12 Bad Boy Mowers Problems: Dealing with Common Issues

By | January 29, 2024

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As a seasoned lawn care specialist with over a decade of hands-on experience in maintaining and repairing Bad Boy mowers, I bring a wealth of knowledge to this discussion about Bad Boy mower problems.

My aim is to provide you with concise, actionable advice that addresses common issues you may encounter with these machines.

Trust in my expertise as we delve into the specifics of each problem, offering you the clarity and confidence needed to maintain your mower’s performance and longevity.

Quick Summary

  • Deck Lift System Problem: Common issues with the deck lift system in Bad Boy mowers, particularly focusing on problems caused by rust in the screw shaft’s sleeve and failures in the actuator, which can hinder the lifting mechanism.
  • Transaxle and Hydraulic Issues: Highlights the frequent problems related to the transaxle and hydraulic systems in these mowers, such as power transmission issues and hydraulic fluid leaks, which can lead to inefficiency and one-sided pulling.
  • Maintenance and Troubleshooting Tips: Valuable maintenance tips, including regular oil changes, air filter cleaning, blade sharpening, and post-use cleaning, to prevent common issues and prolong the mower’s lifespan.
  • Warranty and Longevity: Importance of utilizing the manufacturer’s warranty for addressing rusting and leaking problems and underscores regular maintenance as crucial for the longevity and optimal performance of Bad Boy Mowers.

Common Bad Boy Mowers Problems

  1. Deck Lift System Problem
  2. Transaxle and Hydraulic Problems
  3. Mower Pulls to One Side
  4. Mower Deck Shakes
  5. Mower Won’t Start
  6. No Power
  7. Spindle Issues
  8. Uneven Cutting
  9. Blades Not Engaging
  10. Battery Draining Fast
  11. Mower Smoking
  12. Turns Off While Mowing

Issue #1: Deck Lift System Problem

The electric deck lift system of Bad Boy mowers, particularly the malfunctioning of the actuator and the screw shaft sleeve.

The key symptom of this problem is the inability of the screw shaft to move in or out while the actuator is actively spinning, indicating a malfunction in the lifting mechanism.

The primary cause of this issue is often the rusting of the screw shaft sleeve, which can severely impact the mower’s functionality, especially for those relying on it for regular lawn maintenance.


  • Symptom Recognition: Identify the problem by observing if the screw shaft fails to move while the actuator is spinning.
  • Initial Troubleshooting: Start by removing the screws from the actuator for a thorough inspection, particularly looking for signs of moisture and rust.
  • Cleaning and Maintenance: If rust is found on the screw shaft sleeve, clean it thoroughly and apply a generous amount of grease to alleviate the issue.
  • Seeking Professional Help: If the problem persists even after cleaning and greasing, it may be necessary to consult a professional for further assistance.
  • Preventive Measures: Regular maintenance and timely care are essential to prevent such problems. Regular checks can help in early identification and resolution of potential issues.

“After struggling with my Bad Boy Mower’s deck lift, I contacted Ethan D for help. His expertise was immediately evident. Not only did he swiftly fix the lift issue, but he also provided easy-to-follow maintenance tips.

Thanks to Ethan, my mower works perfectly, and my lawn has never looked better. I highly recommend his services to any Bad Boy Mower owner.”

Michael Thompson, Local Homeowner

Issue #2: Transaxle and Hydraulic Problems

Bad Boy Mowers often face issues related to the transaxle and hydraulic systems. The transaxle, responsible for transmitting power from the engine to the wheels, is a common source of problems.

Any malfunction in this component can lead to the mower stopping or functioning inefficiently. Similarly, issues with the hydraulic system significantly affect the mower’s performance.

Problems in this area are typically linked to the hydraulic fluid. Indicators of hydraulic issues include the mower pulling to one side or visible hydraulic oil leaks. These problems can compromise the mower’s efficiency and overall performance.


  • Regular Maintenance of Transaxle: Conduct regular checks and maintenance of the transaxle to ensure it functions correctly.
  • Hydraulic Fluid Inspection and Replacement: Regularly inspect the hydraulic fluid levels and quality. Replace the fluid as needed to prevent leaks and ensure smooth operation.
  • Observation for Symptoms: Be vigilant for signs of hydraulic problems, such as the mower pulling to one side or hydraulic oil leaks.
  • Professional Consultation: For complex issues with the transaxle or hydraulic system, it’s advisable to consult a mower mechanic. They can provide a detailed diagnosis and appropriate solutions to address these specific problems.

