Common Troy Bilt Mustang 50 Problems(With Solution)

The Troy-Bilt Mustang 50 is a powerful and versatile zero-turn riding lawn mower that is popular among homeowners and professionals alike. 

However, like any piece of equipment, it is not without its issues. 

Let’s jump in.

Common Troy Bilt Mustang 50 Problems

Troy Bilt Mustang 50 Problems

1. The engine won’t start

If your Troy-Bilt Mustang 50’s engine won’t start, there are a few things that could be causing the problem. 

One possible cause is a lack of fuel, so make sure that the gas tank is filled and that there is no debris blocking the fuel line.

Another possible cause is a dead battery, so check the battery’s charge level and consider replacing it if it is low.

2. Engine stalls or runs poorly

If your Troy-Bilt Mustang 50’s engine stalls or runs poorly, there are a few things that could be causing the problem.

One possible cause is dirty air filters, so make sure to check and clean or replace the air filters as needed. 

Another possible cause is a clogged fuel filter, so check and clean or replace the fuel filter as needed. 

It may also be the case of stale or bad fuel, so you can try emptying the tank and refilling it with fresh fuel.

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3. Steering issues

If you are having trouble steering your Troy-Bilt Mustang 50, the problem could be with the steering shaft or the steering sector. Check for any visible damage to these components, and consider replacing them if they are worn or damaged. 

Another possible cause is low fluid levels in the hydrostatic transmission, so check the fluid levels and add more if needed.

4. Mower deck problems

If you are experiencing problems with your Troy-Bilt Mustang 50’s mower deck, such as uneven cutting or difficulty in adjusting the height, there are a few things that could be causing the problem. 

One possible cause is a bent or damaged mower deck, so check for any visible damage and consider replacing the deck if it is worn or damaged. 

Another possible cause is worn or damaged blade spindles, so check the spindles and consider replacing them if they are worn or damaged.

5. Electrical problems

If you are experiencing electrical problems with your Troy-Bilt Mustang 50, such as a non-functioning ignition or headlight, the problem could be with the wiring or the electrical components. 

Check for any visible damage to the wiring and replace any damaged components as needed. 

If the problem persists, you may want to consult a professional to diagnose and repair the problem.

6. Tires are not holding air 

If your Troy-Bilt Mustang 50 is experiencing flat tires, the problem could be a leak in the tire or the valve stem. 

Check the tires for any visible punctures or holes and repair them with tire sealant or patch kits. 

If the problem persists, it’s best to replace the tire, as it can be a safety hazard.

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7. Transaxle issues 

The Troy-Bilt Mustang 50 is equipped with a hydrostatic transaxle that is responsible for providing power to the wheels.

If you are experiencing issues with the transaxle, such as difficulty in moving or a loss of power, the problem could be a lack of lubrication. To fix this, simply check the oil level and add more if needed.

Another possible cause of transaxle problems is debris or debris build-up, which can block the transaxle’s cooling fins, causing it to overheat. Clean the fins and remove any debris to resolve this issue.

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8. Drive belt problems 

The drive belt is responsible for transmitting power from the engine to the mower deck and other components.

If the belt is loose, damaged, or broken, it can cause issues such as the mower deck not engaging or the mower not moving.

To fix this, check the belt for any visible damage, and if it’s damaged, replace it. also, check the tightness of the belt, if it’s loose, adjust it accordingly.

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ProblemSolution
Engine won’t startCheck that there is fuel in the gas tank and that there is no debris blocking the fuel line. Check the battery’s charge level and consider replacing it if it is low.
Engine stalls or runs poorlyCheck and clean or replace the air filters as needed. Check and clean or replace the fuel filter as needed. It may also be the case of stale or bad fuel, so you can try emptying the tank and refilling it with fresh fuel.
Steering issuesCheck for any visible damage to the steering shaft or the steering sector, consider replacing them if they are worn or damaged. Check the fluid levels of the hydrostatic transmission and add more if needed.
Mower deck problemsCheck for any visible damage to the mower deck and consider replacing the deck if it is worn or damaged. Check the blade spindles, and consider replacing them if they are worn or damaged.
Electrical problemsCheck for any visible damage to the wiring and replace any damaged components as needed. If the problem persists, consult a professional to diagnose and repair the problem.
Tires are not holding airCheck the tires for any visible punctures or holes and repair them with tire sealant or patch kits. If the problem persists, it’s best to replace the tire.
Transaxle issuesCheck the oil level and add more if needed. another possible cause of transaxle problems is debris or debris build-up, which can block the transaxle’s cooling fins, causing it to overheat. Clean the fins and remove any debris to resolve this issue.
Drive belt problemsCheck the belt for any visible damage and if it’s damaged, replace it. Also, check the tightness of the belt, if it’s loose, adjust it accordingly.
Troy Bilt Mustang 50 Problems

