Why Does My Cub Cadet Keep Dying?

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Cub Cadet has been on the market for over sixty years. With a wide range of models, Cub Cadet’s has a full line of lawn mower features that enhance a smooth and productive mowing experience.

However, users might experience some engine problems that might cause them to die, prompting the need to know the causes behind it.  

This article shares possible reasons why your Cub Cadet might keep dying and some practical solutions to the problem.

4 Reasons Why a Cub Cadet Might Keep Dying


Here are some of the possible reasons why your Cub Cadet mower keeps dying and the solutions to it:

  • Clogged Carburetor

A clogged carburetor can cause your Cub Cadet mower to keep dying. This happens when there is a leftover gas in the mower for a long time. 

This leftover gas evaporates and leaves behind residue, clogging up the carburetor.

Carburetor clog can occur as a result of an accumulation of contaminants in the gas. 

The gas may have ingredients that evaporate and produce moisture, leading to blockage and condensation. 

A plugged carburetor can also make the engine not start because the mixture of air and fuel is too lean. This will lead to poor power, rough running, and decreased fuel economy. 

To prevent this from happening, you should use your mower regularly and not leave it idle for a long time with leftover gas in them. 

You can also use a carburetor cleaner to kill the component.

  • Clogged Fuel Cap

A clogged fuel cap might make your mower die by not allowing air to enter the gas tank. This will cause a vacuum at the carburetor, stopping the flow of fuel in the engine.

The fuel cap should be properly placed and cleared of debris. Clean the components and start the engine. 

If it starts, you are ready to go. If it does not, you might need to replace the fuel cap entirely.

  • Contaminated Gas

If the gas tank of the Cub Cadet mower gets contaminated, it can turn into a big mess. 

When the gas is left in it for a long time, it will create a thick layer of condensation.

Tanks that are subjected to this problem may also have a greater risk of corrosion. 

A blocked fuel line can clog up the fuel system and prevent your machine from starting. 

Ensure that you check for deposits on your mowing machine regularly.

  • Worn-out Spark Plug

Spark plugs are common parts of gas or diesel-powered engines.  

A spark plug provides the spark that is needed to initiate combustion. A worn-out spark plug can cause your engine to die without warning. 

Ensure that you inspect the spark plugs at every oil stage for signs of wear or damage caused by carbon build-up.  

An electrode on the spark plug can be burned off during normal operation, cutting down on its ability to generate enough sparks to fire up the engine.

The build-up of gas in an engine combustion chamber can make the generation of sparks difficult. The best way to fix this is to replace the worn-out spark plug with a new one.

Frequently Asked Questions

How long does a Cub Cadet battery last?

The batteries of Cub Cadet mowers are backed by a 3-year warranty. Tests have shown that they can last for five to six years. They might require replacement only once over that period.

Do Cub Cadet mowers have alternators?

Yes, they have alternators. You can use this feature to get the battery recharged in a short while and get-go with your mowing machine.


In this article, we discussed the main reasons and quick fixes to what makes a Cub Cadet keep dying. 

You can follow the aforementioned tips to fix the problem. If you find it difficult to fix it, it is advisable to seek the help of a professional.

Top Recommended Handy Tools for Troubleshooting & Servicing Your Lawn Mower

Multimeter – This is useful for checking voltage, continuity & current to identify electrical problems in your mowerFilter Wrench – For loosening your mower’s filter.
Carburetor Cleaner – Choke and Throttle Body Cleaner for cleaning clogs & buildup in the fuel system.Blade Balancer–Balances Blades After Sharpening.
Fuel Stabilizer – This stabilizes & cleans your fuel to reduce fuel system buildupBattery Inflator – This helps to ensure your mower tires stay inflated to prevent steering or uneven cutting issues.
Socket & Allen Wrench Set – These tools are needed to service & troubleshoot your mower problemsTachometer– Evaluates your mower’s engine performance and provides accurate data about the status of the engine
12-Volt Battery Charger – This is useful for charging your mower battery.Lawn Mower Blade Sharpener– Adjustable Lawn Mower Blade Sharpener for Right and Left Hand Blades.