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Model Number: MD 11871
50
Malfunctions Cause Remedy
after sewing.
Needle is too thin to stitch the
cloth.
See page 14
Pattern selection dial I not
turned properly.
See page 22
Needle is not inserted correctly. See page 14
Needle is bent or dull.
Insert a new
needle.
Neither needle nor thread fit for
sewing.
See page 14
Machine skips stitches
Upper threading is incorrect. See page 18
Upper thread tension is too
tight.
See page 21
Threading is incorrect.
See pages 15
and 18
Sewing foot pressure is to high. See page 28
Fabric puckers or gathers
of seam
Stitches are too big to sew the
cloth.
Non-woven lining under the
cloth is required for stitching
very thin cloth.
Put a non-
woven lining
under the cloth.
Upper thread tension is too low. See page 21
Thread makes loops
The combination of needle size,
thread size and fabric is
incorrect, either too thick or too
thin.
See page 14
Fibres block the feed dog. See page 46
Feed dog is discharged. See page 27
Fabric does not feed
properly
Stitches are too small. See page 23
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