Specifications3MODEL B18ENGINEManufacturer/Model Briggs & Stratton Vanguard, 2 Cyl. OHV (Air-Cooled)Displacement cu. in. (cc) 34.8 (570)Max. Power HP (kW) 18 (13.4) @ 3600 RPMGoverned RPM 3600Max. Torque lb·ft (N·m) 29.5 (40.0)Idle RPM 1750Spark Plug Type Champion ® RC14YCSpark Plug Gap in. (mm) .030 (0.75)Crankcase Capacity qt (L) 1.5 (1.4)Crankcase Lubricant API SJ or Higher Grade Oil Only with 30W ViscosityAbove 40° F (4° C)Oil Filter 492932Fuel Tank Capacity gal (L) 4.0 (15.1)Fuel Automotive Grade Unleaded Gasoline(87 Octane Minimum, 10% Ethanol Maximum)Cooling System Air CooledAir Cleaner Remote mounted Cummins/Fleetguard OptiAir TM(Walker P/N 2090-1 Primary/2090-3 Safety Filter)ELECTRICAL SYSTEMBattery 12 Volt, 300 CCACharging System Flywheel AlternatorCharging Output 16 Amp DC (Regulated)System Polarity Negative GroundIgnition Magnetron ® ElectronicStarter 12 Volt Electric Key and Solenoid OperatedInterlock Switches Ignition Lockout by Seat Switch,Transmission Neutral and Blade ClutchCircuit Breaker Manual Reset (20A)TRANSMISSIONManufacturer/Model Dual, Independent Hydro-Gear ® ZT3100 Integrated TransaxlesSteering Hand Lever Control / Individual WheelForward Speed Control Precision Friction Lock Lever, Cruise Control, withNeutral-Park PositionService Brake Dynamic Braking through TransaxlesParking Brake Internal Mechanical Cog Lock for each Transaxle(Single Lever Control)