The sewing machine has not been properly connected, or the mains socket is without current........6
Lint is in the shuttle ............................................................................................................................45
The balance wheel has been pulled to the side for winding the bobbin............................................14
Gathering or puckering of the seam
The thread keeps forming loops
The upper thread tension is too tight..................................................................................................20
The machine has not been properly threaded ....................................................................................16
The presser foot pressure is too high (when sewing fine fabrics, place a sheet of paper under them) .
......11
The needle is too thick for the fabric...................................................................................................24
The thread tension has not been regulated ............................................................................19, 20, 21
The upper thread has not been properly threaded and/or the under thread has not been properly wound
.16, 14
The thread strength is not suitable for the fabric................................................................................24
The fabric is fed unevenly
The machine does not work
The stitch length is set to "O".............................................................................................................22
Lint has settled in the throat plate so that the feed dog can no longer come out sufficiently............46
51
