7 Common Cub Cadet RZT 42 Problems And Their Quick Fixes
Are you depressed due to Cub Cadet RZT 42 problems? Are you wondering if your dream of getting a lush and pristine lawn ever be fulfilled?
Either way, this article has got a solution. Remember that every mower has some problems occasionally. So, no need to fret.
Some issues customers face include hour meter issues, safety interlock system issues, transmission problems, uneven cutting, and faulty clutch systems.
In this article, I’ll embark on a journey to elaborate on some common issues that may plague your Cub Cadet RZT 42.
And more importantly, I’ll provide you with the solutions you need to get back to effortlessly conquering your mowing tasks.
So, buckle up and get ready to get a perfect lawn!
Solutions To Cub Cadet RZT 42 Problems

Encountering issues with a lawn mower is surely disturbing and agitating. But when you know the solutions, it becomes relatively easy to combat the problem.
So, let’s learn how to deal with those annoying Cub Cadet RZT 42 problems.
1. PTO Clutch And Switch Problems
The PTO switch and clutch are the two essential components of your mower. They render the important function of blade engagement and disengagement.
Let me explain this clutch system for clarity. So, your device has a PTO switch, and when you turn it on, it provides power to the PTO clutch to engage and disengage blades.
So, if either of them becomes defective, the blades will not cut the grass properly, giving your lawn an unaesthetic look.
But don’t worry; I’ll explain the method to cope with this problem.
Also Read: (Fixed) 4 Most Common Cub Cadet Tank M60 Problems
Solution
First, you must remove the PTO switch from the battery.
Once you take it out, it’s time to carry out some tests that will assist in figuring out whether it needs to be changed.
You must test for the steady voltage between the battery and the switch.
If the flow turns out to be uneven, it depicts that the clutch and electric fuse are faulty.
While replacing, you must remember that resistance should never be less than 2.5 ohms. If it would, then there is the probability of a short circuit.
Lastly, you must inspect the clutch cable, and if it loosens the tightening, it will be enough to sort out the problem.
But if it’s damaged, remove it and replace it with another clutch cable. Don’t forget to attach it accurately.
2. Hour Meter Issues
The hour meter is surely an amazing feature, but if it becomes faulty, you may face problems.
When it comes to the hour meter function, it keeps a record of the operational hours of the mower.
It also gives valuable data about the maintenance schedule.
Ideally, it should start working when you turn on the lawn mower and stop working when it is turned off.
But if it becomes defective, then it may not start. Or in some cases, it may start but not perform its job efficiently.
This working hour difference will result in battery drainage and warranty period issues.
Also Read: (Fixed) 5 Prevalent Cub Cadet ZT1 50 Problems
Solution
Firstly, you need to keep in mind that the hour meter will keep recording as long as the key is on.
Therefore, if you are not using the mower, always remove the key and shut down the mower and engine.
But if you notice the hour meter working even after taking out the key, take it to the manufacturer and fix the issue.
Otherwise, your warranty period will keep reducing, and you will have to face its ramifications. So, take this issue seriously.
3. Fuel System Problems
Fuel system problems are common, but if left unaddressed, they can deteriorate your mower.
Such issues can impact the performance of an engine. And it may damage the engine to the extent that it may stop working.
So, if you notice any fuel-system-related issues in your mower, you should resolve them without delay.
The most common culprits behind fuel system issues are old fuel, clogged carburetor, air filter, and fuel filter.
Solution
You can easily avoid this issue if you change the fuel regularly. Set reminders for fuel change and never delay this important task.
Next, you have to inspect whether the oil is contaminated or not. If it is dirty, drain it and fill your mower tank again.
The next step is to check the filters and the carburetor. If their performance is affected due to clogging, then clean them.
And, if they are broken, you have only one option: investing in new ones.
4. Transmission Problems

Transmission problems are another common type of Cub Cadet RZT 42 mower. Some common transmission issues are slipping and leaking.
They usually surface if your transmission fuel has become too old and you have not changed it for a while.
Low levels of transmission fuel can also be held accountable for the emergence of such issues.
Additionally, transmission belts that have become worn out due to excessive usage are also a potential cause.
Solution
To sort out this problem, check the mower transmission fuel levels. If you find that they are below the recommended level, then pour more.
Besides that, replacement is the best option if transmission fuel is old and stale.
After that, you need to see the transmission belts. Tighten them accurately if they have got loose and change them if broken.
5. Safety Interlock System Issues
Cub Cadet RZT 42 has curated a safety interlock system to save its customers from accidents.
But it requires a specific method to operate. And if you do not abide by that process accurately, it will not let your mower start.
Solution
To solve this issue, it is a must to follow the proper method for operation for activation.
Here are some tips that can assist you in avoiding this problem.
When it comes to activating the safety interlock system, then you must have pulled the controlling lever.
Moreover, make sure to disengage the PTO switch. And you must have to sit accurately on the mower seat before the activation of the parking brakes.
6. Cutting Problems

Uneven cutting, step cutting, streaking, leaving marks, or not cutting big chunks of grass are some common cutting problems.
They are prevalent but highly depressing as they can destroy the magnificence of lawns.
So, here are some common causes of cutting problems:
- Deflated lawn mower tires
- Imbalance pressure of tires
- Blunt or defective blades
- Misalignment of deck
- Wrongly aligned blades
Solution
To solve the problem, check and inflate the tires or correct the pressure balance if necessary.
After that, check the blades. If they are blunt, then it is imperative to sharpen them so that they perform their job finely.
And if they are broken, take the mower to the technician and replace the blades. You can get your hands on these blades.
You also need to ensure the deck is clean and accurately aligned from both sides, left and right.
A pro tip is to utilize the full-throttle mode to achieve improved mulching.
Also Read: Cub Cadet Mower Deck Problems (Quick Fixes)
7. Ongoing Oil Pressure Issue
When your mower is mowing, keeping track of oil pressure is paramount. But it is extremely difficult to monitor while mowing.
Hence, Cub Cadet RZT 42 has added a feature of an oil pressure gauge for your assistance.
It is located on the dashboard and informs you of any potential issue by blinking the light.
So, if your mower’s LOW-OIL light is blinking, you can solve this issue easily by following methods.
Solution
Firstly check the oil level. If it is dropping below the recommended level, fill it. And the level will be off.
Secondly, check the condition of the oil. If it is old, change it immediately to stop this indicator light. You should also replace the oil filter.
Once you have done with it, check the light after some hours of engine operation. It will surely stop blinking.
Frequently Asked Questions (FAQs)
Why does my Cub Cadet RZT 42 shut off when I engage the blades?
If your mower shuts off when you engage the blades, a damaged safety switch is the possible cause. Ensure it is plugged in correctly.
Why is my Cub Cadet RZT 42 not cutting?
If your Cub Cadet RZT 42 is mowing but not cutting, there can be various potential reasons for this issue.
These include:
1. Worn out or blunt blade(s)
2. Damaged or deflated tires
3. Clogged deck & broken bel
Why does my Cub Cadet RZT 42 shut off when I release the brake?
This issue usually arises when the seat switch is damaged.
Conclusion
Challenges are bound to appear in the world of mowing and maintaining a beautiful yard, even with a reliable companion like the Cub Cadet RZT 42.
The information I’ve shared with you in this article can aid you in tackling those problems. And can keep your mower running smoothly.
Remember, regular maintenance, and timely troubleshooting, go a long way in ensuring the longevity and performance of your Cub Cadet RZT 42.