Troubleshooting - Janome 8048 Manual De Instrucciones

Troubleshooting

Condition
1. The needle thread is not threaded properly.
The needle thread
2. The needle thread tension is too tight.
breaks.
3. The needle is bent or blunt.
4. The needle is incorrectly inserted.
5. The needle thread and the bobbin thread are not set under the
presser foot when start sewing.
6. The thread were not drawn to the rear after sewing.
7. The thread is either too heavy or too fine for the needle.
The bobbin thread
1. The bobbin thread is not threaded properly in the bobbin holder.
breaks.
2. Lint has collected in the bobbin holder.
3. The bobbin is damaged and doesn't turn smoothly.
The needle breaks.
1. The needle is incorrectly inserted.
2. The needle clamp screw is loose.
3. The threads were not drawn to the rear after sewing.
4. The needle is too fine for the fabric being used.
Skipped stitches
1. The needle is incorrectly inserted, bent or blunt.
2. The needle and/or threads are not suitable for the work being
sewn.
3. A Blue Tip needle is not being used for sewing stretch, very
fine fabrics and synthetics.
4. The needle thread is not threaded properly.
5. A poor quality needle is used.
1. The needle thread tension is too tight.
Seam puckering
2. The needle thread is not threaded properly.
3. The needle is too heavy for the fabric being sewn.
4. The stitche length is too long for the fabric.
The cloth is not
1. The feed dog is packed with lint.
feeding smoothly.
2. The stitches are too fine.
3. The feed dog is not raised after "drop feed" sewing.
Stitches form loops
1. The needle thread tension is too loose.
below the works.
2. The needle is either too heavy or too fine for the thread.
The machine does not
1. The machine is not plugged in.
work.
2. Thread has been caught in the hook race.
3. The bobbin winder spindle is not returned to the left after bobbin
winding.
Buttonhole sewing is
1. The stitch density is not suitable for the fabric being sewn.
not sewn properly.
2. Suitable interface material has not been used for the stretch
or synthetic fabric.
The machine does not
1. Thread has been caught in the hook race.
run smoothly and is
2. Lint has built up in the hook race or bobbin holder.
noisy.
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Cause
75
Reference
See page 24
See page 16
See page 18
See page 18
See page 26, 28
See page 28
See page 18
See page 22
See page 70
Exchange bobbin.
See page 18
See page 18
See page 28
See page 18
See page 18
See page 18
See page 18
See page 24
Change the needle.
See page 16
See page 24
See page 18
Make the stitch coarser
See page 70
Make the stitch coarser.
See page 14
See page 16
See page 18
See page 8
See page 70
See page 20
See page 48
See page 42
See page 70
See page 70