Issue #3: Mower Pulls to One Side

A common issue with Bad Boy mowers is the tendency for the mower to pull to one side during operation, leading to uneven lawn mowing and an unsightly pattern on the lawn. This problem can stem from several factors:

  • Pulleys and Drive Belt Issues: A loose or worn-out drive belt, or a misaligned or damaged pulley, can cause the mower to pull to one side. These components need to be checked for any signs of wear or damage.
  • Uneven Tire Pressure: If one tire has significantly lower pressure than the others, it can result in the mower pulling towards the side with the less inflated tire. This issue isn’t exclusive to Bad Boy mowers and can affect any lawn mower.
  • Excessive Vibration: This can cause the mower to veer off course and may be due to various issues, such as a loose part or engine problems.


  • Inspect and Maintain Pulleys and Drive Belt: Regularly check the pulleys and drive belt for alignment, wear, or damage. Replace or adjust as necessary to ensure proper functioning.
  • Regular Tire Pressure Checks: Consistently monitor and adjust the tire pressure on all tires to maintain even pressure, preventing the mower from pulling to one side.
  • Vibration Issue Resolution: If excessive vibration is observed, inspect for loose parts or engine issues. For these more complex problems, it is advisable to seek professional assistance for a thorough inspection and repair.

Issue #4: Mower Deck Shakes

Bad Boy mower deck

A frequent issue with Bad Boy mowers is excessive shaking of the mower deck during operation. This problem goes beyond the normal vibrations expected from the engine and can significantly impact the mower’s usability.

The intense vibrations can disrupt the mower’s trajectory, making it challenging to maintain a straight line and potentially leading to loss of control.


  • Inspect Mower Blades: Check the mower blades for any signs of damage or imbalance. A bent or unbalanced blade is a common cause of excessive deck shaking.
  • Examine Spindle Assemblies and Pulleys: Ensure these components are not worn out or damaged. Wear or damage in these areas can contribute to the shaking problem.
  • Check and Adjust Belts: Verify that the belts are properly tightened and aligned. A loose or misaligned belt can be a significant factor in causing vibrations.
  • Make Necessary Adjustments: After conducting these checks, perform any required deck adjustments or replacements to resolve the issue.

Issue #5: Mower Won’t Start

A common issue encountered with Bad Boy mowers is the inability to start the mower. This problem can be caused by various factors and requires a systematic approach to identify and solve.

The frustration of dealing with a non-starting mower is significant, especially for those who rely on their mower for regular lawn maintenance.


  • Inspect Spark Plugs: Check the spark plugs for dirt or corrosion. Clean them if necessary and ensure they are properly connected. Faulty spark plugs can prevent the mower from starting.
  • Check the Battery: Assess the battery’s condition. A weak or dead battery is a common cause of starting issues. Ensure that the battery is fully charged, and the connections are secure and free from corrosion.
  • Evaluate the Fuel Pump: Verify that the fuel pump is functioning correctly and supplying adequate fuel to the engine. A malfunctioning fuel pump can hinder the starting process.
  • Fuel Quality Check: Make sure there is fresh fuel in the tank. Old or contaminated fuel can cause starting problems.
  • Professional Consultation: If the issue persists after these checks, or if you’re unsure about any steps, it’s advisable to consult a professional for a more thorough diagnosis and repair.

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Issue #6: No Power

The issue faced with the Bad Boy mower was a lack of power, a different and more complex problem than previous ones. This type of problem is often linked to the engine not functioning correctly.

In this case, the main suspect was a fuel supply issue within the engine, which is critical for the mower’s combustion process and overall power output.


  • Engine Inspection: Start by thoroughly inspecting the engine, as it is the core component that drives the mower. Look for any obvious signs of malfunction or irregularity.
  • Address Fuel Supply Issue: Identify and resolve any problems related to fuel supply. In this instance, the issue was with the fuel lines and filter.
  • Clean Fuel Lines: Follow the user manual to properly clean the fuel lines. This process can be somewhat time-consuming, especially for those unfamiliar with mower engines.
  • Replace Fuel Filter: Along with cleaning the fuel lines, replace the fuel filter to ensure unobstructed fuel flow.
  • Regular Maintenance and Checks: Perform regular checks and maintenance of the mower’s engine. Early troubleshooting of minor issues can prevent them from escalating into major problems.

