Jump stitch

1. The needle tip of the needle is not sharp and curved and hairy. Change needle
2. The gap between the needle and the hook tip is too large. Re-adjust the relative position of the hook
3. The hook tip becomes dull or slightly defective. Grind the shuttle tip and polish
4. The embroidered stretch is too loose. Tighten embroidered fabric
5, the embroidery presser foot spring pressure is not enough or damaged. Change the embroidery presser foot spring
6. The thickness of the embroidery thread does not match the needle. The thickness of the needle is selected according to the thickness of the embroidery thread.

Broken needle
1. Needle bending, needle tip hair, needle screw loosening, changing needle, tightening screw
2. The hook and the needle are not properly matched. Adjust the position of the hook.
3. The hook and the needle are too tight. Adjust the position of the hook and the needle.
4. The gear gap in the rotary box is too large. Re-adjust the gear gap.
5, the machine needle out of the surface signal is not allowed to adjust the needle out of the high and low position encoder position
6. The needle of the machine head is not synchronized. Adjust the needle of the machine head and enter and exit the cloth at the same time.