Adjust adjustment screw 2 of the amount of bobbin thread to be wound round the bobbin so that the bobbin is wound with thread about 80%.Turn the adjustment screw 2 clockwise to increase the bobbin thread amount or counterclockwise to decrease it.

• 用绕线量调节螺丝2进行调节，让线绕到80%25 。向右转动绕线量调节螺丝2绕线量变多，向左转动则变小。