Hydrostatic transaxle problems and Solutions

ProblemSolution
Low or no oil pressure in the transaxleCheck the oil level and add oil if necessary. If the oil level is correct, the oil pump may be faulty and should be replaced.
Grinding or whining noise coming from the transaxleCheck for worn or damaged gears and bearings. If found, the transaxle should be rebuilt or replaced.
Leaks from the transaxleInspect the transaxle for cracked or damaged seals and gaskets. Replace as necessary.
Loss of power or slow to respond when shifting gearsThe transaxle control valve may be malfunctioning, check for a proper valve function, if faulty the valve or solenoids need replacement.
Difficulty or inability to shift into reverse or a certain gear rangeCheck the linkage to the transaxle and make sure it is properly adjusted and lubricated. If the problem persists, the gear synchronizers or gear sets may be worn or damaged and require replacement.
Hydrostatic transaxle problems and Solutions

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Troy Bilt Mustang 50 Hydrostatic Transmission Problems

Low Fluid Level

Check the fluid level in the transmission. If it’s low, you may need to add more hydraulic fluid to the system.

Refer to the owner’s manual for the specific type and amount of fluid required.

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Fluid Contamination

If the fluid appears dirty or contaminated, it may be causing problems. In such cases, it’s advisable to drain and replace the hydraulic fluid entirely.

Belt Tension

Ensure that the drive belt responsible for transferring power from the engine to the hydrostatic transmission is properly tensioned.

If it’s loose or worn out, it may slip, resulting in transmission issues. Adjust or replace the belt as needed.

Mechanical Damage

Inspect the transmission for any signs of physical damage, such as leaks or broken components.

If you notice any issues, it’s best to consult a professional technician or contact Troy-Bilt customer support for assistance.

Air in the System

If there’s air trapped in the hydraulic system, it can cause erratic transmission behavior.

Try purging the system by cycling the transmission forward and backward several times while the engine is running. This process helps remove air bubbles and ensure smooth operation.

Filter Replacement

The transmission may have a filter that requires periodic replacement.

A clogged or dirty filter can restrict fluid flow, leading to transmission problems.

Troy-Bilt Mower Deck Problems

Uneven Cutting

If the mower deck is cutting unevenly, it could be due to an improperly leveled deck.

Check the deck’s level by measuring the height at various points across the width of the deck. Adjust the deck’s height as necessary to ensure an even cut.

Blades Dull or Damaged

Dull or damaged blades can result in poor cutting performance. Inspect the blades for any signs of wear, such as dullness, chips, or bends.

If the blades are damaged, replace them with new ones. Regularly sharpening the blades can also help maintain cutting performance.

Belt Issues

The mower deck operates using a belt that drives the blades. If the belt is worn, loose, or damaged, it can cause problems.

Check the condition and tension of the belt. Replace it if it’s worn or damaged, and adjust the tension if necessary.

Clogging or Buildup

Grass clippings, debris, and moisture can accumulate underneath the mower deck, causing clogs and buildup.

Clean the underside of the deck regularly, especially after each mowing session, to prevent clogging and ensure proper airflow.

Worn or Faulty Deck Components

Inspect the mower deck for any worn or faulty components, such as pulleys, spindles, or idler arms.

If any parts are damaged or not functioning correctly, replace them with new ones.

Improper Deck Installation

If you’ve recently removed or reinstalled the mower deck, ensure that it’s properly aligned and attached according to the manufacturer’s instructions.

Improper installation can cause issues with cutting performance and deck operation.

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Troy Bilt Zero Turn Hydrostatic Transmission Problems

Low Fluid Levels

Check the fluid level in the hydrostatic transmission. If it’s low, top it up with the appropriate fluid as specified in your owner’s manual. Be cautious not to overfill.

Contaminated Fluid

If the transmission fluid appears dirty or contaminated, it may need to be drained and replaced.

Consult your owner’s manual for the recommended fluid type and the proper procedure for fluid replacement.

