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HE-800A
10. STANDARD ADJUSTMENTS
75
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. 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.
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. Adjusting the installation height of the upper thread scissors
Loosen the screw (1), and then move the upper thread scissors (2) up or down to adjust the clearance between the
upper thread scissors (2) 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 (2) do not touch it. If the
upper thread scissors (2) 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.
4103M
3983Q
3982Q
Center of the needle