The Toro® Groundsmaster® 5900-D and 5910-D rotary mowers offer an impressive 16' (4.88 meter) cutting width for making quick work of even the largest jobs. Equipped with a 72 hp (53.7 kW), diesel engine, the 5900-D and 5910-D are powerful and efficient. The onboard InfoCenter™ provides on-board diagnostics to identify potential maintenance issues. These features, along with the SmartCool™ system with an auto-reversing cooling fan, ensure a long, productive life. Users can choose the open-air 5900-D model, or the climate-controlled, safety cab 5910-D model.