Thread Cutter - Bernina B 590 Service And Maintenance Manual

5.7.4 Thread cutter

Check:
•
The thread cutting unit should be lockable with 3mm pinning tool 007937.50.00
when the cutting-unit release lever is in its left home position.
•
Positioning pin a must be exactly in corner b of
the thread guide plate.
Adjustment:
•
If 3mm pinning tool 007937.50.00 cannot be
inserted, check clutch carriage fitting (see
4.4.11)
Positioning pin
•
Untighten two thread-guide plate screws e (T8
angled Torx wrench).
•
Untighten thread-guide plate screw c (T8,
angled Torx wrench) and thread-stop nut d
(ring wrench 5).
•
From the left and with the index of your left
hand, move the thread guide plate in the opening slightly
back diagonally, taking care that the end of the positioning
pin sits exactly in corner b.
•
Untighten thread-guide plate screw c (T8 angled Torx
wrench) and thread-stop nut d (ring wrench 5).
•
Untighten two thread-guide plate screws e (T8, angled
Torx wrench).
BERNINA International AG Seestrasse 161 CH-8266 Steckborn
DRAFT – VERSION
007937.50.00
e
Schweiz
a
b
e
c
d
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