Needle Bar Linkage; Align The Needle Bar Linkage Laterally - Duerkopp Adler 669 Service Instructions Manual

2.5

Needle bar linkage

2.5.1

Align the needle bar linkage laterally

2 1
Caution: Risk of injury!
Turn off the main switch.
Check and set the needle bar linkage only with the sewing
machine switched off.
Standard checking
The needle must penetrate the center of the feed dog's stitch hole.
–
Insert a new needle.
–
Turn down the needle bar via the handwheel.
–
Check the lateral position of the needle in the stitch hole.
Correction
–
Loosen the screws on the adjustment rings 3 and 4.
–
Adjust the lateral position of the needle bar linkage in a way that
the needle stands in the center of the stitch hole.
–
Fix the adjustment rings 3 and 4 and tighten the screws.
–
Loosen screw 1.
–
Adjust the thread lever laterally in a way that the clearance of the
connection rod 2 on the cross head is identical to both sides.
–
Fasten screws 1.
Attention Danger of Breakage!
Check the distance between the hook tip and the needle after
adjusting the lateral position of the needle bar linkage. It may
possibly be necessary to readjust the distance (see chapter 2.6.3).
4 3
GB
17