Loose Stitching on top of quilt

If while stitching, and there are loose stitches on the top of your quilt, here are some things to check.

1. Check that your bobbin tension is not too loose.

2. Make sure bobbin case brake spring (backlash spring) is properly adjusted. With the bobbin case on the palm of your hand, latch & opening up, one side of the bobbin should be slightly higher than top edge of the bobbin case and if you lightly press down on the bobbin, it descends slightly into the case. To adjust the backlash spring, place the bobbin in the case and hold it with the bobbin facing up.  Using a tiny screw driver turn the screw counterclockwise to raise the backlash spring (and raise the bobbin) or turn it clockwise to lower the backlash spring (and lower the bobbin). After making an adjustment, reinsert the bobbin into the machine, bring up the bobbin thread, and test stitching. Make additional adjustments if necessary.