Duerkopp Adler 506-3 Service Instructions Manual page 41

Thread-extractor height
With the thread lever in its highest position the thread extractor 3
should pass freely under the needle.
4
–
Place material 4 of the maximum permissible thickness (t = 16 mm)
or a shim under the clamps.
–
Lower clamps.
–
Turn off the main switch.
CAUTION: danger of injury
Turn off the main switch.
The height of the thread extractor 3 may only be checked with
the main switch turned off.
–
Manually swivel the thread extractor 3 beneath the needle.
The thread extractor 3 must not touch the needle.
Adjustment:
–
Undo locking screw 2.
–
Adjust height of thread extractor 3.
–
Fully tighten locking screw 2.
3 2
3
37