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Trouble Cause (1) Cause (2) Check and corrective measures
3.Stitch skipping 3-1)Inadequate hook mounting 1-A)Excessive clearance between Adjust the clearance between the needle and the blade
the needle and the blade point of the hook. (Refer to adjustment of the hook
point of the hook and needle.)
1-B)Inappropriate timing for the Adjust the timing between the needle and the blade
needle and hook point of the hook. (Refer to adjustment of the hook
and needle.)
1-C)Blunt blade point of the hook Sharpen the blade point of the hook.
3-2)Maladjustment of needle guide 2-A)Excessive clearance between Adjust the clearance between the needle and needle
the needle and needle guide holder. (Refer to adjustment of the timing between
the needle and hook.)
2-B)Excessive contact between Adjust the clearance between the needle and needle
the needle and needle guide holder. (Refer to adjustment of the timing between
the needle and hook.)
3-3)Misalignment of the needle bar Adjust the position of the needle bar rocking base in
rocking base in the front-rear the front-rear direction. (Refer to alignment of the
direction needle bar rocking base in the front-rear direction.)
3-4)Defective needle 4-A)Bent or blunt needle Replace the needle with new one.
4-B)Wrong needle size selected Select an appropriate needle size.
3-5)Inappropriate clearance Adjust the binder lowering position.
between the sewing table (Refer to adjustment of the binder mechanism.)
and binder
3-6)Defective garment clamp 6-A)Inappropriate clamp pressure Set the pressure to 0.5 MPa.
with the clamp foot
3-7)Inappropriate lock stitch Adjust the stitch length to 2.0 mm.
sewing speed
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