Originally Posted by crashnquilt

If you need to adjust bobbin tension, there is a screw on the bobbin case to turn to tighten and loosen.

Hold the bobbin case with thread loaded in case in your hand. Pick up the free thread, the case should stand up in your hand, lift a bit and crawl down a bit. Like a spider on a web. If it flow freely, you need to tighten the screw on the bobbin case. You may have 2 screws on the bobbin case, you will want to turn the larger screw. Also, make sure your bobbin thread is indeed under the spring metal tensioner securely.

Unless you are using a slick thread like rayon or silk, I don't think you tension should be quite so high on the needle.

If you have just unpacked this machine, double check that you don't have any dust or lint lurking about.

If you have the machine on a frame, you may be moving the machine head too fast for the speed of the machine. Also, you may have the quilt too tight on the frame.

Hope this helps, and keep us posted on your progress.