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7-3. Adjustment of slackness of tension discs
of thread tension regulator (lower)
(1) Raise the presser foot.
(2) Slacken set screw A of thread tension regulator.
(3) Adjust the bushing position in the arrow direction
in the figure to adjust the slackness at 0.8 to 1.0
mm.
(4) After the adjustment, tighten the set screw of
thread tension regulator.
[Notice] When the thread tension regulator set screw was slackened, make sure that the slackness
of thread tension discs is about 0.8 to 1.0 mm.
7-4. Adjustment of slackness of tension discs of thread tension regulator (upper)
(1) Raise the presser foot.
(2) Cylinder rod comes in between the tension discs. Under the state, confirm the slackness of
tension discs is about 1 mm.
[Notice] This adjustment cannot be made because the air cylinder is at the pulled state when the
presser foot is at bottom or when the control power is turned off.
Tension discs
Cylinder rod
Air cylinder
Set screw A
Approx. 1mm
- 15 -
0.8～1.0mm
Adjustment
direction
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