Pfaff creative 7550 Owner's Manual - Page 162

Sewing faults and their removal Fault/cause: 1. The machine skips stitches Needle is not properly inserted. A wrong needle has been inserted. Needle is bent or blunt. Machine is not properly threaded. Needle is too small for thread. Remedy: Push needle fully upwards, flat side facing back. Use needle system 130/705 H. Insert a new needle. Check the threading paths. Use a larger needle. ! 2. Needle thread breaks See reasons above. ri - Thread tension is too tight. Thread is poor or has slubs in it, or has become dry after too-long storage. Thread is too thick. See 1. 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 it fully in. Insert new needle. See needle chart (pages 157/158). Let the machine feed the fabric. Only guide the fabric lightly. When you insert the bobbin case, push it fully in. ! I i i i Ij i [ 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 feed dog teeth rows. Feed dog is lowered, slide B (see page 33) is at right. Remove needle plate, remove lint with brush. Push slide B (see pagge 33) to the left. 6. Machine binds Loose threads in the hook race. Remove loose thread and apply one drop of oil to the hook. 7. Machine does not sew the entered program Switch off the machine and back on again after about 10 seconds. Enter the desired program again. Fi Important notes: Before you change 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 if children are nearby. 163 C U)- cO I.. 04--C' - :.