Bore70mmStroke56mmDisplacement430.8ccCompression RatioTheoretical 11∶1, Actual 6.5∶1Reduction Ratio2.55Power42HP at 6800 RPMStatic Thrust110kgMax RPM7000 RPMIdle RPM1000 RPMSpark Plug14mm DLE-8Spark Plug Gap0.6MMCarburetorDLE Self-primingFuelGasoline 93#, 97#Fuel Mixed Oil2T FD Grade, Fully SyntheticOil Mixing Ratio50 : 1Transmission OilGear Oil, 85W-140EP API-GL5 GL6 SAE 140 EPIgnition SystemDual DC Capacitor Discharge Ignition, 12V Power Supply, 5W/eachGenerator PowerPermanent Magnet Generator 14.5V, 90WStarter Motor Current35ARotation DirectionClockwise (Facing Propeller)CoolingFan CoolingWeightEngine: 27kg, Exhaust Pipe: 4.1kg, Total Weight: 32.25 kgRecommended Propeller1.5M Variable Pitch Carbon Fiber Propeller