Pfaff Tipmatic 1035 Owner's Manual - Page 29

4 Cause: Remedy: 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 the bobbin tension stud. Thread machine properly and check both tensions. 5. Machine feeds irregularly or not at all Lint has accumulated between tooth rows of feed dog. Remove needle plate and clean out lint. Feed dog dropped. (Drop-feed control is at right.) Flick drop-feed control to the left. 6. Machine runs with difficulty Thread ends in hook raceway. Remove thread ends and put a drop of oil into hook raceway. 7. 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.