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10. STANDARD ADJUSTMENTS
10-7. Adjusting the upper thread trimming
The standard distance (A) between the upper thread scissors (1) and the center of the needle is 5.5 to 6.0 mm
when the work clamp is lowered by pressing the RESET key after setting the machine to the home position.
10-7-1. Adjusting the installation height of the upper thread scissors
2177Q
(2)
1 mm
(4)
74
Center of the needle
1 mm
(1)
(3)
(4)
(1)
(A) 5.5 – 6.0 mm
Loosen the screw (2), and then move the upper
2178Q
thread scissors (1) up or down to adjust the
clearance between the upper thread scissors (1) and
the work clamp (3) to approximately 1 mm.
NOTE:
The work clamp (3) will tilt when sewing joints, so
adjust so that the upper thread scissors (1) do not
touch it. If the upper thread scissors (1) touch the
work clamp (3), the work clamp lifter pulse motor
may get out of step.
* If the tilting of the work clamp (3) causes skipped
stitches to occur when sewing material joints,
use the accessory auxiliary sheet (4) as shown in
the illustration.
2179Q
HE-8000
2176Q
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