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Thread trimmer
To adjust the cutting pressure:
1. On 2-needle machines:
2. Loosen the screw (2).
3. Swing out the thread-pulling knife (3) until the arrow marking points
4. Tighten the screw (2).
5. Perform a cutting test and readjust the cutting pressure if necessary.
13.4
Fig. 71: Adjusting point in time for cutting
(1) - Roller
(2) - Control cam
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. 18).
2. Open the throat plate slide.
3. Loosen the threaded pins on the control cam (2).
4. Move the thread-pulling knife (4) to its initial position.
5. Adjust the handwheel position to 60°.
6. Turn the control cam (2) such that the roller (1) runs up at the contour
7. Tighten the threaded pins on the control cam (2).
Service Instructions D869 e-con - 00.0 - 09/2023
Loosen the screw (1) before tightening it again to move it slightly against
the counter blade (4).
to the cutting edge of the counter blade (4).
Adjusting point in time for cutting
①
②
of control cam (2) and the widest extent of the control cam (2) is at
handwheel position 60° at the highest point.
③
(3) - Counter blade
(4) - Thread-pulling knife
④
85
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