[. . . ] With the advantages on the weight, power and stability, DLE provides you an opportunity on the power selection of TOC airplane. [. . . ] 1Choke Arm (The Choke Arm is used under the circumstance of cold start-up. Normally, the preset from factory is screw down the Needle and then turn back about 1. But we suggest it should be adjusted with the tachometer to obtain the maximum speed. With a proper gas maxing, maxing, spark plus will appear to be yellow at the ignition point. Step 1: Close the Choke and turn on the ignition power supply with full throttle. Step 2:, Spinning the propeller hardly with a Start-up Stick or hand until explosive sound is heard. [. . . ] 1 Take apart the screw, and open the rear cover of the carburetor. [. . . ]