Features:1.Open the bottom plate to check the wiring of the engine , connect thefuel tank pipeline , and close the bottom plate after installing three No.5 batteries.2.Use gasoline ( 95 # ) to fill the fuel tank . When the filling is completedmake sure that there is no air in the fuel pipe.3.On the right side of the engine ( where the fly hammer is installed ) ,slowly turn the wheel counterclockwise for more than one circle , itsfunction can make the mixed gasoline fully enter the cylinder.4.Turn on the power switch and quickly turn the flywheel clockwise tostart the engine on the right side of the engine ( flywheel position ). Precautions: Note:1. Please understand the product might have some colour difference due to different monitors and scenes.2. Please allow slight deviation for the measurement data.