7 Cub Cadet XT3 GSX Problems and Solutions

cub cadet xt3 gsx problems

When it comes to mowing you need tested and reliable equipment. Cub cadets are by all standards, good lawnmowers.

These are state of art tractors powered by a 25 hp Kohler Command series engine. They are excellent heavy-duty mowers designed with durability and innovation in mind.

Thus, each unit from the brand is proof of what the company stands for. Cub cadet xt3 gsx is thus one of the models designed for mowing and will do its job flawlessly.

But despite the great features, there are cub cadet xt3 gsx problems you may need to grapple with when using this tractor.

Engine issues, black smoke, and wrong discharge chute are some of the problems the mower suffers from.

Consequently, you must learn to solve them to keep the machine in good shape for better performance.

Cub Cadet has superb traction. Therefore, you can comfortably deploy it to work on uneven ground because of its rear differential locking system.

However, there are problems you must anticipate and learn how to solve them to enjoy working with the tractor. They include:

Cub Cadet XT3 GSX Problems & Solution Table

1. Starting problem – Refuel the mower
– Replace the safety switch
– Adjust the carburettor idle mixture screw 
2. Engine lacks power – Replace the fuel pump
– Clean the clogged passage
3. Engine overheats – Do not overload the engine
– Ensure the ventilation system is functional
4. Excessive fuel consumption – Open the throttle
– Adjust the chokeReplace the carburator
5. Emits black smoke – Unclog the fuel lines
– Adjust the choke cable Replace the filters
6. Chute discharge issue– Mow at a lower speed
– Avoid mowing wet grass
– Adjust the cutting size 

1. Starting Problem

Cub cadet xt3 gsx will fail to start if is has a faulty spark plug. Besides, when there is insufficient fuel, the mower will not start.

The lawn mower will only start if you use the right oil or when the fuel lines are not clogged. But in some other cases, overfilling the fuel tank will likely to lead to starting problems.

Thus, it is vital to ensure that the fuel level is correct before starting the mower. Additionally, Cub cadets may not start if the safety switches malfunction or if the carburetor is improperly adjusted.


  • Check the tank and refill it if empty.
  • Inspect the quality of fuel and oil if it is stale, drain and refill it.
  • Check the spark plug and wire connections to the engine.
  • Replace the safety switches.
  • Adjust the carburetor idle mixture screw.

2. Engine Lacks Power

The engine may start well but the garden tractor may lack the power to continue mowing. This problem could be caused by high engine temperature or using the wrong oil.

It could also happen when the pump fails, or the ventilation systems are clogged. Similarly, it can happen when the air cleaner is in plugged condition or when the engine is overfilled with oil.


  • Remove excess oil
  • Repair or replace fuel pump
  • Adjust the governor
  • Clean the plugged passages
  • Check the mower’s engine for compression

3. Engine Overheats

Engine overheating is a common problem in tractors. Overheating reduces the engine’s lifespan, denies it power, and could even make the mower get stuck.

The main causes of overheating are overloading, non-functional cooling fans, and clogged air filters.

In some cases, overheating may be caused by obstructing the cooling fans or using low-quality engine oil.


  • Do not overload the engine.
  • Ensure the engine ventilation system is functional.
  • Check the fuel level; it should neither be too high nor too low. If it is stale, drain and replace it.

4. Excessive Fuel Consumption

When the mower consumes too much oil, it becomes inefficient and may not serve its purpose.

This could happen if the throttle does not open entirely or when the carburetor has issues. It could also happen when the choke is faulty.


  • Adjust the choke cable.
  • If the throttle is not open, ensure to open it.
  • Replace the carburetor.

5. Emits Black Smoke

At some point, Cub cadet xt3 may start emitting black smoke. This could happen when it burns excess fuel or the air cleaner element is clogged. Also, if the choke is partly activated, it may produce black smoke.

If the system is overflooded, it could also lead to overflooding, which soaks the carburetor leading to black smoke. Unfortunately, clogged filters and clogged fuel lines are the culprits of overflooding.


  • Clean the air filters and replace them if they are in bad shape.
  • Inspect and adjust the choke cable.
  • Unclog the fuel line.

6. Chute Discharge Issue

The ability to discharge the chute is vital and will allow you to continue working.

But Cub cadets may not perform this duty if riding the mower at high speed and cutting long grass. Similarly, this may also happen when you cut wet grass.


  • Mow at a lower speed.
  • If the grass is tall, reduce the height.
  • Open the choke if the engine speed is excessively low.
  • Check the deck and adjust the cutting size.
  • Reinstall the belt if it is loose.

7. Light Issue

Lighting is important when mowing. It enhances visibility and allows you to check the quality of the job done.

This is especially the case when mowing at night. Unfortunately, the lighting system may have issues and refuse to work. Circuitry defects or burnt-out bulbs could cause this.

Also, excessive vibration may lead to bulb burnout. Whatever the reason, you must fix the light problem to resume operations.


  • Check defects with the light connectors.
  • Replace the bulb if it is burnt out.
  • Check for short circuits and burnt-out wires.

Cub Cadet Xt3 Gsx Review

XT3GSX has become a consumer favorite mower thanks to the level of horse power output and durability.

Notice that this lawn tractor is well known and comes with features you may not get from mowers in its category.

The steering wheel, for instance, can turn the mower even in a tight turning radius. Also, its ability to mow tall grass is excellent.

This explains why the tractor continues to receive positive reviews from previous and current users. The mower is affordable and will cost you about $6099 to drive it to your garage.

Also, it comes with a warranty. But to enjoy the best of the tractor, it is important to fix any emerging problem before it worsens.

Note that cub cadet xt3 gsx runs on a powerful Kohler command series engine. This is a twin-cylinder engine with 25 HP capabilities.

Further, it has a rear differential locking system that provides the traction needed to mow steep and uneven terrain.

The operator may require to simply engage the lever when the rear tire starts slipping or when mowing hilly areas.


Which engine does cub cadet xt3 gsx use?

Cub cadet xt3 gsx is fitted with a 25 hp KOHLER command engine. This is a twin-cylinder engine with a rear differential locking system. The locking system increases traction and allows the mower to work in hilly or sloppy terrains. Also, the mower features a steel brush guard to protect the tractor when mowing rocky areas or performing tough tasks.

What is the most common problem with cub cadet xt3 gsx?

Like other mowers, cub cadet tractor has several problems you will need to learn to solve to enjoy mowing. Top on the list is engine problems, starting issues, and the engine’s lack of power. Also, the mower suffers from fuel-related issues, light, and chute discharge problems.

What are the advantages of electronic power steering?

The electric power steering uses a motor to drive the mower. The steering does not draw much power from the engine, and so it enhances fuel economy. As a result, the mower burns less fuel and releases fewer emissions in the environment. Also, it comes with an electronic power steering, which does not require a drive pulley, and the belt hence reduces tear and wear.


The cub cadet xt3 gsx is a powerful mower to deploy to mowing tasks. It runs on a 25 hp Kohler engine and features the rear differential locking system.

This is the system that increases traction when mowing uneven surfaces. Besides the engine, the mower is simple in design and so allows the operator to fix defective components without calling in an expert.

Note that the mower features a soft grip steering wheel that allows the operator to control the tractor while working.

In addition, it comes with a direct shaft drive and so it does not feature a drive system that will slip or break when in the middle of a task and waste your time.

Therefore, if you can find a way to deal with cub cadet xt3 gsx problems, you will enjoy mowing using this impressive tractor. The tool will help you keep your home neat and increase its value.