Originally Posted by lauraspeer
Hi all,
This is my first post so I hope I put this thread in the right area, if not, admin please move it for me.
Well I have a portable Pfaff machine and it always works great except all of a sudden its doing this on the bottom of fabric (see photo). I didn't change any setting, just one day it worked and the next it didn't. I'm sure it's something easy, I just don't know how to fix it. I tried all I can think of and I'm having withdrawls not sewing lol!
Thanks in advance for your help!
Looks like a tension disc is not making contact with the thread, it would be the upper tension since all the loops are on the bottom. Try re threading the machine. On some of the newer machines, it is hard to tell if the thread is seated properly in the tension disc and through the check spring. This can also happen if your threading sequence is improper. Bobbins inserted with the thread leading off the wrong direction can also cause this, but from size of the loops I am pretty sure it is the upper tension disc.