User manual PFAFF 90

[. . . ] Follow these simple instructions and familiarize yourse lf with the exclusive features of your machine. You will find sewing exciting on your easy-to-operate Pfaff 90. If you hove any sewing problems, please contac t your Pfaff dealer. He will be glad to help you at any time. [. . . ] Check and correct threading as instructed on pages 14 and 15. Use correct needle and thread (see chart on page 12). 2. Needle Thread Breaks Cause: The above mentioned may cause thread breakage. Hook raceway is jammed with thread or needs Oiling. Burrs or sharp edges on needle plate slot. Polish needle plate slot with fine emery cloth. [ 25 L 3. Needle Breaks Cause: Bent needle strikes point of sewing hook. Fabric pulls needle so it bends and strikes needle plate. Faulty Stitch Formalion Cause: Improper tension. Pieces of thread between tension discs. 5. Machine Feeds lmpropery Remedy: Replace needle at once to prevent further damage. second seam is placed close to the edge but nat beyond permit zigzag The felling foot has a needle slot, rather than a needle hale, to felling. 29 GR049 847 551 Hemming Machine Setting: A—O or 2 to 3 The hemmer foot is indispensabte if you wont to sew a uniform hem. You can hem with straight or zigzag stitches, depending on the type of fabric you are using. Clip off the corn er of the fabric to facilitate insertion into the hemmer foot curl. Feed fabric so that the raw edge is in line with the left edge of the hem mer foot. If you feed less, the fabric will not be folded twice and the raw edge will show. II GR 004 . 4 Avoid ugly ends by slowing down feeding. To do this, press the fabric against the needle plate on the left side of the foot before you come to the end of the hem. GROO5 30 838 954 Overcasting Edges Machine Setting: A—2 to 4 B—. 4 Overcasting prevents froyed edqes. Use a long wide zigzag stitch and sew edge with the needle taking one stitch into the fabric and the other over its edge (normal tension setting). You may overcast edges after fabric is cut and before the pieces are joined. GR 037 838 954 Butt Seaming r Machine Setting: A 3 or 4 B Two similar pieces of fabric which do not ravel easily may be butted to gether and joined with zigzag stitches. Place the selvaged edges of the remai ning pieces of sheet under the sewing foot so that the abutted edges ore centered under the needle. Join them with close, wide zigzag stitches to obtain a neat and flat seam. Hem raw edges of sheet. -— — . N 31 GR 045 L : GR 055 R 7157 Large holes con be patched quickly. [. . . ] d, wider cording with sewing silk in the needle Set the machine for a medium stitc h length (about 4). Upper Threading Place a spool of thread on each of as illustrated on page 15. Pass both thread ends through both thread retainer thread between the rear and center openings 2, center and front tension discs of uppe r tension 3. Raise take-up lever 4 to tension discs, and the other between the through the hole at its end. [. . . ]