I utilize a Kubota ZD-321 zero turn mower with some hillsides in the yard. Given its low center of gravity, I assume the mower would slide sideways, or turn downhill long before it rolls over sideways, while mowing across the hillside. Am I correct concerning stability and traction?
The agility and fast operation of zero turn mowers mechanized its adoption amongst home and lawn care operators alike. However, the design and working model of the mower raises a vital question: Can the zero-turn mower flip over? In short, yes, but understanding the why and how to prevent it can be vital for operating these machines effectively. In this post, we will review the major factors that make zero-turns tip, the associated risks, and safety measures to take.
Reasons Why Zero-Turn Mowers Are More Prone To Flipping
The pivoting system of zero turn mowers allows them to be maneuvered in tight corners effortlessly. These mowers are also able to spin on their vertical axis because of rear wheel steering and are remarkably easy to handle. However, these mowers do trade some stability for maneuverability. Here is a summary of how a zero turn mower is able to flip over so easily:
High Center of Gravity
The engine and the operators seat on zero turn mowers are much higher compared to other mowers. This difference enhances their susceptibility to tipping over, especially if the ground is sloped or uneven.
Rear Wheel Steering
Zero-turn mowers make use of levers or joysticks, with each one controlling a rear independent wheel. This eliminates the need for a steering wheel. While it does make for easier tighter turns, if it is not operated with care, can lead to instability.
Lightweight Construction
To increase efficiency and speed, most zero turn mowers are constructed to be as light as possible. Less weight does cause less stability when compared to traditional heavier mowers.
Frequent Situations That Can Lead to a Zero-Turn Mower Flipping Over
Working on Steep Hills
Operating a zero-turn mower on steep hills is not recommended. When mowing side to side (instead of up or down), the mower may lose its balance and tip over. Even moderately steep slopes can result in flipping from abrupt changes in speed or sharp turns.
Excessive Speed Over Sharp Turns
The flexibility to make sharp turns is usually one of the best features of zero-turn mowers. However, doing these turns to quickly, particularly on rough ground, can make the mower flip or tilt.
Uneven Shaped Surfaces
Uneven or bumpy surfaces can cause a zero turn mower to suddenly tip or fall over while it’s in motion. If one wheel is in a hole while the other is on flat ground, the sudden movement can cause the mower to tilt.
Miscalculation or General Overloading
Using a zero-turn mower for inappropriate tasks such as improperly towing heavy weights or suspending additional weight will likely increase the chance of tipping over the mower. This is likely to happen due to the change in center of gravity.
How to Avoid Tipping Over with a Zero Turn Mower
Even though zero-turn mowers are more prone to rolling over than traditional mowers, these tips may help reduce the risk:
Avoid Steeper Inclines
For properties with hilly terrain, it may be easier to use a standard riding mower or a slope mower. If you have to zero turn mowers on a slope, always make passes up and down the slope, never sideways.
Reduce Speed While Sharper Turns
When making tighter turns, especially on uneven surfaces, decrease your speed. This will help with stability and reduce the chances of tipping.
Pick The Right Mower Fit For Your Lawn
Consider a zero-turn mower with a wider wheel base and a lower turning radius if your yard is rough and requires more maneuverability. Some mowers are better suited for more challenging terrains.
Do Not Forget About General Upkeep
Always check the tire pressure and steering hardware check is operational. Try to prevent mechanical failure because of poor wheel and steering component condition.
Read and Proceed with Caution on Wet or Slippery Surfaces
Wet mowing conditions, for example, mowing on wet grass, mud, or loose soil can cause the mower to slide or tip. In these cases, avoid mowing when possible.
Follow the Manufacturer’s Direction
Always, read and follow the manufacturer’s weight limits, slope ratings, and safe operating instructions to the latter.
Safety Features to look For
Preventive safety measures for tip-overs and operator protection are found in most zero turn mowers. These include,
ROPS (Roll Over Protection Systems): A roll bar or frame intended to protect the operator in an event of a tip-over.
Seatbelts: With ROPS, always wear a seatbelt while operating a zero turn mower to keep you in place during a tip.
Wide Wheelbase Models: Reduced stability in uneven terrains is addressed through enlarged wheelbase of some zero turn mowers.
Are Zero Turn Mowers Safe to Homeowners?
Not entirely self propelled, zero turn mowers are not entirely safe, due to their ability to flip, therefore if operated properly, they can vacation wound free. With these types of accidents, it is operator error or misuse of the mower compared to designer error. Through practice and proper guideline training, even novice users can easily operate zero turn mowers without worry.
Conclusion
It is certainly true that zero-turn mowers have the capability to tip over given a certain condition, but the risk of that can be mitigated by employing the corresponding precautionary measures. Slowing down when turning, avoiding steep slopes, and using a cutter suitable for your terrain will enable you to reap the benefits of a zero-turn mower without compromising safety.
If there is uncertainty on whether or not a zero-turn mower would work best for your yard, talk to a local dealer or landscaping expert. They would provide tailored advice depending on your requirements and set-up.
