JUKI MF-7900 Series Engineer's Manual page 39
High-speed, cylinder-bed top and bottom coverstitch machine
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Also See for MF-7900 Series:
- Instruction manual (30 pages) ,
- Specification (8 pages) ,
- Quick start manual (2 pages)
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Adjustment procedures
Remove rubber cap ❷ in the face plate, loosen setscrew ❸ in
1.
the needle bar bracket and adjust the height of the needle bar.
2.
After adjusting the height, equally adjust the clearance A be-
tween needle ❶ and needle hole D in the throat plate and fix
the needle bar with setscrew ❸ in the needle bar bracket.
Results of Improper adjustment
◦ When the height of the needle is
excessively different, stitch skip-
ping, needle breakage, thread
breakage, etc. will be caused.
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