Chapter 4 - Removal And Refitting Of Components; Covers See Esd-Related Note; Service Cover - Bernina B 590 Service And Maintenance Manual

Chapter 4 – Removal and Refitting of Components
4.1 Covers
See ESD-related note

4.1.1 Service Cover

Disassembly:
• Picture 1 - Slide service cover to left to remove.
• Picture 2 - Untighten fastening screw (T10) in
head area by 2 to 4 rotations.
• Picture 3 - Remove fastening screw in thread-
redirection/pre-tensioner area on head cover.
• Picture 4 - Carefully pull head cover to front and
out, spreading it a little at the bottom right area.
Assembly:
• Carefully pull head cover over machine head.
IMPORTANT: Doing this, take care of the spring
locks, especially the latch in the head frame (pict in
bottom left corner in pict 2).
• Firmly push head cover in place. Carefully
retighten screw in head area (pict 2).
• Refit fastening screw in thread-redirection/pre-
tensioner area and retighten carefully (pict 3).
• Insert service cover into respective openings, then
slide to right (pict 1)
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