Cub Cadet RTZ 50 Problems

When maintaining your lawn, you want a perfect mower that is the top contender on most people’s buying list. Despite most mower reliability, some issues will be bound to halt your operations anytime. 

A Cub Cadet Rzt 50 comes with many features but not without problems. If you need to be better versed in handling Cub Cadet Rzt 50 issues, let me help you learn the possible problems and their solutions to prevent setbacks and interrupted mowing experiences.

13 Cub Cadet Rzt 50 Problems

Hydrostatic Transmission Problem 

Hydrostatic transmission issues are not uncommon when you ride a mower more than a year or two old. You will likely experience this problem when you operate a mower that is too old or has a low oil level or old gas. If the oil level is insufficient, the hydrostatic transmission will weaken to pull a ride properly. 

If this is the case, follow the manufacturer and replace the fuel 2 to 3 times a year, at least for the sake of the hydraulic system’s longevity. On top of that, you should also look at your deck belt. 

You may know this; the deck belt is the one that is responsible for making the pump work efficiently. If there is any side damage, get a new deck belt for replacement. The same advice applies if anything goes with the tension pulleys worn out.

Cub Cadet Rzt 50 Smoking

Something must be wrong if you notice any smoke coming from your Cub Cadet Rzt 50. There can be the main factor to consider but in most occurrences, excess oil burns more than air flowing inside the engine tends to be the cause. A Cub Cadet Rzt 50 can consume more fuel gas because of engine compression. 

You first want to stop your Cub Cadet Rzt 50 from consuming such excessive fuel while setting the clearance and valve timing accordingly when cylinder compassion pressure is low. 

Avoid pouring too much oil than recommended by manufacturer specs; it could otherwise result in engine pressure build-up and loss of crankcase vacuum. In turn, it will affect the engine components and internal parts. 

You might notice engine cranks when the dipstick, tube, or valve is incorrectly seated. It would help if you replaced all kinds of damaged components in your Cub Cadet Rzt 50 to restore the crankcase vacuum pressure and solve your Cub Cadet Rzt 50 smoking issue. 

Complete an assessment of your Cub Cadet Rzt 50 overall state before deciding what and how to fix the issue yourself. Smoke could also generate due to the low-quality spark plug hindering the motor. Bring the mower to your nearby authorized dealer technician or mechanic.

The mower Stops/Dies While Mowing.

Another common problem with the Cub Cadet Rzt 50 is sudden power loss. Commercial gardeners often complain about power loss problems for various reasons, like harmful gas, clogged air filter, dirty carburetor, fuel lines, or broken cooling fans. 

No matter the reason, you can always find a proper solution for each of your Cub Cadet Rzt 50 problems & address it quickly. 

Firstly check your Cub Cadet Rzt 50 fuel tank and look for any stale gas that has been sitting in it for a while. If you notice some, drain the fuel tank to empty it.

You can also take a stabilizer to clean your Cub Cadet Rzt 50 fuel system. During the clinic process, you should also check the cooling fins and gas lines to clean out debris, dirt, engine oil, or other things blocking fuel and airflow inside your Cub Cadet Rzt 50 

Even though cleaning some Cub Cadet Rzt 50 components will help it work, the damaged ones should be replaced immediately. If not adjusted or replaced, it will cause ultimate damage to other internal pieces and the engine.

The Cub Cadet Rzt 50 Won’t Start.

When your Cub Cadet Rzt 50 cannot start its engine, you should blame the regular maintenance. In most cases, the operator error or mistake results in the Cub Cadet Rzt 50 not starting. Natural care can be very vital for Cub Cadet Rzt 50 longevity and proper function. You don’t need to panic because you can solve this issue by checking a few components and doing quick repairs. Firstly, you need to check whether the free control is engaged correctly. When you start a mower, keeping the control lever in a neutral position before you operate the mower is very important.

