When choosing between the Hydro-Gear ZT 2800, ZT 3100, and ZT 3400 hydrostatic transaxles for a zero-turn mower, it’s essential to consider the mower’s intended use and your performance needs. Here’s how they compare:

  1. ZT 2800: This is a robust residential-grade transaxle, found in models like the Toro TimeCutter series. It features a 10cc pump and a 16cc motor, providing good power for regular yard work on properties with light slopes and minimal heavy-duty tasks. It’s ideal for homeowners mowing 1-2 acres. However, for more intensive use or larger loads, it may feel underpowered​.
  2. ZT 3100: The ZT 3100, used in Toro Titan mowers, is an entry-level commercial-grade transaxle. It has a slightly larger displacement and more durable components compared to the ZT 2800, with features like cut gears for enhanced longevity. This makes it suitable for more demanding tasks, such as mowing 3-6 acres, or for semi-professional landscapers who need greater durability and smoother operation. The ZT 3100 also handles higher vehicle weights, around 1200 pounds, and is better suited for towing attachment.
  3. ZT 3400: Found in commercial mowers like the Toro Z Master, the ZT 3400 is a full commercial-grade transaxle. It offers even larger displacement, stronger axle shafts, and can handle the rigors of professional use. It’s designed for heavy mowing on properties larger than 6 acres, delivering increased power and torque for faster operation and better performance under continuous use. This model is also equipped with better cooling systems to endure long hours of mowing​.

In summary, if you’re choosing a Toro zero-turn mower, go for the ZT 2800 in the TimeCutter series for residential tasks, the ZT 3100 in the Titan series for semi-commercial or heavier residential use, and the ZT 3400 in the Z Master for full commercial performance and durability.