Adjusting the bobbin case lifter
Service Instructions 867 - 04.0 - 10/2019 55
11.1 Adjusting the lifting gap
Fig. 38: Adjusting the lifting gap (1)
Always check the width of the lifting gap after making changes to the nee-
dle thread size. The correct width of the lifting gap depends on the thick-
ness of the needle thread.
Proper setting
The needle thread slides through unobstructed between the nose of
the bobbin case (1) and the slot in the throat plate (2).
To adjust the lifting gap:
1. Tilt the machine head ( p. 14).
2. Open the throat plate slides ( p. 18).
Fig. 39: Adjusting the lifting gap (2)
3. Loosen the screw (5).
4. Push the cover (4) downwards.
5. Loosen the threaded pin (3).
6. Set the bobbin case lifter (6) so that the gap between the nose of
the bobbin case (1) and the slot in the throat plate (2) is just large
enough to allow the needle thread to slip through without a problem.
Important
Ensure that the gap is not too big. The middle part of the hook must not
swing back and forth, hitting the slot in the throat plate (2).
(1) - Nose of the bobbin case (2) - Slot in the throat plate
(3) - Threaded pin
(4) - Cover
(5) - Screw
(6) - Bobbin case lifter
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