Mark Pavcik, product manager for commercial mowing equipment at John Deere, provides a quick tour of the new ZTrak PRO 900 Series. Commercial, two-year bumper-to-bumper warranty with unlimited hours. 'Work it for a Week' promotion allows operators to evaluate mowers for themselves on their home turf. Seven models in the Z900 lineup feature the 7-Iron Pro deck with stamped, seven-gauge steel, full-wrap reinforcement and Mulch-on-Demand capabilities. Top mowing speeds of 10.5 or 12 mph. Ground-drive transmission featuring a piston motor, internal wet disc brakes and gear reduction final drive, providing more torque to the drive tires. Comfort & Convenience package with ergonomic control levers including built-in PTO shutoff and electronic deck raise and lower. Dial-in height of cut adjustment on the control panel, on-board self-diagnostics, run-flat tires and John Deere's exclusive Brake & Go system.