We may have found other answers which could help you.
Click here for Problem Thread Bobbin
Knitting machine Brother Kh910, card reading test 881 have error 3?
Brother XL4011?
old sewing machine pedal?
how do i unjam my sewing machine?
how to fix drive gear on a brother vx-1125 and get it timed again?
PE180D Brother Embroidery Machine?