1.The red lead is connected to the positive and the black lead is connected to the negative. Seen from the brake installation end, the drive wheel turns clockwise. When the lead position is reversed, the drive wheel turns in the opposite direction;
2.The whole machine should be able to run smoothly, the sound is harmonious, and there is no noise;
3.Fasteners are firmly connected and tightened in place, no slippage, and threaded glue should be applied.
