Pfaff hobbymatic 801 Owner's Manual - Page 16

Upper tension (19) G = Setting mark. The normal tension setting is in the white range between 3 and 5. The higher the number, the tighter the tension. Lower tension H = Regulating screw. Turn it left for a looser tension, or right for a tighter tension. = Both tensions are correct. J = Upper tension too loose or lower tension too tight. K Lower tension too loose or upper tension too tight. The correct lower tension Let the bobbin case with a full bobbin hang down freely by the thread. It must not slide down by its own weight, but should gradually move downwards when you jerk your hand upwards lightly. J 4 I- 1 K 12