While you wait for answers, we may have found some information which could help you.
Click here for Bobbin Case Machine
My new home memory craft 6000 will not draw the bobbin thread up?
Janome MC3000 noise?
how can i fix my memory craft 8000?
How do you adjust the tension for my xr65 sewing machine?
long arm quilting machine?
thread OK on top but not at bottom?