Tabla de contenido
Troubleshooting
Condition
The needle thread
breaks.
The bobbin thread
breaks.
The needle breaks.
Skipped stitches
Cause
Reference
1o 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 pressure 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,,
Page 26
Pages 28
Page 10
Page 10
Page 26
Page38
Page16
Page 22
Page 92
Changethe
bobbin
Page 10
Page 10
Page 10
Pages 28
Page 38
Page 16
Page lO
PagelO
Page16
Page 16
Page 26
Change the needle
Seam puckering
1, The needle thread tension is too tight,
Pages 28
2, The needle thread is not threaded properly,
Page 26
3, The needle is too heavy for the fabric being sewn,
Page 16
4, The stitch length is too long for the fabric
Make stitch denser
The cloth is not
1,, The stitches are too fine,
Make stitch coarser
feeding smoothly.
2_ The feed dog is not raised after "drop feed" sewing.
Page 46
3, The feed clog is packed with lint,
Page 92
The machine
1, The machine is not plugged in,
Page 6
doesn't work.
2. A thread is caught in the shuttle race.
Page 92
3. Push-clutch is disengaged
Pages 22
Patterns are
1 The stitch is not balanced,
Page 36
distorted.
Noisy operation
1, There is thread caught in the hook race,
Page 92
2 Lint has built up in the shuttle or the shuttle race,
Page 92
94
Tabla de contenido
