Originally Posted by amma
Clean your bobbin area well, completely rethread your machine, check that your bobbin is in correctly, and if that doesn't do it, try changing your needle too :D:D:D
You might also check to make sure that your thread is coming off your spool the correct way and also that your bobbin is coming off the right direction. I have put a new bobbin in and realized later that I put it in the wrong way. Look at your manual if your not sure. Jan