The John Deere Z915B is a zero-turn mower from the Z900 Series produced from 2013 to 2016. It features a 25 hp Kohler CV742 747cc 2-cylinder air-cooled gasoline engine, hydrostatic Tuff Torq transmission with infinite forward and reverse speeds, and two-wheel drive with power steering. The mower includes wet disc brakes and a two-post folding ROPS for safety. It has a fuel tank capacity of 11.5 gallons (43.5 L) and weighs 1178 lbs (534 kg). The mower rides on 13x5-6 front tires and 24x9.5-12 rear tires, with an optional 24x12-12 rear tire size. The Z915B supports mid PTO with an electro-magnetic clutch. Available attachments include 48", 54", and 60" mid-mount mower decks with right-discharge and adjustable cut heights from 1.0 to 5.5 inches.