Setting Of Needle Stab Position; Timing Of Form Stitch Steering Cam To Needle Motion - Dürkopp Adler 52 i Series Service Instructions Manual

5.3 Setting of needle stab position

Proper setting
If the wheel steering cam of the straight stitch is mounted, the needle
should be located in both directions in the center of the throat plate needle
hole.
1. Adjust the needle position in feeding direction ( p. 22).
2. Adjust the needle lateral position so that the needle is located in the

5.4 Timing of form stitch steering cam to needle motion

Proper setting
When sewing the form stitch, the needle should shift in the lateral direction
at the time when it is over the sewn material.
Pic. 19: Timing of form stitch steering cam to needle motion
(1) - Cam
(2) - Conical worm
1. Dismantle the arm cover ( p. 13).
2. Mount any form stitch cam (1).
3. Loosen 4 screws (4).
4. Turn the conical worm (2) to the position where the proper setting is
5. Shift the conical worm (2) on touch with the regulating ring (3).
6. Tighten 4 screws (4).
7. Check whether the needle is without any motion at the time when it is
30
needle hole center ( p. 23).
①
②
complied with.
stabbed in the sewn material and adjust the setting, if needed.
Form stitch mechanism of machine 525
③
④
(3) - Regulating ring
(4) - Screws
Service Instructions 52Xi, 52Xi-75 - 00.0 - 11/2021