Pfaff tipmatic 6150 Owner's Manual - Page 86

Sewing problems and their solutions Problem/cause: 1. The machine Skips stitches Needle is not properly inserted. Wrong needle is in use, 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 slubs in it, or has become dry after toolong storage. Thread is too thick. 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 push' ing the fabric The bobbin case is not properly inserted 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 NI. Insert new needle and push fully in. Insert new needle See needle chart Ipage 80. 81). Let the machine teed 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 adtusting. Thread is too thick, slubbed or hard. The bobbin thread is unevenly wound. Thread tangling at top or bottom side of fabric. 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 27 is at right. 6. The machine is running with difficulty There are thread remnants in the hook race. Check top and bottom tensions. Only use perfect threads Do not wind thread freehand, but run it on through the winding tension. Thread up correctly. Check needle and bobbin thread tensions. Remove needle plate, remove lint with brush. Push slide B (see page 27) to left. Remove the threads and apply a drop of oil to the hook. Important note: The rate main switch must be turned the threaded needle without off before sewing feet and needles fabric. When leaving the machine, are replaced Do not ope. even for short periods. switch off the main switch. This is Important if there are any children nearby. 86