Specifications5MODEL MBENGINEManufacturer/Model Briggs and Stratton Vanguard, 2 Cyl. OHV (Air-Cooled)Displacement 34.7 cu. in. (570 cc)HP (@ 3600 RPM) 18.0Max. RPM (No Load) 3600 ± 100Governed RPM 3600 ± 100Max. Torque [ft-lb (N⋅m) @ RPM] 29.5 (40.5) @ 2400Idle RPM 1750Spark Plug Type Champion RC14YCSpark Plug Gap .030 in. (.75 mm)Crankcase Capacity 1.5 qts (1.4 liters)Crankcase Lubricant SF/SG/SH/SJ or Higher Grade Oil Only with 30W ViscosityAbove 40° F (4° C)Fuel Tank Capacity 3 Gallons (11.35 liters)Fuel Automotive Grade Unleaded Gasoline (85 Octane)Cooling System Air CooledELECTRICAL SYSTEMBattery 12 Volt, 220 CCA (Interstate PC12/80)Charging System Flywheel AlternatorCharging Output 16 Amp DC (Regulated)System Polarity Negative GroundIgnition Magnetron® ElectronicStarter 12 Volt Electric Key and Solenoid OperatedInterlock Switch Ignition Lockout by Seat Switch, Transmission Neutral and Blade ClutchTRANSMISSIONManufacturer/Model Dual, Independent Hydro-Gear Integrated TransaxlesSteering Hand Lever Control / Individual WheelForward Speed Control Precision Friction Lock Lever, Cruise Control, with Neutral-ParkPositionService Brake Dynamic Braking through Hydrostatic TransmissionParking Brake Mechanical Cog Lock in Transmission GearNeutral Transmission Release by Manual Dump ValveFinal Drive Direct Drive Axle from Transaxle