Minor problems and solutions, Skipped stitches, Thread breaking – SINGER W1240 User Manual

Page 47

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MINOR PROBLEMS AND SOLUTIONS

1. SKIPPED STITCHES

Skipped stitches have become a problem in recent years,

especially with the appearance of knit fabrics and polyester
threads on the market. Skipped stitches normally can be traced to
four basic causes:
A. The Needle

ID The needle is dull or bent. Change it.
12) The needle is placed incorrectly in the needle clamp. It is

either backwards or is not up in the needle clamp all the
way.

13) The wrong type of needle is being used for the fabric.

Use ball point needle on knits and wedge point needles

for leathers and vinyls.

14) the thread is too thick for the size of needle being used.

Use a large needle.

B. The Thread

ID The machine is threaded incorrectly.
12) Many brands of polyester thread are too stiff and coarse

thus making loop formation difficult or impossible.

Change brands or use a cotton thread.

C. The Presser Foot

ID The foot being used is not holding the fabric taut enough

over the needle plate hole, thus the fabric is being pulled
up and down while stitching. Use the foot which gives
the most control possible for the particular job being
done.

12) There is not enough pressure on the presser bar to hold

the fabric firmly. Increase pressure on the pressure con­
trol

D. The Fabric

The fabric has a heavy finish on it which deters stitch for­
mation. Wash the fabric thoroughly before sewing.

2

.

A.

B.

C.
D.

E.

F.
G.
H.
I.

THREAD BREAKING

Machine improperly threaded.

Thread is caught in a slit of the spool or under
the spool
Thread is dry or of poor quality.
Tension is too tight.

Starting the machine with take-up lever in the

wrong position. Always start and end sewing
with take-up lever in highest position.
Needle is bent, blunt, or has a burr on it.
Needle is not inserted correctly.
Thread is too coarse for needle being used.
Needle plate has been nicked by the needle, thus
is sharp and cuts the threads.

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