Bobbin case lifter
Service Instructions 827/827-M - 01.0 - 05/2019 51
11.1 Adjusting the lifting gap
Fig. 34: Adjusting the lifting gap
Proper setting
The needle thread slides through unobstructed between the nose of
the bobbin housing and the recess in the throat plate.
To adjust the lifting gap:
1. Tilt the machine head ( p. 14).
2. Open the throat plate slide ( p. 18).
3. Loosen the screw (3).
4. Push the cover (2) downwards.
5. Loosen the threaded pin (1).
6. Adjust the bobbin case lifter such that the gap between the nose of the
bobbin case and the slot in the throat plate is just big enough to allow
the needle thread to slip through without a problem.
While doing so, ensure that the gap is not so big that the middle part
of the hook swings back and forth, hitting the slot in the throat plate.
7. Tighten the threaded pin (1).
8. Push the cover (2) upwards.
9. Tighten the screw (3).
(1) - Threaded pin
(2) - Cover
(3) - Screw
(4) - Bobbin case lifter
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