How to maintain presser foot electromagnet

1. You can check the position of the loose mandrel pin on the loose mandrel. When the sewing machine is in the highest speed sewing state, the end face of the thread loosening ejector falls on the plane of the thread loosening ejector, and the thread gripper works. In the low-speed sewing state, the needle end face of the loose thread ejector pin still falls on the plane of the loose thread ejector pin, but it is closer to the inclined plane of the loose thread ejector pin. When the thread trimming stops, the end face of the thread loosening ejector pin falls on the plane of the thread loosening ejector pin, and the clamp floats and does not work.

2. After the first two inspections are in place, if the problem cannot be solved, it is likely that the pin of the loose thread ejector pin is short. You can remove the original thread loosening ejector pin of the sewing machine, make an extended thread loosening ejector pin yourself, and then reinstall it.