A top-of-the-line Kubota tractor engine, providing long life and fuel economy, forms the core of the Model MD, a hard working, proven performer for commercial lawn mowers. Key Specs: 20.9-HP Kubota water-cooled, three-cylinder diesel engine Clam-shell style body and chassis to accommodate higher horsepower engine Electric radiator fan with reversible self-cleaning action Remote air intake for increased engine life Splined PTO drive shaft with Quick-Disconnect Coupler