Pfaff 63 Owner's Manual - Page 24

Needle Breakage Cause: Needle bent and struck by the point of the hook. Needle too thin or thread too thick. Upper thread tension too tight, thus bending needle. Needle bent and strikes needle plate due to the material being pulled or pushed. Bobbin case inserted improperly. Uneven Stitches Remedy: Replace needle at once to prevent more damage. Cause: Tension regulated improperly. Study Needle and Thread Chart on page 11. [ither ease tension or use a thicker needle. Thread too heavy, knotty or stiff. Bobbin thread unevenly wound. Do not force the feeding movement, increase pressure on heavier material and thus ensure better feeding. Race too dry. When inserting the bobbin case push it Odd thread accumulated betv,een the up until it clicks with an audible sound. upper thread tension discs. 44 45 Remedy: Adjust tension in accordance with in structions contained in sections 13 anc 14. Use only first-class thread. For winding do not run the thread ove your finger but over the winder thrern tension. Apply one or two drops of oil. Loosen tension and remove thread.