Knowledge

1. To adjust the position, first of all, the tip of the shuttle should be close to the needle, but it cannot touch the needle, and then it should be a

In general, wrinkling is easy to occur when sewing slippery fabrics. Due to the excessively small feed ratio, the bottom surface of the presser foot a

It is common that the needle is broken due to the incorrect position of the clamp foot and the machine needle is caused by the deviation of the button

Carefully check the positioning of the chain crochet needle; whether the position of the chain thread take-up lever is accurate, so that the thread of

First, check whether the needle and thread are selected correctly, whether the needle is installed correctly, whether the threading method and thread

1. Height positioning of the needle: When the needle rises to the highest point, the needle tip reaches the plane of the needle plate (2-thread, 3-thr

The height positioning of the needle bar is very important in debugging, and the general debugging work is based on it; whether the height is reasonab

According to the quality of the sewing material and the thread used, when adjusting the height of the needle bar, insert a screwdriver through the pan

The height positioning of the needle bar is very important in debugging, and the general debugging work is based on it; whether the height is reasonab

The standard height of the feed dog is 0.8mm from the plane of the needle board; Adjustment of the height of the feed dog: Loosen the tooth fixing scr

The standard height of the feed dog is 0.8mm from the plane of the needle board; the adjustment of the height of the feed dog: loosen the tooth fixing

First determine the height of the needle bar, turn the needle bar to the lowest point, insert the gauge between the needle plate and the lower end of