Winding The Hook Thread - DURKOPP ADLER 512 Operating Instructions Manual

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The thread regulator (1) regulates the amount of needle thread
required for forming the stitch. An optimum sewing result is only
possible when the thread regulator is exactly adjusted.
With the correct setting the needle thread loop must slide over the
thickest part of the hook at low tension.
1. Loosen the screw (3).
2. Adjust the position of the thread regulator (1).
Thread regulator to the left = larger amount of needle thread
Thread regulator to the right = smaller amount of needle thread
3. Tighten the screw (3).
Adjustment note:
When the maximum thread quantity is required then the thread
tension spring (2) must be pulled approx. 0.5 mm down from its
upper end position. This occurs when the needle thread loop
passes the maximum hook diameter.

4.4 Winding the hook thread

Figure 4: Winding the hook thread
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③
(1) – Thread clamp
(2) – Bobbin
(3) – Winder shaft
④
(4) – Bobbin lever
(5) – Guide
(6) – Tensioner
Operating Manual 512/532 Version 00.0 - 12/2013
Operation
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