Yanmar® 3-cylinder, liquid cooled, diesel engine. 36.8 hp (27.5 kW), 74.4 ft. lbs. (105 Nm) torque, 1.64 liter displacement. Pressurized lubrication system with 5.0 quart (4.7 liter) capacity. Replaceable spin-on fuel filter/water separator. Heavy-duty three-stage, radial seal air cleaner with restriction indicator.