MLD-28 Specification- Displacement: 1.7ci (28cc)- Configuration: 2C Single Cylinder Air Cooled- Carburetor: Walbro Pump- Ignition: CDI Electronic Ignition w/auto timing advance- Power Supply: 4.8~8.4V- 2.3lbs / 1.04kg / 36oz including ignition and muffler- Maxi. output: 2.8BHP- Maxi. RPM 9000- Idle RPM 1500 - Fuel: Unleaded Gasoline- Oil: 2 cycle high performace (synthetic is recommended)- MIX: 1:30 to 1:45- Prop selection: 17x8 ~ 18x10"