How do I correct excessive thread breaks/frays on all needles?
There are many may causes of thread breaks and frays. The following is a list of possible causes and fixes: Poorly punched designs. To verify if the problem is being caused by an improperly punched design, sew with a known good design. Tensions not set correctly. Set machine to proper tensions (see setting Upper Thread Tension and Setting Bobbin Tension procedures). Machine not threaded correctly. Check threading with diagram in machine instruction manual. Garment hooped too tight or loose. Hoop garment correctly. Incorrect application of backing or use of no backing. Use recommended backing. Rotary hook needs to be lubricated. Oil rotary hook manually. Presser foot height not adjusted to correct height. Adjust to .5 mm. Presser foot bent causing it to rub against needles. If presser foot is slightly bent you can bend back to shape. If presser foot is severely bent it must be replaced. Presser foot scratched or scored on the bottom. Polish with crocus cloth of #52c crocus cord if scrat
