Home sewing machine can not lead the bottom line how to do
Broken needle, too far to jump needle, and then lock the two small screws.
Down to the lowest point, and then continue to shake up when the pinhole just under the tip of the 1.5MM position (that is, the thickness of a needle bar), pay attention to the tip just and the root of the root hair trace of the line on the line, too tight
May be the big arc (shuttle shuttle) card shift, the machine turned back, the pendulum will have two small screws screw loose, and then the left hand will shuttle the shuttle to the needle, right hand swing pulley will needle
If there is still a jumper or a bad condition, it may be a needle bar.
