Pfaff 6250 Owner's Manual - Page 118

Sewing faults and their removal Fault/cause: 1. The machine skips stitches Needle is not properly inserted. Wrong is bent or blunt. Machine is not properly threail4 S Needle is too small for threait 2. Needle thread breaks See reasui is ,ibt iv Thread teiisittii it lsjl 1. Thread i; ptilti ii li,c UnIts in tier has bt'ctiiie tlpy iI5'i liii) Ittii(J storage. Tlin,itl 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 4. Seam is sewn unevenly The teie,ioi i i ei'tls eljistiiig. Thied is too thick, slubbecl or hard. The bobbin thread is unevenly wound. Thread bunching at top or bottom side of fabric. S Remedy: I ltitlt utIle hilly titiwirds, flat side facing the luii.k. I Its' nettle systeni 1 30/705 H. Ii ist ri a new needle. I Use a larger needle. I See 1. S Adjust thread tension. Only use good threads. S Use needle with large eye (System 1 30 N). I I Insert new needle and push fully in. Insert new needle. S See i eecl le chart (pi gi 1 06). Let the machine feet the fabric. Only guide the fabric I I lightly. VV[ieii you insert the bobbin case, push it fully in tolie stop. I Check top arid bottom tensions. I Only use perfect threads. Do not wind thread tree-bred, but run it on through I the winding tension. Thrercl up correctly Check needle- and bobbin I thread tensions. S 5. Machine does not feed or feeds irregularly Sewing lii it ls collected between the feed dog teeth rows Feed dog is lowered, slide B (see page 29 is at right). Remove needle plate, remove lint with brush. Push slide B(see page 29) to left I & S I S I I I I I I