Threading step

21/04/2021

According to the sequence of steps in the line, pay attention not to wear, wear the first three steps before the start, the bottom line, the surface of the wire and cloth are required to put.

CAUTION:
It's very IMPORTANT to thread in a correct way. If not, it will lead to
problems of thread seized up, thread in a group, bottom thread cannot
be drwan up, etc.