Long thread trimmer (LFA)
96 Service Instructions M-TYPE DELTA - 00.0 - 12/2019
6. Push the thread-pulling knife (4) to the left until the thread-pulling
knife (4) can pass freely between the bobbin and the nose of the bobbin
housing.
7. Tighten the screws (5).
8. Turn the counter blade (2).
The counter blade (2) lies lightly on the back third of the thread-pulling
knife (4).
9. Tighten the screw (1).
10. Move the hook thread clamp (3).
The hook thread clamp (3) lies lightly on the back third of the thread-
pulling knife (4).
11. Tighten the screws (6).
12. Perform a function test and correct the setting, if necessary.
15.4 Adjusting point in time for cutting
Fig. 79: 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 off:
1. Tilt the machine head ( p. 18).
2. Open the throat plate slides ( p. 28).
3. Loosen the threaded pins (6).
4. Turn the handwheel until the thread-pulling knife (4) can be swung out
by hand.
(1) - Roller
(2) - Set collar
(3) - Control cam
(4) - Thread-pulling knife
(5) - Counter blade
(6) - Threaded pins