Duerkopp Adler 669 Premium Operating Instruction page 27

Operation
Operating Instructions 669 PREMIUM - 00.0 - 11/2016
2. Feed the thread from the rear to the front through the thread
guide (2) on the unwinding bracket.
3. Use a compressed air gun to feed the thread through the hose
guide (1).
Fig. 6: Threading the needle thread (2)
③
④
⑤
(3) - Tightening lever
(4) - Spring tip
(5) - Thread tension spring
(6) - Thread guide
4. Feed the thread clockwise from the hose guide (10) around
the pre-tensioner (9).
5. Feed the thread counterclockwise around tensioner 1 (8).
6. Feed the thread clockwise around tensioner 2 (7).
7. Feed the thread under the thread guide (6) to the thread
tension spring (5).
8. Lift the tightening lever (3) with the thread.
9. Pull the thread under the spring tip (4).
(7) - Tensioner 2
(8) - Tensioner 1
(9) - Pre-tensioner
(10) - Hose guide
⑩
⑨
⑧
⑦
⑥
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