The Hydro-Gear ZT-4400 drive system keeps your machine’s transaxles performing at optimum output levels with improved control while reducing vibration and noise. The bullnose AirFX™ deck delivers a better quality of cut – bar none. Using innovative air-gap baffles and vacuum seal technology, it creates superior airflow and lift on every blade of grass for an impressive quality of cut every time. With a large 15 gallon fuel capacity, the ZT6000 zero-turn mower lets you go from job to job without stopping to refuel.