Related: Bad Boy Fuel Gauge Not Working

Issue #7: Spindle Issues

Lawn mower spindle

The seventh issue faced with the Bad Boy mower involved spindle problems, a crucial component in the mower’s operation. Spindle issues can significantly disrupt mowing and lead to various operational problems. Key challenges included:

  • Wobbling Blades: The first indication of spindle issues was the blades starting to wobble, signaling potential problems with the spindle’s bearings.
  • Uneven Cutting Due to Spindle Wear: Worn-down bearings caused the spindle to loosen, leading to uneven blade movement and resulting in a poor, uneven cut on the lawn.
  • Squeaking Noises from Spindle Area: A squeaking noise coming from the spindle area was observed, suggesting a lack of lubrication.
  • Bent Spindle: The spindle was found to be bent, possibly due to hitting a hard object while mowing.


  • Inspect and Replace Bearings: On noticing blade wobble, inspect the spindle bearings. If they are worn out, replace them to prevent further issues.
  • Regular Spindle Maintenance: Conduct regular checks on the spindle for any wear or damage. This helps in maintaining consistent blade performance and quality of cut.
  • Lubricate the Spindle: Ensure the spindle is adequately lubricated to prevent squeaking noises and reduce wear.
  • Check for Physical Damage: Regularly inspect the spindle for any bends or physical damage, especially after hitting hard objects. Replace if necessary.
  • Adopt Preventive Measures: Engage in regular maintenance and be vigilant for early signs of problems. This proactive approach helps in managing and preventing spindle-related issues.

Issue #8: Uneven Cutting

Uneven cutting of the lawn is a common problem with Bad Boy mowers, significantly impacting the aesthetics of your lawn and the overall curb appeal of your property. This issue, characterized by messy and unkempt grass, is primarily caused by:

  • Mower Belt Issues: A loose or worn-out mower belt can impair the blades’ spinning, resulting in uneven cutting.
  • Blade Conditions: Dull or damaged blades can leave patches of uncut grass, contributing to the uneven appearance of the lawn.


  • Regular Belt Checks and Replacement: Periodically inspect the mower belt for signs of wear or damage. Replace the belt if it is frayed, worn out, or loose to ensure optimal blade function.
  • Blade Maintenance: Keep the blades sharp for efficient cutting. If blades are damaged, replace them to ensure they cut the grass evenly.
  • Routine Mower Maintenance: Regularly maintain your Bad Boy mower, paying special attention to the belt and blades. This proactive approach can prevent uneven cuts and ensure a clean, even lawn appearance.

Issue #9: Blades Not Engaging

A common issue encountered with Bad Boy mowers is the mower blades failing to engage. This problem can be particularly frustrating when preparing to mow the lawn, only to find that the mower’s blades are unresponsive.

Various factors can contribute to this issue:

  • Belts: If the mower’s belts are worn out or improperly tensioned, they may fail to engage the blades.
  • Clutch: A malfunctioning clutch that doesn’t release the pulley can prevent the blades from spinning. It may require adjustment or replacement.
  • Pulley: Damaged or misaligned pulleys can impede the engagement of the blades.
  • Switch: A defective switch might not signal the blades to engage, leading to operational failure.


  • Inspect and Maintain Belts: Check the mower’s belts for wear and proper tension. Replace or adjust as necessary to ensure proper blade engagement.
  • Clutch Examination and Repair: Assess the clutch’s condition and function. Adjust or replace the clutch if it is not releasing the pulley effectively.
  • Pulley Check and Alignment: Ensure the pulley is in good condition and properly aligned. Repair or replace any damaged or misaligned pulleys.
  • Switch Testing and Replacement: Test the switch for functionality. If found faulty, replace it to restore proper signaling for blade engagement.

Learn More: Best Blades for Bad Boy Mower [2024 Buying Guide]

Issue #10: Battery Draining Fast

Lawn mower battery

A prevalent issue with Bad Boy mowers is the rapid draining of the battery, which can significantly interrupt regular lawn care activities. This problem can be attributed to a few different factors:

  • Aging Battery: Batteries naturally lose their capacity to hold a charge over time. If the mower’s battery is old and hasn’t been replaced for a few years, its efficiency in holding a charge could be compromised.
  • Faulty Battery Charger: The issue might not always be with the battery itself but with the battery charger. A malfunctioning charger can lead to the battery depleting faster than normal.
  • Usage Habits: Prolonged usage of the mower without adequate breaks for the battery to recharge can contribute to faster battery drain.


