DURKOPP ADLER 550-12-33 Operating Instructions Manual page 43

Operation
Operating Instructions 550-12-33/34 - 00.0 - 08/2017
Important
Fig. 22: Setting the hook thread quantity (3)
④
⑥
⑤
(4) - Thread bobbin case retainer
(5) - Lower bar
Do not alter the height of the hook thread take-up (10).
The hole (6) must always remain above the lower bar (5) of
the thread bobbin case retainer (4).
4. Tighten the screws (9).
5. Erect the machine head ( p. 148).
(6) - Hole
-
(10) Hook thread take-up
⑩
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