Drive Belt Issues

Inspect the drive belt that connects the engine to the hydrostatic transmission. Ensure that it’s not worn, damaged, or slipping. Replace the belt if necessary, following the manufacturer’s instructions.

Filter Clogs

The hydrostatic transmission may have a filter that can become clogged over time. Check if the filter is dirty or obstructed. If so, clean or replace it as recommended in your owner’s manual.

Pulley Misalignment

Verify that the pulleys on the hydrostatic transmission and engine are properly aligned.

Misalignment can cause excessive wear on the drive belt and affect the transmission’s performance. Adjust or realign the pulleys as needed.

Mechanical Damage

If none of the above steps resolve the issue, there may be mechanical damage to the hydrostatic transmission.

In such cases, it’s advisable to contact Troy-Bilt customer support or a qualified technician to diagnose and repair the specific problem.

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Troy-bilt Mower Deck Problems

Uneven Cutting

If the mower deck is cutting the grass unevenly, it could be due to an uneven deck or blades that are dull or damaged.

Check the deck for any signs of damage or misalignment. Sharpen or replace the blades if necessary.

Poor Cutting Performance

If the mower deck is not cutting the grass cleanly or leaving behind uncut patches, it could be due to dull or worn blades. Sharpen or replace the blades as needed.

Belt Slippage

If the mower deck belt is slipping or coming off frequently, it may be due to improper tension or wear.

Inspect the belt for signs of damage or excessive wear, and replace it if necessary. Adjust the tension according to the manufacturer’s specifications.

Excessive Vibration

Excessive vibration in the mower deck can be caused by an unbalanced blade or a damaged spindle.

Inspect the blades for balance and replace any damaged ones. Check the spindles for any signs of wear or damage and replace them if needed.

Clogging and Clumping

If the mower deck is clogging or clumping grass clippings, it could be due to a buildup of debris or a dull blade.

Clean out any debris from the underside of the deck and ensure that the discharge chute is clear. Sharpen or replace the blades to ensure clean and efficient cutting.

Deck Height Adjustment Issues

If you’re having trouble adjusting the deck height or if it doesn’t stay in the selected position, it could be due to a faulty height adjustment mechanism.

Inspect the deck height adjustment mechanism for any damage or wear, and replace any worn or broken parts.

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Troy-Bilt zero turn Mower Problems

1. Engine Problems

If the mower’s engine is not starting or running rough, it could be due to issues with the fuel system, spark plug, or air filter.

Make sure the fuel tank is filled with fresh gasoline, the spark plug is in good condition, and the air filter is clean.

2. Battery Issues 

If the mower’s battery is not holding a charge or the electric start is not working, check the battery connections for corrosion and ensure the battery is fully charged. If the battery is old or damaged, consider replacing it.

3. Uneven Cutting

If the mower is leaving patches of uncut grass or cutting unevenly, it might be due to a dull or damaged cutting blade. Sharpen or replace the blades regularly to maintain a clean cut.

4. Loss of Power

If the mower is losing power or struggling to move, it could be due to a loose or damaged drive belt. Check the belts and pulleys for wear and tension.

5. Hydrostatic Transmission Issues

Some users have reported problems with the hydrostatic transmission not engaging or disengaging correctly.

Low hydraulic fluid levels, air in the system, or a faulty transmission could all be to blame for this.

6. Vibrations and Noises

Unusual vibrations or noises while operating the mower may indicate loose or damaged components. Inspect the mower for loose bolts, damaged pulleys, or worn bearings.

7. Steering Problems

If the mower’s steering is not responsive or jerky, it might be due to loose or damaged steering components. Check the steering linkage and make sure it’s properly lubricated.

8. Clogged Grass Chute

Grass clippings can build up in the chute and discharge area, causing blockages. Regularly clean the chute to ensure proper grass flow.

9. Excessive Fuel Consumption

If your mower is using more fuel than usual, it could be a sign of engine or carburetor issues. Have a qualified technician inspect and service the engine if needed.