  • Battery Replacement: If the battery is old, consider replacing it with a new one to ensure it can hold a proper charge.
  • Inspect and Replace Battery Charger: Check the battery charger for any signs of malfunction. Replace it if necessary to ensure it is charging the battery effectively.
  • Modify Usage Patterns: Allow regular intervals for the battery to recharge during prolonged mowing sessions. This practice can help prolong the battery’s life and maintain its charge capacity.

Issue #11: Mower Smoking

A concerning issue with Bad Boy mowers is the occurrence of the mower emitting smoke during operation. This is not only indicative of underlying mechanical problems but also poses potential risks to the mower’s longevity, user safety, and health.

Key concerns include:

  • Visible Smoke: The sight of smoke emerging from the mower can be alarming, raising fears of fire hazards or a complete breakdown of the machine.
  • Unpleasant Odor: The smoke often carries a strong, unpleasant smell that can be nauseating and linger long after the engine is turned off.
  • Repair and Maintenance Concerns: Dealing with a smoking mower can be daunting, involving significant time, effort, and financial resources to address the issue.
  • Health Risks: Exposure to smoke, particularly from burning engine oil, can be harmful to health and should not be taken lightly.


  • Immediate Inspection: Cease using the mower and inspect it to identify the source of the smoke. Common causes include oil spills on the engine, overheating, or mechanical malfunctions.
  • Professional Diagnosis and Repair: If the cause of the smoke is not immediately apparent or beyond basic troubleshooting, seek professional help for a thorough diagnosis and repair.
  • Regular Maintenance: Conduct regular maintenance checks to identify and address any potential issues before they escalate into more serious problems.
  • Health Precautions: Ensure good ventilation if exposed to smoke and avoid inhaling it. Consider wearing protective gear if necessary.

Issue #12: Turns Off While Mowing

A frequent issue with Bad Boy mowers is the mower unexpectedly shutting off during operation, which is not only frustrating but may also indicate serious problems with the machine. This issue can stem from a variety of causes:

  • Fuel Restrictions or Bad Gas: If the mower has been stored for an extended period without draining the gas, or if low-quality fuel has been used, this can lead to fuel restrictions, causing the mower to stall mid-mowing.
  • Overheating from Dirty or Damaged Cooling Fins: Inadequate heat dissipation due to dirty or damaged cooling fins can cause the engine to overheat and shut off. This is often an overlooked issue but can have significant impacts on the mower’s operation.


  • Fuel Replacement: Drain old gas and replace it with fresh, high-quality fuel. This can resolve issues related to fuel restrictions or bad gas.
  • Inspect and Maintain Cooling Fins: Check the cooling fins for dirt or damage. Clean or replace them to ensure effective heat dissipation and prevent overheating.
  • Professional Diagnosis and Repair: If the mower continues to shut off despite addressing these issues, it’s advisable to take it to a professional for a comprehensive diagnosis and repair.
  • Regular Maintenance: Engage in regular maintenance of the mower to prevent such issues from arising. This includes checking fuel quality and ensuring the engine and its components are in good working order.

Maintenance Tips for Bad Boy Mowers

As we move forward in our discussion, let’s focus on some vital maintenance tips for Bad Boy mowers.

It’s crucial to regularly change the oil, clean or replace the air filter, and sharpen the blades for optimal performance.

Additionally, cleaning your mower after each use is a simple yet effective practice to prolong its lifespan.

Tip #1: Change the Oil Regularly

To keep your Bad Boy mower running smoothly, it’s essential that you don’t put off changing the oil regularly. This easy DIY maintenance step can significantly reduce bad boy mowers problems. Here’s why:

  1. Fresh oil lubricates better: Old, dirty oil can’t lubricate your mower’s engine as effectively, leading to wear and tear.
  2. Prevents buildup: Regular oil changes prevent harmful buildup, keeping your engine clean and running efficiently.
  3. Cooling: Oil helps cool down the engine parts by reducing friction and heat.
  4. Prolongs engine life: Regular oil changes can prolong the life of your mower’s engine, saving you costly repairs or replacement in the long run.

Tip #2: Clean and Replace the Air Filter

New mower air filter

So, why is it crucial for me to regularly clean and replace the air filter on my Bad Boy mower?

Well, a clogged air filter can lead to several bad boy mowers problems. It can choke my mower’s engine of air, causing it to work harder, consume more fuel, and potentially overheat.

The key is, I don’t wait till it’s totally blocked. I clean it regularly and replace it as necessary.

This is tip #2: clean and replace the air filter. It’s a simple, yet effective way to maintain my mower’s performance and longevity.

