Operating Latch - Duerkopp Adler 558 Service Instructions Manual

36.4 Operating Latch

7 8 9
56
1
2
3
4
5
6
At the last stitch of the buttonhole seam the handwheel locks.
In this position there must be a feelable clearance X between latch 6
and the operating piece 1.
By slow continued turning of the hand crank the operating piece 1 with
the operating edge 3 wanders onto the latch tip 5.
In this position the edge of the upper thread knife is 1 mm from the
edge of the needle plate 4.
Too great a swing of the upper thread knife can lead to damage of the
underthread guided in the left hook.
–
Bring the machine into the end position by turning the hand crank.
–
Turn on the machine and turn off just before the last stitches of the
buttonhole seam.
Caution Risk of Injury !
Pull the mains plug before adjusting.
–
Turn the handwheel until it catches.
The needle is in its highest position.
–
Tilt the machine head up.
–
Loosen screw 8.
–
Loosen the lock nut and turn in setting screw 7 at first only so far
that its face is flush with lever 9.
Setting screw 7 may thus not yet exit on the other side of lever 9.
Continued on the next page !