Threading Mechanism - Bernina B 590 Service And Maintenance Manual

4.3.16 Threading mechanism

Disassembly:
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Unhook tension spring 9.
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Unhook tension spring 10.
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Move needle bar 11 down.
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Move threader holder 12 down.
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Pinch pressure spring 13.
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Remove dowel 14 with tweezers.
•
Slide threader bar 15 down and out.
Assembly:
•
Position threader holder 12 on needle-bar support.
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Slide threader bar 15 in from below by 3/4.
•
Insert pressure spring 13 onto threader bar. Slide threader bar up entirely.
•
Pinch pressure spring 13.
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Refit dowel 8.
•
Position dowel 8 in such way that the pressure spring sits in the entry of the dowel 8 (pict. a).
•
Rehook tension spring 10.
•
Rehook tension spring 9.
BERNINA International AG Seestrasse 161 CH-8266 Steckborn
DRAFT – VERSION
10
11
Schweiz
13
9
14
12
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