Operation
Operating Instructions 669 - 00.0 - 08/2019 25
To change the bobbin:
1. Raise the needle bar into its high position.
2. Pull out the hook cover (1) and fold dow.
3. Lift up the bobbin case retainer (2).
4. Take out the upper part of the bobbin enclosure (3) with the
bobbin.
5. Remove the empty bobbin from the upper part of the bobbin
enclosure (3).
Fig. 7: Changing the bobbin (2)
6. Put a full bobbin in the upper part of the bobbin enclosure (3).
Please note the rotational direction of the bobbin.
The rotation is correct when the bobbin turns in the opposite
direction of the pulling direction of the thread.
7. Pull the hook thread through the slot (7) under the tension
spring (6) and then through the hole (5).
8. Pull out the tension spring (6) from the bobbin enclosure (3)
about 5 cm.
When the thread is being pulled out, the bobbin must rotate
in the direction shown by the arrow.
9. Replace bobbin enclosure (3).
10. Close bobbin case retainer (2).
11. Close the hook cover (1).
(2) - Bobbin case retainer
(3) - Bobbin enclosure
(4) - Bobbin
(5) - Hole
(6) - Tension spring
(7) - Slot
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