Mechanical Upper Thread Catcher By Sub-Classes - 211000 And - 241000 - Duerkopp Adler 558 Service Instructions Manual

41. Mechanical Upper Thread Catcher by Sub-classes - 211000 and - 241000

64
1
2
3
4
5
6
The upper thread catcher 4 lowers and rises with the movement of the
cutter bar 3.
During lowering the hook 6 must move about 3 mm forward beyond the
upper thread. Only thus is assured that the upper thread jumps
securely behind hook 6.
The felt 5 holds the upper thread end until the next seam beginning.
–
Conduct the setting with threaded thread and with material in place.
–
Turn on the machine with the hand lever.
–
Just before the seam end of the left buttonhole seam turn the
machine off with the hand lever or pedal.
Caution Risk of Injury !
Pull the mains plug before adjusting.
–
Manually turn the handwheel farther until it catches (turn-off
position).
–
Turn the hand crank until the cutter bar 3 reaches its lowest
position.
–
Loosen screws 2.
–
Turn plate 1 so that the hook 6 lies about 3 mm forward beyond the
upper thread.
–
Tighten screws 1 again.