Operation Manual

6.5 Adjusting the looper thread feeder (Cl. 175/176)

The looper thread feeder 1 guarantees the automatic adaptation of the

looper thread quantity to the set stitch length.

This means an optimum stitch formation for every stitch length, even

in case of condensed stitches. No gaping and ruffling of the seam.

The looper thread quantity to be pulled can be quickly adjusted.

Without changing the thread tensions you can realize:

a) tight

b) normal

c) highly elastic (balloon stitch)

seams

After loosening the screws 2 and adjusting the feeder 1 please make

the following settings:

–

Loosen screws 2.

–

Adjust the thread feeder:

towards 0 = tighter seam

towards 5 = more elastic seam

Important hints!

1) In case of an extreme adjustment, e.g. a very short s titch length and

a very large thread quantity (elastic seam) it has to be observed that a

safe needle penetration into the thread triangle is still possible. A too

large looper thread quantity may lead to skipped stitches.

2) If the stitch length is increased considerably with the settings

described under 1), e.g. to 4 mm, the t hread guide has to be reset

towards 0. Otherwise the looper thread might jump off the thread

pick-up disc. The looper thread would not be pulled back by the

thread pick-up disc as it is necessary during the retrograde motion of

the looper.