Pfaff 1571 Instruction Manual page 117

2
Remove felt 1 and replace it with the new felt.
Loosen screw 2 and pull out thread tension device 3 to the right.
Install the weaker spring and replace the parts in the reverse order.
Install new bobbin case 4 with reversing cam.
5
1
4
3
Loosen screw 5 (see arrow) and remove
the needle holder.
Install the new needle holder and tighten
screws 5 a little. Insert the needles.
Adjust the hook-to-needle clearance (see
Chapter Needle bar rise, Hook-to-
needle clearance and Needle guard)
and tighten screw 5.
Conversion
3