Dürkopp Adler 52Xi Service Instructions Manual page 46

5. Tighten the screw (3).
6. Loosen two screws (1), try to set the timing of the feeding eccentric
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and tighten the screws (1). Sew and watch the size of the space (C)
at the moment when the thread is passing through the space. Correct
the timing so that (C) = 1 mm.
Needle bar and hook
Service Instructions 52Xi, 52Xi-75 - 03.0 - 09/2023