Insufficient/Bad Oil

According to our expert, you should first check your mower’s fuel tank before riding it. No matter how much fuel your Cub Cadet Rzt 50 already has, if it is of poor grade. Your mower should always have enough fuel tank level, or it can cause trivial issues. 

Bad oil will always result in the Cub Cadet Rzt 50 stalling and not starting correctly. If bad oil is the issue, fill the tank with high-grade fuel to the designated area marked by manufacturing specs. And, also use the measurement of the oil using a dipstick. It is also crucial to replace your old oil with your new fuel, as old gas can damage your Cub Cadet Rzt 50 fuel system and engine.

Defective Spark Plugs

Besides lousy oil, the other issue that arises while operating a mower is faulty spark plugs. Suppose you notice any spark plug that is dirty or faulty; repair or replace it as needed. Plus, the spark plug is crucial for igniting fuel in your engine and generating enough power.

If any spark plug wire is loose, it will result in a bad connection and lead to your Cub Cadet Rzt 50 not starting.

This can cause any mower to stop reversing once you try to run it through your lawn. Before replacing any old spark plug, ensure there is no other defective connector. It is better to get a spark plug tester & check if any of the connectors need new displacement.

Dirty Fuel Filter

If the fuel filter is clogged, proper airflow in the fuel line will be restricted. After that, it will block your Cub Cadet Rzt 50 from starting.

The best solution is to get a new filter. Also, if the air filter is filthy, it will hinder your Cub Cadet Rzt 50 startup. You should always check all kinds of debris, dirt, and grass residue accumulated in the air filter over time. 

Taking care of an air filter and cleaning it is the quickest solution and prevention you can ever take. If the air filter looks significantly deteriorated or flawed, give it a shot at a new replacement.

The Cub Cadet Rzt 50 Won’t Move Forward Or Reverse.

If the tensioner Pulley or the drive belt wears out or gets damaged, the mower will fail to move forward or down rivers. There can be many factors and causes of this issue. But the first thing to look at is the belt’s grip on the pulleys. 

There will be cases where the belt falls off. And the best you can do is tighten its grip. Besides this, you might notice the pulleys and belts being wholly damaged. In that case, both need a proper replacement.

If this doesn’t turn out to be problem-solving for you, you should try to replace the axle keys and springs, as it can also interfere with your Cub Cadet Rzt 50 reverse module and functions. 

Cub Cadet Rzt 50 Blades Won’t Engage

Sometimes Cub Cadet Rzt 50 blades fail to engage. If you notice your Cub Cadet Rzt 50 engine belt or blades refusing to engage amid cutting operation, there must be significant damage forcing the engine to stall.

Before you take the time to replace the strap of your Cub Cadet Rzt 50 right away, check if there is another better option to consider. The worm out belt should always be replaced, no matter how much you try to repair it.

Any damaged engine belt will vastly affect your Cub Cadet Rzt 50 engine’s performance and blade engagement. Replacing any damaged belt of a mower is a no-brainer for anyone. Even a novice can understand how to mount a drive belt correctly.

Uneven Cutting

It is common to experience some uneven cutting due to steep inclines in your yard. However, a Cub Cadet Rzt 50 can sometimes produce uneven cuttings due to improper settings. If this is the problem, you should check the engine speed first. 

If the engine speed is plodding, it will result in uneven cuts. Also, bent spindles, loose bearings, and unbalanced blades can cause uneven cuttings. Therefore, you should be up for replacement anytime to avoid further setbacks and problems. Also, make sure all four tires are leveled and equally pressured. 

Gas Leak

When you operate a Cub Cadet Rzt 50 addressing any oil leak in an urgent matter is essential. It can be alarming and difficult to find the exact spot of oil leakage as the fuel evaporates quickly in the air. Even though it is hard to notice oil leakage immediately, you will likely smell it from storage. 

Sometimes replacing the loose cap solves the issue and prevents further fuel leakage. However, the problem can still arise from other components. Other components like fuel filters, fuel pumps, fuel tanks, carburetors, and shut-off valves get damaged, and the fuel supply will be drastically affected, leading to oil leakage. 

