Adjusting The Counter Blade - DURKOPP ADLER 867 Service Instructions Manual

Short thread cutter (KFA)
10. Loosen all 4 screws (6) on the set collar and push the set collar (6) as
11. Tighten all 4 screws on the set collar (6).
12. Check the loop stroke ( p. 50).

16.4 Adjusting the counter blade

Fig. 65: Adjusting the counter blade (1)
(1) - Thread-pulling knife
(2) - Marking
Proper setting
The thread must be reliably cut using little pressure. The pressure is built
up starting at the marking (2).
Any 2 threads with the greatest strength used for sewing can be neatly cut
simultaneously.
Checking the proper setting
To check the proper setting of the counter blade:
1. Turn the handwheel until the thread-pulling knife (1) can be swung out
2. Swing out the thread-pulling knife (1) manually. To do this, press
3. Insert 2 threads into the thread-pulling knife (1).
4. Turn the handwheel until the knife swivels down.
5. Check whether the sewing threads have been cleanly cut and pressure
Disturbance
Disturbances caused by an incorrect setting:
Service Instructions 867 - 04.0 - 10/2019
far as it will go and against the control cam (7).
①
②
after the latch is triggered.
the lever with the roller (3) to the right against the control cam (4).
is built up starting at the marking (2).
• Increased knife wear when the pressure is too great
• Problems in cutting the thread
③
(3) - Roller
(4) - Control cam
④
79