Duerkopp Adler 558 Service Instructions Manual page 39

1
2
3
4
5
6
7
–
For precise setting first loosen the screw 2 accessable behind the
hook block.
Screw 2 is accessable through hole 1 in the base position of the
hook block.
–
By adjusting the clamping piece 3 set the hook support so that the
right and left hook tip have the same clearance to the needle.
–
Tighten screw 2 again.
–
Loosen the mounting screws 6 and 7 and securing screws 4 and 5
on the sprocket.
–
Set the hook tips to the needle center by turning the setting screws
8 and 9 (see illus. a ):
Hook tips lie in front of the needle center
Screw out the upper setting screw 8
Screw in the lower setting screw 9.
Hook tips lie beyond the needle center
Screw in the upper setting screw 8
Screw out the lower setting screw 9.
–
After a correct setting first tighten the mounting screws 6 and 7
again.
–
Tighten the securing screws 4 and 5 again.
8
4
5
9
a
39