Technical data

Operating the sewing unit
24
Operating manual 743-221-01 version 01.0 - 09/2013
5.7 Changing the bobbin
Fig. 9: Changing the bobbin
Remove the empty bobbin.
1. Lift the bobbin case flap (1).
2. Remove the upper bobbin case (7) with the bobbin (3).
3. Remove the empty bobbin (3) from the upper bobbin case (7).
4. Insert a full bobbin (3) into the upper bobbin case (7).
5. Pull the hook thread through the slit (6) underneath the tension spring (4)
into the drill-hole (5).
6. Pull about 5 cm of hook thread out of the upper bobbin case (7). When
pulling the thread, the bobbin (3) should turn into the direction indicated
by the arrow.
Caution: Danger of injury!
Turn off the main switch.
Change the hook thread bobbin only with the ma-
chine switched off.
ATTENTION!
Material damage
For a trouble-free functioning of the residual thread monitor, clean
the lenses of the reflecting light barrier (2) after each bobbin change
with a soft cloth.
ATTENTION!
(1) - Bobbin case flap
(2) - Light barrier
(3) - Bobbin
(4) - Tension spring
(5) - Drill-hole
(6) - Slot
(7) - Upper bobbin case
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