Adjusting The Timing For Opening - DURKOPP ADLER 991-210-10 Series Service Instructions Manual

8.2 Adjusting the timing for opening

Fig. 27: Adjusting the timing for opening
(1) - Plug
Proper setting
The bobbin case lifter starts to open exactly at the point when the hook tip
is located below the bobbin case lifter after the loop is taken up.
To adjust the timing for opening:
1. Swivel up the machine head ( p. 14).
2. Remove the plug (1).
3. Press down and turn the hand crank until the tip of the needle is level
 The threaded pin (2) is accessible from the underside of the hook
4. Loosen the threaded pin (2) and use an allen key to turn it so that the
5. Tighten the threaded pin (2).
6. Insert the plug (1) into the opening.
40
①
with the throat plate.
support.
allen key stands exactly vertical.
Adjusting the bobbin case lifter
②
(2) - Threaded pin
Service Instructions 911-210-10 - 00.0 - 06/2020