The Service Department will check the following:
Motor, foot control, electrical connections, belts, pulley, hand wheel, bobbin winder, tension unit, needle bar, presser foot bar, hook driver, feed dog, hook clearance, needle position, needle/hook timing. They will also inspect for worn and/or broken parts.
Adjustments will happen as needed on:
Bobbin case tension, top tension, straight stitch, zig zag, thread regulator, balance, and speed control.