1. On the premise of correctly installing the machine needle, the machine needle moves from top to bottom and the shuttle rotates. When the machine needle is lowered to a low position, the shuttle tip nozzle of the spindle should be in the range of 14 18 and 10 12 mm from the center of the machine needle. That is to say, when the needle rod goes down to a very low level, the distance between the needle tip and the needle tip is 3.5-4MM, and the needle rod rises 2.2MM, the needle tip reaches the center of the needle, and the distance between the needle tip and the needle hole is 1.2-1.5MM.
2. When the machine needs the thinner sewing material of the quilting machine, the center distance between the tip of the shuttle and the needle should be adjusted to 8-12 mm. As long as the three fastening screws on the shuttle are loosened and the shuttle is turned clockwise at an angle, the positioning distance will increase; on the contrary, it will decrease.
3. The matching of needle and spindle is determined by the actual need of the machine itself. Because of the different combination forms of stitches, the adjustment of the position of the needle rod is based on the pinhole and the needle tip.