How To Change Needle Bar Stroke - 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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(20) How to change needle bar stroke
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
1.
Changing the needle bar stroke (31 mm → 33 mm)
Needle bar stroke is 31 mm in the state that notch mark F on the edge of the eccentric pin ❺ is lo-
cated on the side of the center of main shaft (standard delivery adjustment).
At the time of 31 mm
❹
Standard adjustment
F
❻
G
❻
Draw out by more than 1 mm
❺
At the time of 33 mm
– 54 –
❻
❺
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