Trust me, it’s a small investment of time and money that can save me a lot of headache down the road.

Tip #3: Sharpen the Blades

Keeping my mower’s blades sharp is a crucial aspect of maintenance that I can’t afford to overlook. Dull blades are one of the common bad boy mowers problems and they can tear the grass, leaving it susceptible to diseases.

Here’s tip #3 from this article section to help you avoid that:

  1. Inspect regularly: Always check the blades for signs of wear or damage.
  2. Sharpen: If the blades are dull, sharpen them using a blade grinder. But remember, excessively sharpened blades can become weak and break easily.
  3. Balance: After sharpening, balance the blades. An unbalanced blade can cause vibration and damage to the mower.
  4. Replace if necessary: If you can’t sharpen or balance the blades anymore, it’s time to replace them.

Regular blade maintenance will ensure a healthy and tidy lawn.

Tip #4: Clean After Each Use

After ensuring the blades are sharp and balanced, cleaning my Bad Boy mower after each use is a critical maintenance tip to prolong its lifespan and prevent potential problems.

Grass and other debris can accumulate in the mower’s parts, causing it to function less efficiently.

I make sure to clean the mower’s deck, blades, and discharge chute. This isn’t only to prevent grass buildup but also to keep rust at bay, which can significantly shorten the lifespan of Bad Boy mowers.

I also keep an eye out for any signs of rust during my clean-ups.

Regular use without cleaning can lead to more serious, costly repairs down the line. So, I’d rather spare a few minutes after each use to ensure my mower stays in tip-top shape.

Can You Troubleshoot a Bad Boy Mower at Home

I can certainly troubleshoot some common problems with my Bad Boy mower at home. It’s not always a walk in the park, but with a little patience and the right knowledge, I can tackle these bad boy mowers problems head-on.

  1. Engine won’t start: This is a common problem that can often be solved by checking the basics. Is there enough gas? Is the battery fully charged? Are the spark plugs in good shape? If not, it’s time for replacements.
  2. Uneven cuts: This might indicate a problem with the mower’s blades. They could be blunt or damaged, in which case, they’ll need to be sharpened or replaced.
  3. Mower isn’t driving straight: This could be due to tire pressure issues. I make sure to check each tire and adjust the pressure as required.
  4. Overheating: Overheating can lead to major problems. I ensure the engine has enough oil and the air filter is clean.

Troubleshooting these problems at home not only saves me time and money, but also gives me a sense of accomplishment. With these tips, I can keep my Bad Boy mower in top shape and ready for action.

Our Verdict

After thoroughly exploring the common issues with quality Bad Boy mowers and sharing my firsthand experiences, I’ve come to appreciate the importance of regular maintenance and prompt attention to problems.

Personally, I’ve found that dealing with rusting and leaking early on, and utilizing the warranty effectively, can significantly extend the life of these mowers.

Through my journey, the key takeaway for me has been that a well-maintained mower is indeed a long-lasting one. I strongly believe that staying on top of maintenance, from changing oils to cleaning air filters, really pays off in the long run.

Remember, the more care you put into your Bad Boy mower, the more reliable and efficient it will be in keeping your lawn looking its best.

Ethan Dixonete Avatar

Frequently Asked Questions

How often should I replace the blades on my Bad Boy mower?

I replace the blades on my Bad Boy mower once a year, or sooner if they’re damaged. However, I sharpen them every few months to keep them cutting efficiently. It’s all on usage and maintenance.

What type of oil is recommended for Bad Boy mowers?

I recommend using a high-quality 10W-30 or SAE 30 oil for Bad Boy mowers. It’s essential to check the owner’s manual for the manufacturer’s specific recommendations to ensure optimal mower performance.

Are replacement parts readily available for Bad Boy mowers?

Yes, replacement parts for Bad Boy mowers are readily available. I’ve found them at local dealers, online stores, and even the official Bad Boy Mowers website. It’s convenient to keep my mower running smoothly.

Can I use my Bad Boy mower on steep inclines or uneven terrain?

Yes, you can use your Bad Boy mower on steep inclines or uneven terrain. However, it’s important to take extra caution, as these conditions can be tricky and potentially hazardous for any mower. Safety is key.

How can I prevent rust and corrosion on my Bad Boy mower?

To prevent rust and corrosion on your mower, it’s essential to clean it regularly, especially after use. Applying a protective lubricant can help. Store it in a dry place to avoid moisture buildup.