Bernina 532-2 User Manual
Page 29
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The
threading
of the bottom thread
when sewing buttonholes automatically
An increased tension of the bottom thread produces
best results when sewings buttonholes automatically.
To get this higher bottom thread tension without
changing the lower tension itself, which is correct
for normal sewing, a hole was drilled through the
finger of the bobbin case through which the bottom
thread has to be threaded (see adjoining illustration).
KJ. £30 t
Through this measure the bottom thread tension is slightly increased and the hook
will take less thread from the bobbin which is correct for good buttonhole sewing.
For normal sewing the bobbin case is threaded as explained in the instruction booklet
on page 17.
52
©
© Sti
Lever (for actuating
the locking catch)
Stitch-length lever
F \i .
2a