KOHLER XT engines are four-cycle, single-cylinder, air-cooled, vertical shaft, gasoline, OHV, with cast iron liner. Kohler XT engines bring lawn care to a new level. Professional-grade features deliver tough performance and operator-centric design provides user-friendly maintenance. Innovative Smart-Choke™ technology provides easy, no-prime starts, eliminating engine flooding. Cast iron cylinder liner ensures long engine life. Large fuel inlet provides for easier filling and less spilling. Overhead valve design delivers efficient combustion and powerful performance. The engine is CARB and EPA emissions compliant and is backed by a two-year warranty.