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