The best you can do is first to drain all the excess oil from the mowers and do a complete inspection of your unit while looking for anything that needs replacement because of leaks and cracks.

Cub Cadet Rzt 50 Steering Problems 

Even though riding a Cub Cadet Rzt 50 is easy, you sometimes encounter steering problems. If the tire pressure is balanced correctly, you will experience good maneuverability while riding a vehicle. It is essential to keep the tire pressure according to the manufacturer’s specification, always. 

If the dampers are wrong, this could be the reason why your track-cutting deck is mowing in the wrong direction. It is essential to replace all kinds of bad dampers as soon as possible before you start the engine. 

Other than this, check the different components of your Cub Cadet Rzt 50 like gears, washers, and bushings. If anything is worn out, your vehicle will continue to have improper maneuverability and steering problems.

Cub Cadet Rzt 50 mowing Slow

If your mower is riding you very slowly, there might be a clogged component. If the carburetor or the fuel line is blocked, you want to fix this immediately. Also, check the fuel caps and the air filter, as this could cause the Cub Cadet Rzt 50 to mow slowly.

Cub Cadet Rzt 50 Vibrates Excessively 

It is not uncommon for tractors and mowers to vibrate a bit when you operate them. When you mow over a rough surface, significant material leads, sewer lids, and rock can loosen damaged parts of your mower that might be causing excessive vibration. 

Excessive vibration can be very distracting and sometimes uncomfortable if it persists. In most cases, loose engine bole is the main culprit of excessive mower vibration. Tightening it will solve the problem. 

Other than this, some loose engine bolts may go missing, causing the shaking. If the mower blade is not mounted correctly or is damaged, repair it as soon as possible. Unfortunately, improper installation of an unbalanced edge can also make your Cub Cadet Rzt 50 vibrate while in operation. 

It would help if you also cleaned all kinds of debris in your Cub Cadet Rzt 50 spindle to keep the unit for a prolonged period. You should replace all types of damaged components, especially if it is a bearing, belt, or blade.

Battery Dies Abruptly

If you suffer from poor battery performance in your Cub Cadet Rzt 50 it might need a replacement. When a mower is new, it starts smoothly and then suddenly stops working with age. This problem could also arise from a dirty spark plug. If your battery is dying very quickly, there might be a problem with the charging system or the battery itself. 

If the spark plug is dirty, engine malfunctions during ignition are likely to occur. The solution can be as simple as immediately cleaning or replacing these spark plugs. If you find the battery is the actual culprit, replace it. If it’s the battery charging system, get it checked by the authorized manufacturer or technician.

Cub Cadet Rzt 50 Bagging Issues

Any problem related to mower disposal, mulching, and bagging function interferes when there is a problem with the engine running. Make sure you use the disposing and begging process at full throttle through the starter rope. Also, check the whole unit and inspect whether the engine is running fine.


How Many Hours Is A Care Mower Good For?

A Cub Cadet Rzt 50 is good for at least 600-800 hours. However, if you run and use it sparingly through regular maintenance, your mower can last up to 15 years. If the Cub Cadet Rzt are not properly cared for, their lifespan may be cut in half.

Why Does My Cub Cadet Rzt 50 Mower Stall When I Engage The Blades?

If the grass box is not tightly closed, your Cub Cadet Rzt 50 may stall when using the blades. Other than this, ensure the belt and the pulley are aligned. If there is any sensor connection loose or damaged, replace it. Quality safety switches and spark plugs can also hinder mower blade function. 


All the common problems I have mentioned are not always hard to handle or intimidating. However, if you encounter any internal engine issues with your unfamiliar Cub Cadet Rzt 50, consult the user manual or get the unit to your nearest professional mechanic or technician for full inspection. 

Maintaining equipment with a mechanical component is more involved than a bit of mowing. While inspecting and operating a mower, you should keep safety as your top priority. Do check our other articles on mower problems, till then, take care and goodbye.

Similar Posts