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3. Use the adjusting wheel (2) to set the initial hook thread tension of
4. Insert the bobbin case upper section with the braking spring (4) and
5. Close the bobbin case retainer.
Fig. 13: Adjusting the hook thread tension and the bobbin brake power (2)
(5) - Needle thread
6. Turn the handwheel while keeping needle thread (5) and hook
7. Shortly before the hook tip reaches the needle after the hook
Fig. 14: Adjusting the hook thread tension and the bobbin brake power (3)
(6) - Hook thread
The hook thread (6) has now been pulled up through the needle
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the leaf spring (3) to approx 20 gr.
• Increase the hook thread tension: Turn the adjusting wheel (2)
clockwise
• Reduce the hook thread tension: Turn the adjusting wheel (2)
counterclockwise
with the full bobbin into the bobbin case bottom section.
⑤
⑥
thread (6) under tension.
thread was picked up, tighten the needle thread (5) a little more.
⑦
hole (7).
(6) - Hook thread
(7) - Needle hole
Operating Instructions 755 B, 756 B/F - 00.0 - 02/2021
Operation
⑥
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