Fabric puckers

Embroidery pattern does not sew out correctly.

Needle breaks.

Upper thread breaks.

Stitches are skipped

When embroidering a couching pattern, the upper thread tension was disturbed.

High-pitched sound while embroidering

Cannot lower the embroidery foot with the presser foot lever.

Cannot thread the needle.

The handwheel feels sluggish when it is turned.

The needle contacts the needle plate.