Technical data

Operating the sewing unit
22
Operating manual 743-221-01 version 01.0 - 09/2013
Adjustment instruction:
The thread regulator's (2) is correctly adjusted if:
The thread take-up spring (1) is pulled down about 1 mm from its upper
final position, when the thread loop (6) passes the maximum hook
breadth.
The length of 1 mm is an approximative guide value. Depending on the
tension of the thread take-up spring it may be higher or lower.
5.6 Winding on the hook thread
Fig. 8: Winding on the hook thread
1. For a trouble-free functioning of the residual thread monitor always
remove any thread waste from the bobbin hub before winding.
2. Thread the hook thread according to the picture.
3. Prewind the hook thread in clockwise direction into the reserve groove
of the bobbin hub.
4. Fit the bobbin on the winder shaft (2).
5. Pull the thread end through the trimming clamp (3) and cut it off.
Caution: Danger of injury!
Turn off the main switch.
Thread the hook thread for winding only with the
sewing unit switched off.
ATTENTION!
(1) - Bobbin thread tension
(2) - Winder shaft
(3) - Trimming clamp
(4) - Winder clip
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