SINGER W510 - Manual (Page 55)

2 .
A.
B.
C.
D.
E.
F.
G.
H.
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 posi­
tion.
Needle is bent, blunt, or has a burr on it.
Needle is not inserted correctly.
Thread is too coarse for needle being
used.
I. Needle plate has been nicked by the
needle, thus is sharp and cuts the threads.
3 . NEEDLE COMES UNTHREADED
A. Take-up lever is not in correct position as
you start sewing. Always start and end
with your take-up lever in its highest
position.
4 . NEEDLE BREAKS
A. Pulling on fabric while sewing bends the
needle, this may cause breakage if needle
hits the plate.
B. Needle is inserted incorrectly.
C. Needle is too fine for the type of fabric.
D. Needle is hitting pins.
E. Presser foot is improperly fastened.
F. Machine is improperly threaded.
5. MATERIAL PUCKERS
A. Tensions are too tight.
B. Improper threading.
C. Thread is too heavy for fabric.
D. Stitch is too long for fabric.
E. Needle is duli so it is difficult to seam
fabric.
F. The presser foot being used is not holding
the fabric taut enough.
G. If all else fails, try sewing over paper.
6 . THREADS JAM AT START OF SEWING
A. Hold the threads tightly for the first few
stitches.
B. Place thread ends under and to the side
of presser foot instead of to the back.
C. Be sure the presser foot is down on thick
fabrics.
7. MACHINE IS NOISY
A. Clean and oil it.
B. If it is a punching sound, changing the
needle.
C. Stitch length dial is not at 5 or SS when
stretch-stitching — Set is at 5 or SS.
D. Your machine is equipped with a two
speed motor. At the lower range you may
encounter a noticeable hum, due to
increased power or torque needed to
operate your machine.
8 . BOBBIN DOES NOT WIND PROPERLY
A. Machine is improperly threaded.
B. Rubber wheel on bobbin winder is worn
or not making contact.
C. Bobbin winder tension disc is not in
position.
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