Pfaff synchromatic 1216 Owner's Manual - Page 29

Cause: Remedy: N 4. Seam is not uniform Tension out of adjustment. Thread too thick, knotty or hard, Bobbin thread wound unevenly. Kinks appear on top and bottom of material. Check upper and lower tensions. Use first-class thread only. During bobbin winding, do not hold thread in hand, but pass it through thread retainer stud. Thread machine properly and check both tensions. 5. Machines feeds irregulady or not at all Lint has accumulated between tooth Remove needle plate and clean out lint. rows of feed dog. Feed dog dropped. (Reverse-feed Flick reverse-feed control to the right. control is at left.) 6. Machine works heavily Thread ends in hook raceway. Remove thread ends and put a drop of oil into hook raceway. 7. Machine skips stitches in overlock seam Overlock-stitch attachment is loose. Secure attachment in position by tightening screw B securely (page 18> The seam does not look neat. Check thread tensions. 8. Fundamental rules Never run a threaded machine unless there is a piece of fabric under the sewing foot. if you have to leave the machine, even for a short while, be sure to switch off the master switch. This is particularly important when children are around. 25