Dürkopp Adler D869 e-con Service Instructions Manual page 78

On 2-needle machines:
Fig. 63: Adjusting the spring tension (2)
(1) - Spring balance
(2) - Scale
(3) - Front thread tensioning spring
(4) - Rear thread tensioning spring
To adjust the spring tension:
1. Hook the front spring balance (1) into the front thread tensioning
2. Pull on the spring balance (1) until the thread tensioning spring starts
3. Loosen the threaded pin (8).
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①
②
③
④
⑤
spring (3).
moving.
Adjusting the needle thread tension
⑥ ⑦ ⑧
(5) - Slot
(6) - Screw
(7) - Knurled nut
(8) - Threaded pin
Service Instructions D869 e-con - 00.0 - 09/2023