5 Common Cub Cadet Fuel Injection Problems (Easy Solutions)

Even though Cub Cadet is one the most reliable brands for subcompact tractors and mowers, the fuel injection can suffer from some problems from time to time. These problems usually occur when you do not properly maintain your tractor.

Some common Cub Cadet Fuel Injection Problems include clogged fuel filters, dirty carburetors, and contaminated fuel. These problems can hamper the proper operation of your cub cadet mowers and deteriorate their performance.

Other than the three problems we talked about, there are a few other minor problems that your Cub Cadet can suffer. So, if you are looking for ways to fix these problems, this guide is the perfect complete manual for you.

What Causes Cub Cadet fuel injection problems?

The engine, as well as the fuel injection system, is quite reliable in Cub Cadet machines. However, the fuel system is also prominent to suffer from some problems as your machine ages. Read below to know about these problems.

  • Clogged Fuel Filter
  • Dirty Carburetor
  • Contaminated fuel
  • Clogged fuel lines
  • Problematic Fuel Pump

5 Solutions For Cub Cadet Fuel Injection Problems:

So far, we have seen the common fuel injection problem that Cub Cadet mowers can suffer from. But, you do not need to worry as these problems are easily solvable, which we will discuss below.

1. Clean or replace clogged Fuel Filters

Clogged fuel filters are one of Cub Cadet’s most frequent issues. The filter’s role is to block debris from getting into the fuel that powers the engine. The fuel filter has a very high likelihood of being blocked as a result.

You can either clean or replace the fuel filter. Replacement of fuel filters can cost anywhere from $15 to $80. But if you hire a mechanic, the cost will be higher. Read below to learn how to clean or replace your fuel filter.

  • Step 1: Find the location of your fuel filter and open it up. Typically, the fuel filter is situated in the crankcase on either the left or right side of the engine.
  • Step 2: Clean the fuel filter very well using a fuel filter cleaner. If the filter is beyond cleaning, you must replace it.
  • Step 3: The filter must be mounted with the sign on the filter pointing in the gasoline flow direction. A fuel filter should be sent toward the tank via the pump and Carburetor.

2. Clean or Replace Carburetor

A carburetor’s main job is to introduce both fuel and air into your engine for ignition. Because of the dirt and debris, it frequently becomes dirty and blocked. Follow the steps below to know how to clean the Carburetor.

  • Step 1: Open the Carburetor from your Cub Cadet tractor or mower. To remove the Carburetor, close the fuel tank’s gasoline valves first, then unplug the Carburetor’s fuel line. Next, remove all the nuts and screws before carefully grabbing your Carburetor.
  • Step 2: Drain all the fuel from the Carburetor before cleaning it.
  • Step 3: Now, use a carburetor cleaner and spray it well on it. Your Carburetor should now be cleaned. However, sometimes it becomes impossible to clean the Carburetor. In this case, you will need to replace it.

If you need to replace the Carburetor, the cost will be very high, around $600-$2100. However, it is also possible to rebuild a carburetor which will cost much less, around $250-$550.

3. Flush your fuel tank

Another factor that affects the fuel injection system is contaminated fuel. Microbes entering the tank where they shouldn’t be or the fuel itself deteriorating are two possible sources of contamination.

There is a good probability that the fuel will be polluted if left in the fuel tank for an extended period.

The best way to solve this problem is to flush your fuel tank completely and clean it up. Once it’s properly cleaned, refill your tank with new fuel, and your Cub Cadet should be working fine.

4. Clean Fuel lines using carb cleaner

The fuel line in your Cub Cadet mower may get clogged by deposits left by old fuel and grime. Cub Cadet’s fuel pump has issues as a result of this blocked region. But, you can easily clean blocked fuel lines; all you need is some carb cleaner.

  • Step 1: At first, you will need to open up your fuel lines and observe whether it is blocked or not. If it is blocked with dirt and debris, proceed to the next step.
  • Step 2: Spray carb cleaning into the tube, then blast air into it with compressed air till the pipe is completely free of sticky gunk. Even after spraying cleaner, if you see that lines are still blocked, you will need to replace the fuel lines.

5. Replace the fuel pump with a new one

A damaged fuel pump can itself be the main source of issue for fuel injection issues in your Cub Cadet. Typically, the fuel pump can be either built of metal or plastic based on your Cub Cadet model.

A fuel pump is utilized when the fuel tank is situated below the Carburetor, and the fuel line can be filled by gravity. Over time the fuel pump can get damaged, causing issues with supplying fuel properly.

Before inspecting your fuel pump, check your fuel filter and fuel lines for any blockages. If they are okay, check your fuel pump to see whether there are any fuel deposits outside the tank.

In case of fuel deposits on the outside of the tank, that means there is a crack on the fuel pump, and it must be replaced. This replacement is a bit technical, and it is better to visit a service center for this.

The cost of replacing a fuel pump might be rather high. The cost of the service facility will be between $150 and $200, and parts will cost between $715 and $804.


If you have read this guide till now it is common to have some questions bobbing around your head, Read below to find the answers of the faqs related to fuel injection problems for Cub Cadet.

Why is my Cub Cadet not getting fuel?

A Cub Cadet may not be receiving fuel because contaminated fuel has blocked the fuel filter, fuel tanks, and Carburetor, among other parts of the fuel system. Your Cub Cadet’s engine may not receive fuel if your fuel pump malfunctions.

Is it worth fixing a Cub Cadet Fuel Pump?

You may avoid becoming stuck on the roadside by changing fuel pumps before they go down since they deteriorate with time. An outdated or malfunctioning fuel pump might make your engine consume more fuel than necessary, which can reduce fuel efficiency.

Why is my Cub Cadet Sputtering?

Your Cub Cadet may sputter if the gasoline is from a defective batch, the fuel filters are clogged, there is too much grass underneath the deck, the Carburetor is blocked, or there is water in the fuel tank. These elements frequently result in your mower losing power, which sparks sputtering.

Why does my Cub Cadet stop while running?

Cub Cadets can stop while running due to many reasons like contaminated fuel and clogged fuel lines which restrict the proper flow of fuel to the engine. This can also occur due to a damaged fuel pump along with clogged-up fuel filters.


Cub Cadet is a reliable brand for lawn owners. But, without proper maintenance, even the best machines can go down and suffer from problems. Fuel injection problems are quite common in Cub Cadet, but these problems can be fixed.

Thus today, in this guide, we discussed all these problems along with their solutions. Make sure to follow this guide properly before you go down fixing your Cub Cadet.

You should be able to fix all these issues by yourself very easily. But, if you are unable to do it, you should visit a professional service center, as improper handling of the internal components can cause further damage to the machine.

Related Posts:

Leave a Reply

Your email address will not be published. Required fields are marked *