Tabla de contenido
Troubleshooting
Condition
The needle thread
breaks.
"Thebobbin thread
breaks.
The needle breaks.
Skipped
stitches
Seam puckering
The cloth is not
feeding
smoothly,
Cause
Reference
t, The needle thread is not threaded properly,
2. The needle thread tension is too tight
3, The needle is bent or blunt,
4 The needle is incorrectly inserted.
5 The needle thread and the bobbin thread are not set properly
under the presser foot when sewing is starting_
6. The fabric is not drawn to the rear when sewing is finished.
7, The thread is too heavy or too fine for the needle_
1, The bobbin thread is not threaded properly in the bobbin
case and shuttle.,
2 Lint has collected in the shuttle area
3, The bobbin is damaged and doesn't turn smoothly,
1 ,.The needle is incorrectly inserted
2, The needle is bent or blunt,
3 The needle clamp screw is loose,,
4, The needle thread tension is too tight,
5, The fabric is not drawn to the rear when sewing is finished
6 The needle is too fine for the fabric being sewn,
1, The needle is incorrectly inserted
2 The needle is bent or blunt,
3., The needle and/or threads are not suitable for the work being
seWn,
4. A blue needle is not being used for sewing stretch, very fine
fabrics and synthetics.
5 The needle thread is not threaded properly.
6. The wrong needle is used.
1, The needle thread tension is too tight,
2, The needle thread is not threaded properly,
3 The needle is too heavy for the fabric being sewn,
4, The stitch length is too long for the fabric,
1. The machine is not plugged in.
2 The stitches are too fine.
3. The feed dog is not raised after "drop feed" sewing.
Page 24
Pages 26, 28
PagelO
PagelO
Page 24
Page32
Page14
Page22
Page 64
Changethe
bobbin
PagelO
PagelO
PagelO
Pages 26, 28
Page 32
Page14
PagelO
PagetO
Page14
Page14
Page 24
Changethe
needle
Pages26,28
Page 24
Page14
Make stitch denser
Page6
Make stitchcoarser
Page38
The machine
1, The feed dog is packed with lint,
Page 62
doesn't work.
2 A thread is caught in the shuttle race
Page 64
3, Push-clutch is disengaged,
Pages 18, 20
Patterns
are
t The stitch is not balancedr
Page 30
distorted.
Noisy operation
t There is thread caught in the hook race
Page 64
2, Lint has built up in the shuttle or the shuttle racer
Page 64
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Tabla de contenido
