JUKI MF-7900 Series Engineer's Manual page 91
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
(10) Adjusting the thread trimmer sensor
The safety switch is installed so that the sewing machine does not
start unless the looper thread trimmer device returns to its home
position.
1. Loosen setscrews .
2. Adjust switch plate so that LED of thread trimmer sensor
lights up in the state that the thread trimmer device is fully
returned to its home position.
3. Tighten setscrews .
(Caution) Perform the work with the needle bar at the highest
position when actuating the thread trimmer mecha-
nism by hand.
Results of Improper adjustment
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