Operation Manual

Operating Instructions 650-10 - 02.0 - 10/2015 27
Fig. 10: Replacing the hook thread bobbin
Change the hook thread bobbin as follows:
Removing an empty bobbin
1. Push the hook cover (2) downwards.
2. Move the needle to the top dead center.
3. Lift the bobbin case retainer (1).
4. Remove the bobbin case upper section (7) with the bobbin (3).
5. Remove the empty bobbin (3) from the bobbin case upper
s
ection (7).
Inserting a full bobbin
1. Insert the full bobbin into the bobbin case upper section (7).
2. Feed the hook thread through the slot (4) under the tensioning
sp
ring (5) into the hole (6).
3. Pull the hook thread approx. 5 cm out of the bobbin case (7).
4. The bobbin must rotate in the direction of the arrow when pull-
ing out the thread.
5.
Ins
ert the bobbin case upper section (7) again.
6. Push the hook cover (2) upwards.
(1) - Bobbin case retainer
(2) - Hook cover
(3) - Bobbin
(4) - Slot
(5) - Tensioning spring
(6) - Hole
(7) - Bobbin case upper section
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