Specifications3MODEL MCENGINEManufacturer/Model Kohler Command CH20, 2 Cyl., Gasoline (Air-Cooled)Displacement 38.1 cu. in. (624 cc)HP (@ 3600 RPM) 20.0Max. RPM (No Load) 3750Governed RPM 3600Max. Torque [ft-lb (N·m) @ RPM] 32 (43.4) @ 2500Idle RPM 1200 ± 75Spark Plug Type Champion ® RC12YCSpark Plug Gap .030 in. (0.76 mm)Crankcase Capacity 2.0 qts (1.9 liters)Crankcase Lubricant API SG, SH, SJ or higher Grade Oil Only with 10W-30 Viscosityabove 0° F (-18° C), or 5W-20 or 5W-30 Viscosity below 32° F (0° C)Oil Filter 28-050-01Fuel Tank Capacity 3 Gallons (11.4 liters)Fuel Regular Grade Unleaded Gasoline (87 Octane)Cooling System Capacity Air CooledELECTRICAL SYSTEMBattery 12 Volt, 35 AH, 275 CCACharging System Flywheel AlternatorCharging Output 15 Amp DC (Regulated)System Polarity Negative GroundIgnition Electronic Capacitive DischargeStarter 12 Volt Electric Ring-Gear Type, Solenoid ShiftInterlock Switch Ignition Lockout by Seat Switch, Transmission Neutral and BladeClutchCircuit Breaker Auto Reset (30A)TRANSMISSIONManufacturer/Model Dual Hydrostatic, Eaton Model 7, Each Wheel Independently DrivenSteering Hand Lever Control / Individual WheelForward Speed Control Precision Friction Lock Lever, Cruise Control, with Neutral-ParkPositionService Brake Dynamic Braking through Hydrostatic TransmissionParking Brake Mechanical Pin Lock in Transmission Gear