Engine Type: Single-cylinder, 4-stroke, vertical air-cooled direct-injection diesel engine.Starting System: Standard models use a manual pull-recoil, but larger commercial models include a 12V electric key start with a mounted battery.Fuel Tank Capacity: Holds roughly 3.5 to 5.5 liters of diesel fuel.Fuel Consumption: Highly efficient, burning only 1.0 to 1.6 liters per hour under a full pumping load.