Pfaff 230-260 Manual - Page 28

7eIutaaisj 'l/zea '72nuic,, Bobbin tension rarely needs adjusting, except for embroidery when it should be a little tighter than for ordinary sewing. Adjustment is nide by the small screw (x) n the bobbin case Turn it tell -(( tor looser tension. Turn it right )- for tighter tension. Determine correct bobbin tension by holding the thread end between thumb and forefinger and letting the bobbin case hang freely. The tension should be strong enough to keep the bobbin case from being pulled down by its own weight. However, as you jerk your hand slightly, the bobbin case should gradually slide down. V R 6946 R745 A The final stitch appearance can be regulated by upper tension knob (y) as follows: Turn left -46( for looser tension. Turn right )*- for lighter tension. The upper tension is so designed that alt grades of tension - loose to tight - can be covered with one complete turn of the tension knob. The numbers on the tension dial indicate different degrees of tension. The higher the number, the greater the tension. For ordinary sewing, the upper tension should be set between 3 and 5. 23 '1 J