JUKI MF-7900 Series Engineer's Manual page 83
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
1. Adjusting the looper thread trimmer solenoid
(1) Stroke of looper thread trimmer solenoid ❸ is 17.5 ± 0.5 mm.
(2) When adjusting the stroke, loosen setscrew ❷ of collar ❶ and
move collar ❶ to the right or left to adjust.
(3) After adjusting the stroke, loosen screw from the lower side,
and move collar to the left and right to adjust so that the
distance between rubber cushion and UT base is 18 mm.
Results of Improper adjustment
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