3
Conversion
● 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.
● 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.
5
1
3
2
4
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