Operation Manual

3. Operation
3.1 Needles, Threads and Thread Tension
Needles of the systems 134, 797 or Sy 1955-01 are to be
used.
When inserting the needle care is to be taken that it is
pushed in until contact is made and that the furrow of the
needle is turned to the right, e.g. to the hook tip.
The following table shows for each needle thickness the
recommended thread thickness, thread tension and t
thread regulator setting.
Needle
Thickness
Thread
Needle
Thread
Tension1)
Looper Thread
Tension. 1)
Cl.271/273 Cl.272/274
Thread Regulator 1)
Sm. Hook Extra-large Hook
70
Poly-Poly
Nm 95/2
60-100 20-30 25-35 4 2.5
80
Poly-CO
Nm 80/2
60-100 20-30 25-35 3.5 2
90
Poly-Poly
Nm 80/2
60-100 20-30 25-35 3.5 2
100
Poly-Poly
Nm 65/2
CO Ne 50/2
70-100
60-100
20-30 25-40 3 2
110
Poly-CO
Nm 50/2
100-150 25-35 30-45 3 2
120
Poly-Poly
Nm 30/3
Poly-CO
Nm 25/2
200-300 30-40 40-70 2.5 1.5
1) Transport length 2.5 mm and number of stitches 5000/min f. sub-cl. -140041,-140042,-640041,-640142
and-740142
1) Transport length 4 mm and number of stitches 4000/min f. sub-cl. -160062
3.2 Spooling of the Bobbin Thread
Spooling occurs automatically with pressed on bobbin
winder flap 1 during sewing.
See the following illustration for threading the bobbin
thread from the thread stand to the bobbin winder.
Remove the thread rests to be found on the bobbin hub
before spooling.
Pre-wind the bobbin thread to the right around the bobbin
hub.
Cut off the thread end in the cutting clamp 2.
The filled bobbin is removed in the same way.
1
2
14