Setting the bobbin case lifter
Service Instructions 1767 - 00.0 - 12/2016 61
12.1 Setting the lifting gap
Order
Always check the width of the lifting gap after making changes to the
needle thread size. The correct width of the lifting gap depends on the
thickness of the needle thread.
Proper setting
The needle thread slides through unobstructed between the nose of the
bobbin case and the slot in the throat plate.
Cover
• Tilt the machine head ( p. 14)
• Open the throat plate slide ( p. 21)
Fig. 45: Setting the lifting gap
To set the lifting gap:
1. Loosen the screw (3).
2. Push the cover (2) downwards.
3. Loosen the threaded pin (1).
4. Set 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.
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.
5. Tighten the threaded pin (1).
6. Push the cover (2) upwards.
7. Tighten the screw (3).
(1) - Threaded pin
(2) - Cover
(3) - Screw
(4) - Bobbin case lifter
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