The John Deere Z520A is a zero-turn mower from the Estate Z500 Series produced from 2008 to 2009. It features a 25 hp Kohler 724cc 2-cylinder gasoline engine, hydrostatic transmission by Parker Hannifin with infinite forward and reverse gears, and two-wheel drive with power steering. The mower has a wheelbase of 52.9 inches and weighs between 1099 to 1125 pounds depending on the mower deck size. It offers mid PTO with an independent electric clutch and comes with optional 54" or 60" mid-mount mower decks with manual or electric lift and right-discharge. The mower is built in Fuquay-Varina, North Carolina, USA.