When threading the top thread, thread machine with the presser foot lifted, keep the thread taut while threading, make sure thread goes through take-up arm and between tension discs - After lowering the presser foot and before threading the needle pull down on the thread just above the needle and it should be taut, if not re-thread. Other Answers in the Category "Sewing Machine Troubleshooting Guide"16. Fabric puckers
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