Over the years, the Bad Boy brand has built a reputation for manufacturing some of the most heavy-duty lawnmowers for landscaping.
Most common bad boy mower problems include; transaxle and hydraulic issues, deck lift failure, deck shaking, spindle, and alignment issues. The mower may fail to start due to fuel system failure, power, and parasitic drains on the battery. Trouble shoot these problems at home or seek technician assistance.
Below, we look at some common Bad Boy mower problems, how to troubleshoot them, and the recommended fixes and repairs.
Comment below (at the end of the article) asking about your specific problem and we’ll try to help you find a fix.
Can you troubleshoot a Bad Boy Lawnmower at home?
You can troubleshoot your mower at home if you have the technical skills and the required tools. However, I would recommend you call a certified mechanic to help with some problems such as a leaking hydraulic fluid, replacement of filters, blades, and even a whole transaxle.
For major problems, it is best to check your warranty and call it in so that a Bad Boy certified service technician can help you fix some of the problems at an expert level. It’s good to note some of these problems can be characterized by increased lawn mower noise or decibels.
7 Most Common Bad Boy Mower Problems
If you’ve used a BadBoy mower for a long time, you probably know that most common faults start with the mowing deck, starter, and transaxle. Most of these occur due to a lack of proper maintenance, wear, and tear, and sometimes the wrong usage.
Here are some of the most common mower issues and the best way to repair and fix them.
Electric deck lift problems
The electric deck lift of your bad boy mower can cause problems such as the actuator failing to lift or lower the deck. This could be due to shaft failure in screwing in and out, even if the actuator spins. To repair your actuator and solve your electric deck lift problems, you’ll want to unscrew open your actuator and check for the presence of moisture on the actuator housing. In case it’s damaged, you should get another actuator. You should also check to ensure that the housing is properly sealed.
If poor house sealing is the case, you can apply a sealant gasket to correct the problem. However, if the issue is the presence of rust on the screw shaft’s sleeve, clean it up, apply grease, and check again to see whether your deck now lifts and lowers properly.
Transaxle and hydraulic problems
Bad Boy mowers have a great suspension system that makes the ride smooth while keeping the mower deck stable even when mowing on uneven terrain. At the same time, you get an unmatched, smoother, and cleaner cut.
However, transaxle and hydraulic problems can rough your ride and produce bad cut quality on your grass. This can be bad for most sensitive turfgrasses that need a clean-cut quality and mowing height, e.g., Bermuda grass.
Common bad boy mower transaxle problems include:
- Leaking hydraulic fluid
- A damaged charge pump
The best fix for a leaking fluid is to get a new seal kit and install it. The hydro system may also be faulty so you might want to get a mechanic to inspect it and fix any faults there.
Mower pulling to one side; alignment problem
Another common problem you may encounter with your Bad Boy Mower is the alignment issue. The tractor pulls to one side as you mow your lawn and easily gets off the mowing track.
This is a steering problem whereby regardless of what direction you want the mower to go, it deviates off the mowing line and goes in the wrong direction.
While several different faults can cause the problem, the most common reasons you might want to check out include the following:
- Some tires have better grip than others.
- A faulty dampener (shock absorber) on one side.
- Handling and steering problems (poor adjustment)
This has happened a lot on the Bad Boy ZT with a 50’’ deck where the mower is, but the good news is that you can easily diagnose your zero-turn mower and even be able to fix the alignment problem in many cases.
How to fix a mower that’s pulling to one side:
If the problem is not a serious mechanical or transaxle fault, there are a few fixes that you can try to get rid of this problem. Here’s how to fix the issue:
- Balance wheel pressure accordingly
Your Bad Boy tractor will drag to one side- if the wheels on one side are underinflated. The easy solution is to check tire pressure to ensure all wheels have the recommended PSI. This should fix the problem.
2. Fix hydraulic problems
Hydraulic issues can vary and produce different faults and their signs. To fix this, you might want to check if there’s any oil leak around the transaxle parts. If there is, a new seal kit may be needed, but the best solution is to call a qualified mechanic.
Mower deck shaking
Bad Boy mowers are usually sealed decks, but after hundreds of hours of mowing, the blades will need some servicing and even the deck checked.
One common problem is cutting deck vibration or shaking, which can point to missing set screws from pulleys and lock collars. If the spindle key is also worn out, the deck will start to vibrate or shake when you start and run your Bad Boy mower.
This fix is as simple as tightening the belt adjustment at the back of the drive pulley. You can also check and replace any missing screws on the pulleys, the spindle, and the bearings.
If this does not fix the problem of a shaking mowing deck on your Bad Boy zero-turn mower, check to ensure the blades are balanced – especially if you installed new blades under the deck. If you are a DIY kind of person like me, it’s good to know if lawn mower blades are reverse threaded to avoid such a mistake.
If this issue persists, you might want to have the tractor checked by a certified maintenance mechanic for further troubleshooting and repair.
The mower won’t start or move
A lawn mower that won’t start points to a fuel pump or fuel system fault, which is common in most gas-powered self-propelled lawnmowers. If not the pump, the fuel injection line is likely the cause of the problem and is worth checking.
Even a new pump can be dry and cause the mower not to start or move when mowing the lawn.
Replace the fuel pump, or troubleshoot the fuel line to ensure fuel is running in the engine.
Another important fix is to check the spark plugs to see if they are properly mounted. If the plug is loose, the mower won’t start or can stop moving while in the middle of mowing. Ensure you check the battery metal terminals connection, and don’t forget the mower operates on battery. Connect the battery well and check the charge available. It may be the problem.
No power problems
Sometimes, your Bad Boy mower just won’t start. It could be that you’re hearing the relay when you turn the start key, but the motor just won’t turn over. If your mower won’t start, you should troubleshoot for the following:
- Battery problems– such as low charge or improper battery connection. Measure the charge and check if the metal terminals are loose.
- Fuel tank problems– such as use of old fuel (over a month old) or the presence of water in the fuel tank.
- Spark plug problems– such as unattached spark plug wire.
- Dirty air filter– a clogged air filter makes raw air into the engine hard.
- Faulty wiring and loose connections.
- Failure to observe the proper mower starting procedures. Ensure you service your bad boy lawn mower with a genuine bad boy mower service kit and oil.
Faulty spindles can result in uneven cuts on your turf as they’re a crucial component of the mower’s cutting deck. For owners of Bad Boy lawn mowers, some of the spindle issues that they’ve reported in the past include:
- Squealing noises- if your mower is making squealing sounds, it’s highly likely that the spindle is damaged or they have worn-out bearings.
- Low buzzing sounds- the bearings in your spindle may also cause low vibration noises if they’re worn out.
- No immediate heat-up- if your spindle only heats up after about half-an-hour of use, you could be dealing with a spindle preload issue.
- Visible damage- if your spindle is visibly bent or damaged, resulting in uneven blade spinning, you’ll need to replace it.
To fix the damaged spindle on your mower’s cutting deck, you’ll need to remove and repair the existing spindle and reinstall it. Alternatively, you can purchase an entirely new spindle and install it. Finally, if worn-out spindle bearings are the issue, you should consider replacing them too.
Read More: Lawnmower sputtering causes and fixes
What is the warranty on Bad Boy mowers?
The Bad Boy brand provides comprehensive warranty cover for all its commercial lawn mower products. This includes the free repair and replacement of defective mower parts for up to two years from the time of purchase. Defects can either be classified as material defects or workmanship defects.