symptoms of a bad fuel pump.

Therefore, follow the step below to replace the fuel pump of your skid loader Bobcat 843.

  • Step 1: First, locate the fuel pump underneath the driving seat, left side of the engine compartment of your skid loader.
  • Step 2: Now, you have to unscrew the bolts connected to the food pan. Once you unscrew the bolts and remove the fool pen, you will see the fuel pump.
  • Step 3: Remove the mounting bracket assembly of the fuel pump.
  • Step 4: You should remove the fuel lines from the pump. Make sure you also disconnect the wiring harness plug from the fuel pump.
  • Step 5: Here, you need to remove the fuel pump from the bolts that connect the fuel pump to the block.
  • Step 6: Reinstall the new fuel pump.

You need to be ready to pay around $700-$900 to replace the fuel tank of your Bobcat 843.

4. Reconnect or Tighten the Loader Connection

Reconnect or Tighten the Loader Connection

Sometimes the connection wire if the loader becomes disconnected or loosened. If this happens, it may cause some of the control system issues of your Bobcat 843 skid steer loader.

However, you may notice that the steering and the loafer controller are not working in many cases.

In this case, there’s no alternative to reconnect or tighten the loader connection wires of your skid loader.

Furthermore, you should also be sure that the wires connecting the fuel pump and joystick are connected properly.

Besides, it’s more likely that the hydraulic hose plugged into the coupler has come loose. So here you also need to tighten it. In this case, you can use your hand to tighten the wires and plugs.

Nevertheless, you can perform the task independently, and it won’t cost you any money. On the other hand, if you want to hire a mechanic, you must be ready to spend $70-$80, depending on the required hours to finish the task.

5. Clean or Replace the Corroded Glow Plug

Clean or Replace the Corroded Glow Plug

The Bobcat 843 has four glow plugs. You may never want to see the engine misfire of your skid steer. But, once the engine’s glow plugs become corroded, it can cause many unexpected and severe issues with your engine.

Operating your skid steer loader will be difficult due to a corroded glow plug.

So, to get rid of this problem, you first need to clean the corroded glow plug. However, if it becomes incredibly corroded, you need to replace it without a second thought.

Take time and unscrew the glow parks like you learned about cleaning and replacing the fuel injectors.

You will find the glow plugs connected to the top of the cylinder head of your skid steer loader. Sometimes, the glow plug may lose; you need to tighten them.

It will cost you anything between $10-$15 to replace a glow plug of your Bobcat 843 skid steer. Furthermore, hiring a mechanic will cost you more, as replacing the glow plugs is difficult.

Frequently Asked Questions (FAQs)

Here we have collected some of the frequently asked questions by the existing Bobcat 843 owners and people who tend to buy the skid steer. We hope you will also have a decent idea after reading this section.

What engine is in a Bobcat 843?

The Bobcat 843 has a superficial diesel engine, making the skid steer perform well. Furthermore, the impressive horsepower of 54 is something that shows its ability to carry a greater amount of load.

How much can a Bobcat 843 lift?

When it comes to lifting ability, the Bobcat 843 is one of the best among all types of skid steer. In addition, it comes with a rated operating capacity of 1700 lbs which is highly impressive.

Can I change the Glow plug of My Bobcat 843 on my own?

Sometimes, it may seem a lot for you to change the glow plug of your Bobcat 843 on your own. But, it needs some additional tools and knowledge to work with the glow plugs. However, if you have the tools or don’t know much about glow plugs, you should go with the mechanic.

What Causes the Bobcat 843 not to run smoothly?

Issues with the fuel filter, fuel injectors, fuel tank, etc., don’t allow the Bobcat 483 to run smoothly. For this, when you find it difficult to operate your skid steer, make sure you check the components.


It’s essential to solve the issue with the Bobcat 843 whenever you notice them. You may never want to face trouble starting your skid steer engine when you badly need to dig your field or something else.

In this guide, you have learned about Boncut 843 issues. Thus, next time you face any problem, take this article as a guideline. Furthermore, try to be more careful about the maintenance of your skid steer.

Before taking any troubleshooting steps, ensure you have a decent idea about the parts and components you want to troubleshoot. If it needs to go with the mechanic, do so.  That’s all.

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