Appendix
105
2022-05 EN 50400685.00A.04
10.3 Troubleshooting
Fault Solution
Fabric does not feed well.
> Elongate the stitch length.
> Increase the presser foot pressure for heavyweight fabric.
> Decrease the presser foot pressure for lightweight fabrics.
> Check the setting of the differential feed.
Needle breaks
> Insert the needle correctly.
> Don't pull the fabric while sewing.
> Tighten the needle screw.
> Use a stronger needle for heavyweight fabrics.
Thread breakage
> Loosen the thread tension.
> Check the thread path.
> Check for tangled or caught thread.
> Insert the needle correctly.
> Insert new needles; the inserted needles may be defective.
> Use high-quality thread.
Skipped stitches
> Insert new needles; the inserted needles may be defective.
> Tighten the needle screw.
> Match the needle size with the fabric/thread.
> Insert the needles correctly.
> Change type or size of the needle.
> Check the thread path.
> Increase the presser foot pressure.
> Adjust the thread tension.
> Use high-quality thread.
Irregular stitches
> Adjust the thread tension.
> Check for tangled or caught thread.
> Check the thread path.
Fabric puckers
> Check the setting of the differential feed.
> Loosen the thread tension.
> Check for tangled or caught thread.
> Use high-quality thread.
> Shorten the stitch length.
> Decrease the presser foot pressure for lightweight fabrics.
Irregular trimming
> Check the alignment of the knives.
> Replace one or both knives.
Fabric jam
> Decrease the presser foot pressure.
> Check the setting of the differential feed.
> Check for tangled or caught thread.
> Baste thick layers of fabric first with a conventional sewing
machine before sewing it with the overlocker.
The fabric is not cut properly
> Set the cutting width to 9.
> Remove lint and remnants from the knife.
To Next Page
Loading...
