Thread trimmer
Service Instructions 827/827-M - 01.0 - 05/2019 63
14.4 Adjusting point in time for cutting
Information
The control cam for the right-hand needle or the right-hand hook support
is identified by an R and an arrow for the direction of rotation.
The control cam for the left-hand needle or the left-hand hook support is
identified by an L and an arrow for the direction of rotation.
Fig. 46: Adjusting point in time for cutting
Proper setting
The threads are cut when the thread lever is at the top dead center
(handwheel position 60°).
To adjust the point in time for cutting:
1. Tilt the machine head ( p. 14).
2. Open the throat plate slide ( 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. Pivot the thread-pulling knife (4) as far 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).
(1) - Roller
(2) - Set collar
(3) - Control cam
(4) - Thread-pulling knife
(5) - Counter blade
(6) - Threaded pins
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