Standard Adjustment; Threading The Machine Head - JUKI MF-7900 Series Engineer's Manual
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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4. Standard adjustment
(1) Threading the machine head
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
❶
❸
❶
A
Broken lines A when stretcher thread
is used
When using more stretchable
thread
Standard adjustment
❷
❹
B
C
When covering thread is excessively
loosened = B
When covering thread is excessively
loosened even after passing B = C
❸
When using less stretchable
thread
– 4 –
❷
When covering thread is
excessively tense = D
❹
Broken line E when using more stretchable thread
E
F
D
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