Spreader - Duerkopp Adler 558 Service Instructions Manual

29. Spreader

42
1
2
3
4
5
6
7
8
Between the fork spreader 5 and the left hook there must be a
clearance appropriate to the thickness of the underthread used.
The right spreader 1 should move as close as possible without
touching on the top of the right hook.
Caution Risk of Injury !
Pull the mains plug before setting.
–
If necessary align the spreader slightly.
The spreaders must move easily in the hook support 4.
The spreaders, which are under spring pressure, are held in their end
position by the stops 2 and 6.
The fork of the left spreader should lie precisely over the thread hole of
the left hook and the tip of the right spreader centered over the tip of
the right hook.
The opening and closing of the spreaders occurs through the
alternating movement the spreader operating plate 3.
The movement of the left and the right spreader must be uniform. This
means that with a left-sided needle stitch the left spreader and with a
right-sided needle stitch the right spreader must touch the
corresponding spreader stop shortly before the lower dead center of
the needle bar.
–
Set the maximum buttonhole width.
–
Loosen screw 7 slightly.
–
Set the spreader operating plate 3 to the spreader drive spindle by
sliding the clamping piece 8.
ATTENTION !
By sewing devices (E nos.) with small buttonhole widths the closing
movement of the spreader ends a little later.