6 Common Cub Cadet XT3 GSX Problems

Owners of the cub cadet xt3 gsx have been experiencing a number of problems with their garden tractors.

In this article, we will discuss some of the most common cub cadet xt3 gsx problems and how to fix them.

The most common Cub Cadet XT3 GSX problems are related to the transmission, the mower deck not rising correctly, the tractor using excessive fuel, and the tractor beginning to lack power.

If you are having issues with your cub cadet xt3 gsx, be sure to read this article!

Cub Cadet XT3 GSX Transmission Problems

One of the most common problems with the cub cadet xt3 gsx is transmission failure. The tractor’s transmission provides power to the wheels and has been known to fail prematurely.

The transmission on the XT3 GSX is a cast iron differential that’s full of hydro gear parts and a charge pump; as far as transmissions go, it’s one of the best.

It’s a heavy-duty transmission, and with that comes regular maintenance needs to ensure it stays in total working order and you’re not taking it to your local repair shop anytime soon.

After every 100 hours of use, I’d recommend changing the transmission oil and filters and regularly checking the filters for any dirt or debris that could be clogging them up.

Mower Deck Problems

Problems with a mower deck are a regular occurrence on heavy-duty tractors, and the Cud Cadet XT3 GSX also has this occasional problem.

I’ve dealt with a few situations when trying to raise the mower deck; it simply won’t go up.

This is usually down to one of two things, either you’ve got a blown fuse, which will need to be replaced and is an easy problem to fix, or the actuator could be defective. A faulty actuator is more expensive and complicated to fix, but they are the two likely culprits.

Lack of Power Issues

Many Cub Cadet XT3 GSX owners find that their tractor lacks power. This can be due to several factors, but the most common cause is an issue with the fuel system.

Dirty fuel, or water in the fuel, are the two most likely causes of this problem.

I’d recommend draining the fuel tank and refilling it with fresh, clean fuel to fix this. I’d also recommend adding a fuel stabilizer to the tank to help keep the fuel fresh for longer.

Another potential problem is a faulty fuel pump; if your fuel pump can’t push fuel around the engine as efficiently as it did when you first purchased it, you’ll be able to feel a noticeable drop in power. Fuel pumps are easy to get hold of and easy to replace.

Excessive Black Smoke

White smoke coming from your tractor is relatively standard, but black smoke rarely spells good news!

If you’re cub cadet xt3 gsx is billowing black smoke; it’s likely that there’s an issue with the engine.

Possible causes include a faulty injector, incorrect fuel/air mixture, or a clogged air filter.

Check your injector, clean your filters and ensure you’re using the correct fuel. Always opt for premium fuel, and never run your tractor on fuel that’s been sitting in the tank for months without use.

I’d also recommend checking the fuel lines and adjusting the choke cable; issues with either of those will result in black smoke coming from the engine.

Problems Starting The XT3 GSX

Ride-on tractors are heavy-duty, finely tuned machines; they need to be regularly maintained and kept in excellent condition; if you don’t follow those instructions, at some point, you’ll be dealing with a tractor that won’t start!

There are a number of potential causes, but the most common are a weak battery, old spark plugs, or a dirty air filter.

I’d recommend checking the battery first; if it’s more than three years old, it’s probably time to replace it.

Next, check the spark plugs; if they’re black and dirty, it’s a good indicator that they need to be replaced. Cleaning them isn’t really an option, and you’ll only be prolonging the inevitable.

Finally, check the air filter, a dirty air filter will restrict airflow and make it difficult for the engine to start.

An important tip I’ve picked up with these tractors is always to use good quality oil and change the oil regularly. It’s essential to keep your engine ticking over.

Fuel Consumption Issues

I’ve seen so many users having issues with fuel; you fill the tractor up, you’re barely into a mow, and you can feel the tractor pulsing, needing more fuel.

This issue has been widely reported, and it’s likely a problem with your carburetor or the choke cable.

A quick fix is to adjust the choke cable, this will usually solve the problem for a while, but it’s not a long-term solution. Remember, the throttle needs to be open to its maximum to run correctly.

Now it’s time to check the carburetor, this is a complex process, and I’d only recommend attempting it if you’re confident working on small engines. You’re checking for any obvious signs of deterioration if it’s covered in debris and grime or any other obvious problems.

If you’re not confident enough to service or replace the carburetor, I’d recommend taking it to your local cub cadet xt3 gsx dealer or a reputable mechanic.

Frequently Asked Questions:

Does Cub Cadet xt3 have power steering?

No, the Cub Cadet XT3 does not have power steering.

How do you remove the mower deck on a Cub Cadet xt3 GSX?

To remove the mower deck on a Cub Cadet XT3 GSX, first, disconnect the battery. Next, remove the bolts that hold the deck in place. Finally, lift the deck off of the mower.

How much does a Cub Cadet xt3 weigh?

The Cub Cadet XT3 weighs approximately 300 pounds.


None of the problems I’ve touched upon today are major; they can all be put down to general wear and tear, which you’ll get with any tractor.

The Cub Cadet XT3 GSX is a solid, reliable tractor, and I’ve no problem recommending it to anyone looking for an opinion.

The key is to regularly maintain your tractor, checking for any issues and addressing them before they become a big problem.

If you’re having any issues with your cub cadet xt3 gsx that you can’t fix yourself, always take it to your local dealer or a reputable mechanic. They’ll be able to quickly diagnose and fix the problem, getting you back out on your tractor in no time. Fingers crossed your warranty is still valid!