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Troy bilt mustang 50 won’t move

  • Engage the Parking Brake: Ensure that the parking brake is disengaged. If it’s engaged, the mower won’t move.
  • Check the Drive Belt: Inspect the drive belt for any damage, wear, or slack. If it’s loose or damaged, it may need to be tightened or replaced.
  • Look for Obstructions: Check the area around the mower deck and wheels for any debris, branches, or objects that might be obstructing the movement of the mower.
  • Check the transmission: If the drive belt appears to be in good condition, the issue may be with the transmission. Ensure that the transmission is in the correct gear or drive setting. If it’s not engaging, there could be a problem with the transmission itself, which may require professional repair.
  • Inspect the hydrostatic transmission fluid. Some Troy-Bilt models have a hydrostatic transmission that requires fluid. Check the fluid level to ensure it’s at the recommended level. If it’s low, top it up with the correct type of hydrostatic transmission fluid as specified in your owner’s manual.
  • Check for a Damaged Drive Control Cable: Examine the drive control cable for any damage or disconnection. If the cable is damaged or disconnected, it won’t engage the transmission properly.
  • Tire Pressure: Verify that the tire pressure is correct. Low tire pressure can affect the mower’s ability to move. Refer to your owner’s manual for the recommended tire pressure.
  • Engagement of the PTO (Power Take-Off): Ensure that the PTO lever or switch is in the “Off” position when you’re trying to move the mower. Engaging the PTO will activate the mower blades but prevent the mower from moving.
  • Engine Speed: Make sure the engine is running at the correct speed. If it’s running too slow, the mower may not move properly. Adjust the throttle as needed.

Final Remarks

The Troy-Bilt Mustang 50 is a reliable lawn mower with a great balance of power and maneuverability. 

By understanding the common problems and their solutions, you can easily troubleshoot any issues that may arise and keep your lawn mower running smoothly for years to come. 

Remember to consult the owner’s manual for specific troubleshooting information, and be sure to follow all recommended maintenance procedures to keep your Troy-Bilt Mustang 50 in top condition.

Read How to Put a Troy-Bilt Lawn Mower in Neutral(In 3 Steps)

FAQ

What are some common problems associated with the Troy Bilt Mustang 50? 

While the Troy Bilt Mustang 50 is generally a reliable mower, there are a few common problems that users may encounter.

These include issues with the engine, cutting performance, and drive system.

Why won’t my Troy Bilt Mustang 50 start?

There are several potential reasons why your mower may not start.

Check the fuel level and ensure it is fresh and properly mixed with oil if using a two-stroke engine.

Verify that the spark plug is clean and properly connected. Also, check the air filter for clogs or debris that may be restricting airflow.

Why does my Troy Bilt Mustang 50 stall during operation?

There are numerous causes of engine stalling. Ensure that the fuel system is clean and the fuel lines are not clogged.

Check the spark plug for fouling or wear and replace it if necessary.

Also, make sure the air filter is clean and the blades are sharp, as a dull blade can strain the engine.

What should I do if my Troy Bilt Mustang 50 is not cutting evenly?

Uneven cutting may be due to blade-related issues. First, make sure the cutting deck is level and not misaligned.

Inspect the blades for damage or dullness and replace them if necessary. Also, check for any debris or buildup around the blades that may be obstructing the cutting process.

Why is my Troy Bilt Mustang 50 vibrating excessively?

Excessive vibration can indicate an imbalance in the cutting deck or a loose blade. Inspect the blades and tighten any loose bolts or nuts.

If the problem persists, consider having a professional service technician examine the mower for any underlying issues.

How can I resolve issues with the drive system on my Troy Bilt Mustang 50?

If you’re experiencing problems with the drive system, such as difficulty shifting gears or a loss of power, check the drive belt for wear or damage. Replace the belt if necessary.

Additionally, inspect the pulleys and tensioners for proper alignment and function.

What maintenance steps can I take to prevent problems with my Troy Bilt Mustang 50?

Regular maintenance is crucial for keeping your mower in optimal condition. Perform routine tasks such as oil changes, air filter cleaning and replacement, and blade sharpening.

Keep the mower clean and free of debris after each use. Following the manufacturer’s maintenance schedule and guidelines will help prevent potential problems.

Where can I find assistance for more complex issues with my Troy Bilt Mustang 50?

If you encounter more complex problems or require technical assistance, it is recommended that you contact Troy Bilt customer support or consult an authorized service center.

They will have the expertise to diagnose and address any major issues with your mower.

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George Bill
George Bill

George Bill is a Mechanical Engineer by Profession and an avid gardener and has been mowing his lawn for over 20 years. He has used a variety of different mowers during this time.
George is an expert at maintaining his mowers and over the years, he has learned many tricks and techniques for getting the best results from his mowers and is always happy to share his knowledge on this site.