Cub Cadet RZT 42 Problems [Solved]

Cub Cadet RZT 42 Problems

Cub Cadet is a company that builds equipment to make the outdoor life of people convenient with a belief in possibilities. Cub Cadet RZT-42 zero turn mower is a quality product made by it. But unfortunately, people are facing a lot of Cub Cadet RZT 42 problems while using this zero-turn mower.

Mowing is a healthy activity but gets ruined if you are having trouble with your mower and your mowing time becomes repairing time with empty pockets.

The Cub Cadet RZT-42 is a great lawnmower, but it does have some flaws. If you’re looking for an all-in-one solution to these problems then keep reading!

We’ll show how our fixes can help fix your Cub Cadet RZT 42 problems quickly and easily without needing any expensive parts or service visits from professionals who are only going to be able to do so much as partway through restoring functionality back up again once everything has been replaced appropriately anyway – right?

By researching this mower along with the reviews of its users, we have enlisted the following major Cub Cadet RZT 42 problems. And we have tried to figure them out with provided solutions.

4 Major Cub Cadet RZT 42 Problems

The Cub Cadet RZT-42 is a popular piece of equipment among its users, but it doesn’t come without some problems. The following are just some major ones that often pop up – read more about each one below for solutions!

  1. Hour meter issues.
  2. PTO engaging and disengaging issues.
  3. Ongoing oil pressure issues.
  4. Left-hand hydro transmission issues.

1. Hour meter issues

Major Cub Cadet RZT 42 Problems

Zero-turn mowers are great for keeping your yard looking good and being easy on your pocket. The hour meter in them ensures that they’re always ready, while the maintenance schedule will help ensure its longevity!

The hour meter starts counting the working hours when you put the start key on. Systematically, It should stop counting when the mower stops.

Cub Cadet RZT 42 Problems-Hour Meter


Unfortunately, stopping the machine does not stop counting on the hour meter. moreover, With time, at a certain point, the hour meter in Cub Cadet RZT 42 stuck and stop tracking the further working hours. It’s one of the most common and major cub cadet RZT 42 problems that it continues to count the working hours during the rest position.

This hour continuation leads to the following sub-issues;

  • Hour mismanagement.
  • The warranty period got disturbed because the warranty of the machine was based on the hours shown on the hour meter.
  • Battery discharging issue even at the stop position.


If you are facing any of the mentioned issues and sub-issues, then you have to follow the following guide to solve your problem;

  • Always make sure to take the key out when you had done with the mowing session to save your warranty and battery for the right time.
  • Make sure to turn the key off because the hour meter of the Cub Cadet RZT-42 does not track the engine hour, but it does follow the hours whenever the key is on.
  • Be aware that every second when the key is on, it is ticking away the warranty of your mower.

2. PTO Engaging and Disengaging Issues

Frequent Cub Cadet RZT 42 Problems

The power take-off (PTO) switch in the mower is to engage and disengage the blades and deck of the mower during the mowing session.

Cub Cadet RZT-42 has a PTO switch for the same purpose, and it has labels on it for engaging and disengaging;

  • Pull the switch to engage the blades.
  • Push the switch to disengage the blades.
Cub Cadet RZT 42 Problems-PTO Switch


In most of the Cub Cadet RZT-42 models, people are experiencing the issue regarding the PTO switch and complaining that when they pulled the switch up to engage the blades, the blades weren’t engaging. And similarly, sometimes facing the same case with the disengaging.

It could lead to the following issues;

  • Problem with the switch.
  • The electric clutch issue.
  • Interlock issue.


We are providing you with the best possible solutions for these types of Cub Cadet RZT 42 problems regarding PTO switch if you are facing relative issues;

  • Firstly, replace the PTO switch and the fuses attached to the 12-volt battery.
  • While changing the PTO switch, check the voltage flow and whether the voltage is flowing all over the switch or not because the 12 volts of the battery need to flow through the switch to keep the PTO working. Otherwise, the switch has been electrically shorted.
  • Replace the clutch with a new one along with a new switch, and use a couple of appropriate size of fuses for proper flow of current to make the switch and clutch keep working.
  • Make sure to check the resistance across the clutch to fix it; resistance must be 2.5 ohms for proper functioning.
  • Check the Air-gap pressure to deal with the interlock issue.

