So I have a Brother sewing machine very similar to this one. This is the first time for me sewing knits and using a zigzag stitch and I can't seem to get the tension right.
I've re-threaded both the top thread and the bobbin, adjusted the upper thread tension from 4.5 to 0 back to 6 and I keep getting the same results. The bobbin thread is poking up from underneath and the top thread then dosesn't zigzag but is straight, with the bobbin creating little half-rungs (is this clear?). I've looked in my manual to see if I can adjust the presser foot pressure but I can't (someone from work said when sewing knits you should have a very light presser foot pressure).
Any thoughts on whatelse might be the matter?