Bernina B 570 - Threading Mechanism

BERNINA International AG Seestrasse 161 CH-8266 Steckborn Schweiz Seite 77 von 172
DRAFT – VERSION
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4.3.16 Threading mechanism
Disassembly:
• Unhook tension spring 9.
• Unhook tension spring 10.
• Move needle bar 11 down.
• Move threader holder 12 down.
• Pinch pressure spring 13.
• Remove dowel 14 with tweezers.
• Slide threader bar 15 down and out.
Assembly:
• Position threader holder 12 on needle-bar support.
• 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.
• 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.