3. Ongoing Oil Pressure Issues

Most Common Cub Cadet RZT 42 Problems

It is necessary to have a check on oil pressure during the mowing session. to make it convenient, the manufacturers have put an oil pressure gauge on the meter to aware you of the oil pressure.

The dashboard of the Cub Cadet zero-turn mowers includes an hour meter, Low oil or time for an oil change, PTO, and other lights.

Cub Cadet RZT 42 Problems-Oil Pressure


People using Cub Cadet RZT-42 have a frequent problem with this oil pressure indicator that the LO-OIL indicator is at warning even after filling the oil. The light is always blinking for refilling the oil.

If any of you is experiencing the following issue with this oil pressure indicator, then we have researched a lot to solve these kinds of Cub Cadet RZT 42 problems.


If the lo-oil light is blinking, it can be because of 2 reasons;

It is Showing The lo-oil Level:

The LED is blinking to show that the oil is not enough to run the engine. So you have to fill it to the indicated point to turn the LED off.

Oil Change And Filter Replacement:

But if the LED is still blinking and it’s frequently warning the lo-oil indication, then it means that it is the time to perform an oil change and the mower needs oil filter replacement.

Perform the oil change process along with the oil filter replacement according to the method given in the user manual.

Then, after a few hours of engine running, the light will reset itself and will turn off automatically.

4. Left-Hand Hydro Transmission Issues

Common Cub Cadet RZT 42 Problems

Cub Cadet RZT-42 has hydro-gear EZT 2200 transaxle transmission. The Cub Cadet Company has specifically designed this transmission for its mower to make the zero-turn mower more sturdy.

Cub Cadet RZT 42 Problems-Left-hand hydro transmission


Unluckily, people using Cub Cadet RZT-42 are suffering from issues related to left-hand hydro transmission. The transmission on the left side becomes weak after some use.

The transaxles and the transmission have a direct impact on the speed and the performance of the mower. The weak transmission strongly affects the speed, performance, and efficiency level of your mower.

It also raises the following issues if not prescribed well;

  • It will affect the bypass lever.
  • Weakens the parking brake system of the mower.
  • The speed of the mower reduces with the weakening of the lollipop linkage of the zero-turn mower.


If you are experiencing the same issue with the transaxle or the transmission of your zero turn mower, then we are providing the method to get rid of the following problem. And it will help you to avoid the following mentioned issues by curing your transmission step by step;

  • Take the transaxle out of the machine by unbolting it. And remove the pulley from it.
  • Then remove the flip plug to drain all the oil out of the unit.
  • Then remove all external parts of it, which includes the parking brake gear, and the lever that helps the mower go forward and reverse.
  • Try to keep all the parts together after loosening them to make rebuilding an easy task.
  • Open the entire unit by removing all the bolts on top of it.
  • Remove the gears, washers, and bearings at the inner side.
  • Make sure to clean the entire transaxle after removing it from the machine with the greaser, brushes, and hose to remove as much dirt as possible.
  • Check the center section and the motor of the unit, it may have grooves on it, which is the main reason it weakens the transaxle and the transmission.
  • Put fresh oil to grease the unit, and use high-quality sandpaper to make it free from grooves. Put the sandpaper on a flat surface like wood or mirror, and rub the motor on it in a circular motion. Do this until it gets smooth.
  • The smoother unit will provide you with a strong transaxle.
  • After getting the smoother motor, reinstall all the parts back the way you opened the transaxle unit.
  • Apply the RTV stick before putting the cover on to close the unit properly.
  • Put all the bolts on and tie them up well to make it capable of functioning correctly. Put all the seals back.
  • Reassemble the fan and the pulley in reverse order carefully.
  • Fill the unit with the recommended motor oil according to the user manual. It will take almost i.75 quarts to fill this Cub Cadet left-hand hydro transmission unit.
  • Reinstall this unit in the machine by bolting it up in the machine properly.
  • After reinstallation, start the mower, run it on the full throttle, and check the transaxle by moving the engaged bypass lever forward and reverse several times.
  • Repeat the above step with the disengaged bypass valve. And then check the fluid afterward and add as needed.

Follow the guide provided, step by step to fix your transaxle issue.

Final Words

It’s become disappointing and hopeless when you are not getting the desired results even after spending countless money.

The purpose of writing this article is to help the readers with Cub Cadet RZT 42 problems by providing them with all the possible solutions to the issue.

Hope it helps!

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