8 Common Problems with Cub Cadet LT1045 (Easy Solutions)

Cub Cadet LT1045 is one of the finest lawn mowers available in the market these days. It has many excellent features to give you a better user experience when it comes to making your lawn better. However, this model is not out of problems. Many users already reported some issues they faced while operating it.

Some of the common Cub Cadet LT1045 problems you may encounter w are the engine failing to start, the engine overheating, the engine running erratic, the engine not developing full power, excessive fuel consumption, etc. However, the good news is there is a solution for each problem of this model.

In this article, we will discuss the solutions to some common Cub cadet LT1045 problems. Want to know more, read on!

What are the Common Cub Cadet LT1045 Problems?

There is no doubt that Cub cadet LT1045 is a decent lawn tractor or mower. Still, you can experience some issues while working on it.

But, if you know the perfect troubleshooting techniques, you will be able to easily solve the issues. Below we will mention some common problems that most users face with this model.

  1. Engine fails to start
  2. Engine overheats
  3. Engine runs erratic 
  4. The engine doesn’t develop full power 
  5. Excessive fuel consumption
  6. Excessive vibration 
  7. Inability to Mulching Grass 
  8. Uneven cut

8 Solutions For Cub Cadet Lt1045 Problems:

When it comes to solving issues with the LT1045 model, you have to identify the causes first. There can be multiple reasons for a single problem.

If you find the causes, it will be quite easier for you to solve the issues. Below we will discuss remedial activities you can do to solve some common Cub Cadet LT1045 problems.

1. Engine Fails to Start: Find the Causes and Take Correct Remedial Actions

There could be a variety of causes for the LT1045 lawn mower’s engine to not start. For example, if PTO or blade engage knob is engaged, the engine will not start. In that case, you will need to place the knob in the disengaged position.

If the parking brake is not engaged properly, this problem may occur. You should engage the parking brake properly to solve the issue.

Make sure that the spark plug wire is properly connected to start the engine. Because if the wire in the spark plug is disconnected, you may face the issue.

If not, you should place the throttle lever in the FAST position. Otherwise, the engine will not start again.

Besides, if the fuel tank is empty or you are using stale fuel, you may encounter this issue. As a solution, you must fill up the tank with clean and fresh fuel.

2. Engine Overheats: Add Adequate Oil in the Crankcase and Ensure Proper Airflow

Sometimes, you will feel that the engine is overheated. There are mainly two reasons for this engine overheating issue. Firstly, the engine oil level may be low. In that case, you need to fill the crankcase with adequate oil.

Secondly, if the airflow is somehow restricted in the engine, it will become overheated. So, you need to clean dirt and debris from the cooling fins and blower housing of the engine. We hope these activities will solve the overheating issue.

3. Engine Runs Erratic: Find the Cause and Take Correct Action

When the engine runs erratic, there can be multiple causes for this issue. If the machine is running when CHOKE is activated, you may face this issue. To solve the issue, you need to push the CHOKE control in.

If there is any loose connection in the spark plug wires, the engine may also run erratically. In that case, you will need to connect and tighten the spark plug wires.

Another reason for this problem is blocked fuel lines or if fuel is stale, the engine will run smoothly.

To solve the situation, clean the fuel line properly. Besides, you must refill the tank with clean and fresh fuel.

You may also need to replace the fuel filter if it’s damaged. You can buy a new one for around 10 bucks.

Furthermore, if there is water or dirt in the fuel system, you must eliminate them to solve this problem.

4. Engine Doesn’t Develop Full Power: Change Fuel Filter, Drain Excessive Oil or Replace Fuel Pump

Sometimes you will feel that the engine of LT1045 is not developing its full power which can be quite disappointing. Possible reasons for this problem include engine overheating.

If this is the issue, you need to change the air filter. You will be able to get a new one for $10.

If there is excessive oil in the engine, this problem may occur. You need to drain the excess oil to solve this issue.

If the fuel pump is broken, the engine will not be able to develop its full power. Check the fuel pump output properly.

If it is broken, you must replace it. You will need to spend around 10-20 bucks for a new fuel pump.

Besides, if the governor is defective, you will still face the issue. Check and adjust the governor for fixing it.

5. Excessive Fuel Consumption: Inspect Throttle Cable or Adjust Carburetor

Another common problem with this mower is excessive fuel consumption. You may face this problem for two possible reasons.

First, there is insufficient choke opening, the engine may consume too much fuel. Inspect the throttle cable and fix the issue.

Secondly, if any issue happens in the carburetor, you need to adjust and fix it. Otherwise, the engine will consume excessive oil.

6. Excessive Vibration: Tighten Blade and Spindle, Replace the Cutting Blade

When you experience too much vibration while working with this lawn tractor, it is quite irritating. This problem happens mainly due to issues with the cutting blade.

For instance, if it is loose or not balanced properly, you will face the issue. In that case, you must properly tighten the blade and spindle.

If the cutting blade is bent or already damaged, you should replace it. When it comes to buying a new blade for your machine, it may cost you $10 -$40.

7. Inability to Mulching Grass: Mow Dry Grass, Prevent Excessive Growth of Grass Height

Many users face this problem when the mower shows an inability to mulch grass. There are several causes behind this issue.

If the engine speed is too low, it can happen. To solve the issue, you must increase the speed.

Maybe the grass is wet or excessively high and that’s why your mower is unable to get the job done. You should not mow when the grass is wet. Always use a lawn mower on dry grasses.

Besides, your grass should be of a specific height to get a good mowing experience. Don’t let your grass grow excessively. 

8. Uneven Cut: Level the Deck, Sharpen or Replace the Blade, Adjust Tire Pressure

The main purpose of a lawn mower is to ensure an even cut. But, sometimes you will get uneven cuts from your unit. If the deck is not properly leveled, this issue may occur. To fix it, adjust the deck from side to side.

A dull cutting blade might be the main culprit here. In that case, you must sharpen or replace it. It may cost you $10-$40 to replace the blade.

Furthermore, the problem may occur due to uneven tire pressure. Inspect pressure in all tires and adjust them equally.


Do you have any further questions? Here is a FAQ section for you that will help you to get the answers to some commonly asked questions.

Is Cub Cadet LT1045 a reliable brand?

Of course, Cub Cadet LT1045 is a reliable brand. It has many excellent features which will help you to make your lawn better. Without any doubt, you can put your trust in this lawn mower or tractor.

What engine is in a Cub Cadet LT1045 lawn tractor?

The Cub Cadet LT1045 comes with a Kohler courage engine. No wonder, it is a very powerful engine that is well capable of giving you an even cut in your lawn. Although you may face some issues with the engine, those can be solved easily.

Can you fix the excessive vibration issue in Cub cadet LT1045?

Yes, you can solve the issue easily. This problem mainly happens due to loosening the blade. So, try to tighten the blade and spindle first. You may also need to replace the cutting blade if it is damaged.

When will Cub cadet LT1045 give you an uneven cut?

There are several reasons why you get uneven cuts from this lawn mower. For instance, when the deck is not leveled perfectly, the blade is dull or there is uneven pressure in all tires, it can happen.

However, with proper troubleshooting techniques, you will be able to solve this problem.


When you talk about effective lawn mowers, Cub cadet LT1045 can get a chance on your list. It comes with a powerful engine and some decent features to improve your lawn. However, while using this unit, you may encounter some issues.

But, by following proper troubleshooting techniques, you will be able to solve every issue. Similarly, if you don’t know the solution, you will be blank about what to do.

In this article, we tried to give you solutions to some common Cub cadet LT1045 problems. We hope it was helpful and that you will be able to fix these issues on your own in the future.

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