Stitching forms loops, Seams shrink or pucker, The machine does not work smoothly and is noisy – SINGER W159 User Manual
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STITCHING FORMS LOOPS
CAUSE
REMEDY
1. The thread tension is not properly adjusted.
See instructions for adjustment of upper and lower iliread
2. The needle is not threaded correctly and/or the bobbin is
tensions.
Thread the needle and/or rewind the bobbin properly.
not wound properly.
3. The weight of the material and the size of the thread are
See instructions covering the use of proper needle and
not appropriate.
threads with varying materials.
4. Thread take-up spring does not work well.
Replace it.
SEAMS SHRINK OR PUCKER
1. The thread tension is too tight.
2. The pressure of the presser foot is too strong.
3. Stitches are too small for the weight of the material.
See instructions for adjustment of upper and lower thread
tensions.
See instructions for adjustment of the pressure of the
presser foot.
Adjust the stitch length.
IRREGULAR STITCHING
1. The upper and lower threads are of inferior quality.
Use thread of best quality.
2. The thread is wound around the bobbin unevenly.
Rewind it.
THE MACHINE DOES NOT WORK SMOOTHLY AND IS NOISY
1. The machine is in need of oil
2. Dust and waste thread have collected in the shuttle mechanism.
3. Oil of inferior quality is used and has coagulated.
Apply oil as per instructions.
See instructions pertaining to cleaning the race and shuttle.
Clean thoroughly and oil again with proper sewing machine oil
of the best quality.
4. The tension on the belt is too tight.
Loosen the belt tension.
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