Thread trimmer
Service Instructions 867 - 04.0 - 10/2019 73
15.4 Adjusting point in time for cutting
Fig. 60: Adjusting point in time for cutting
Proper setting
The threads are cut when the thread lever is at the top dead center (hand-
wheel position 60°).
To adjust the point in time for cutting:
1. Tilt the machine head ( p. 14).
2. Open the throat plate slides ( p. 18).
3. Loosen the threaded pins (6).
4. Turn the handwheel until the thread-pulling knife (4) can be swung out
by hand.
5. Swivel the thread-pulling knife (4) forward until the circle mark is exactly
next to the tip of the counter blade (5).
6. Adjust the handwheel position to 60°.
7. Push the control cam (3) to the left as far as it will go and against the
set collar (2).
8. Turn the control cam (3) such that the roller (1) runs up at the contour
of control cam (3) and the widest extent of the control cam is at hand-
wheel position 60° at the highest point.
9. Tighten the threaded pins (6).
10. Check adjustment:
• Insert the thread into thread-pulling knife (4) and slowly turn
the handwheel.
• Check the handwheel position at which the thread is cut.
11. If necessary, repeat adjustment steps 1 – 7 until the cut takes place
at 60°.
(1) - Roller
(2) - Set collar
(3) - Control cam
(4) - Thread-pulling knife
(5) - Counter blade
(6) - Threaded pins
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