Pfaff Tipmatic 1027 Owner's Manual - Page 14

Upper tension (41) A = 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 B = Regulating screw. Turn it leftfora loosertension, or right for a tighter tension. C = Both tensions are correct D = Upper tension too loose or lower tension too tight. E 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 gradu ally move downwards when you jerk your hand upwards lightly. 4 4- E I 10