Pfaff 1214 Owner's Manual - Page 21

Perfect seams through properly balanced tensions V Both ten&ons btanced The thread tensions are set at our factory, using the most popular threads. Even so, your seam may not look as the one shown in Fig. 1. In this case, check to see whether the upper or lower tension needs adjusting. Then regulate the tensions as fol lows; The lower tension is regulated by turning the small knurled screw on the bobbin case. Turn this screw to the right (with your thumb rather than your finger nail) for a tighter tension, or to the left for a looser tension. Right (R) and left (L) are indicated by arrows. If you can pull the thread from the bobbin easily against little resistance, the bobbin thread tension is just right. The upper tension is located under the top cover of your machine', as was already explained on page 10. 'The tension dial is provided with numbers 0 to 10. The higher the number, the tighter the tension. The nor mal tension setting is between 3 and 5. Always use the same size thread on the bobbin and in the needle. '11