22.3 Adjusting the cutting pressure / clamping pressure
Standard checking
The cutting pressure has to be set so that the looper thread is
precisely cut and clamped.
–
Loosen screw 7.
–
Remove throat plate 3 and aspiration 6.
–
Open the slide 2 of the throat plate manually so that the slide is in
the position according to fig. B.
–
Guide the thread 1 through the center of the needle hole.
–
Move the slide 2 manually to the position according to fig. A.
A slight pressure has to be felt when pushing.
The thread has to be cut totally.
The thread must be clamped after cutting.
Attention!
A too high cutting pressure results in increased knife wear
and intensely contracted stitches at the seam beginning.
–
Loosen screw 8.
–
Shift the spring sheet 9.
–
Tighten screw 8.
–
Reinsert throat plate 3 as well as aspiration 6 and tighten with
screw 7.
3
63
A
B
1
673
98
2
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