Sewing machine bottom thread throwing maintenance methods: 1. To adjust the position, first, the tip of the shuttle needs to be close to the needle, but it cannot touch the needle, and then it must be aligned with the middle of the groove; 2. Adjust the screw, sometimes it is Because there are two screws on the shuttle needle, but they are loose, so you need to tighten the screws a little bit. When tightening, you can rotate in a clockwise direction.
1. Adjust the position
First of all, it is necessary to adjust the needle tip of the shuttle needle. Make sure that the needle tip of the shuttle needle is close to the needle, but cannot touch the needle, and the middle position of the groove shall prevail.
2. Adjusting screws
Then you need to adjust the screw, because there are two small screws on the shuttle needle, which can be used to adjust the lower thread. You can check whether there is a loose problem, and then use a wrench to tighten the two small screws in a clockwise direction, so as to avoid the problem of falling off and to avoid throwing.
