Delta MD 11871 Manual page 48

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