Pfaff tipmatic 6112 Owner's Manual - Page 91

Trouble-shooting Problem: 1. The machine skips stitches The needle is not properly inserted. The wrong needle is inserted. Needle is bent or blunt. Machine is not properly threaded. Needle is too small for thread. 2. Needle thread breaks See reasons above. Thread tension is too tight. Thread is poor or has slobs in it, or has become dry after too-long storage. Thread is too thick. Remedy: Push needle fully upwards, flat side facing the back. Use needle system 130/705 H. Insert a new needle. Check how machine is threaded. Use a larger needle. See above. Adjust thread tension. Only use good threads. Use needle with large eye (System 130 N). 3. Needle breaks off Needle is not pushed fully in. Needle is bent. Needle is too thick or too thin. Needle is bent, and has hit the needle plate because you are pulling or pushing the fabric. The bobbin case is not properly inserted. Insert new needle and push fully in. Insert new needle. See needle chart (pages 82 and 83). Let the machine feed the fabric. Only guide the fabric lightly. When you insert the bobbin case, push it fully into the stop. 4. Seam is sewn unevenly The tension needs adjusting. Thread is too thick, slubbed or hard. The bobbin thread is unevenly wound. Thread bunching at top or bottom side of fabric. Check top and bottom tensions. Only use perfect threads. Do not wind thread free-hand, but run it on through the winding tension. Thread up correctly. Check needle and bobbin thread tensions. 5. Machine does not feed or feeds irregularly Sewing lint has collected between the teed dog teeth rows. Feed dog is lowered, slide B (see page 27) at right. Remove needle plate, remove lint with brush. Push slide B (see page 27) to left. 6. Machine is running with difficulty There are thread remnants in the hook race. Remove the threads and apply one drop of oil to the hook. Important note: Before you replace sewing feet or needles, you must switch off the main switch. Do not start the threaded machine without fabric in it. If you leave the machine, even for a short time, do not forget to switch off the main switch. This is important it children are nearby. 88