Troubleshooting - Janome 49018 Manuel D'instructions

Troubleshooting

Condition
The needle thread
breaks.
The bobbin thread
breaks.
The needle breaks.
The needle thread
loops.
Skipped stitches
Seam puckering
The cloth is not fed
smoothly.
The machine does not
work.
Patterns are distorted.
Noisy operation
1. 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
drawn to the rear and set properly under the presser
foot when starting sewing.
6. The threads are not drawn to the back when cut after
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 holder.
2. Lint has collected in the bobbin holder.
3. The bobbin is damaged and does not turn smoothly.
4. The thread is wound loosely on the bobbin.
1. Needle is incorrectly inserted.
2. The needle is bent or blunt.
3. The needle clamp screw is loose.
4. A proper foot is not used.
5. The threads are not drawn to the back when cut after
sewing is finished.
6. The needle is too fine for the fabric being sewn.
1. The needle thread tension is too loose.
2. The needle size is not suitable for the thread.
1. The needle is incorrectly inserted.
2. The needle is bent or blunt.
3. The needle and/or thread are not suitable for the
fabric being sewn.
4. The needle thread is not threaded properly.
5. A poor quality 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.
* Use a stabilizer for very fine fabrics.
1. The feed dog is packed with lint.
2. The stitches are too fine.
3. The feed dog was not raised after being lowered.
4. The foot is worn out.
1. The machine is not plugged in.
2. Thread is caught in the hook race.
3. The bobbin winder spindle has not been returned to the left.
1. The stitch is not balanced.
1. The feed dog is packed with lint.
2. Lint has collected in the bobbin holder.
Cause
81
Reference
Page 30
Page 34, 36
Page 16
Page 16
Page 40
Page 40
Page 20
Page 28
Page 74
Replace the bobbin
Page 26
Page 16
Page 16
Page 16
Use proper foot.
Page 40
Page 20
Page 34
Page 20
Page 16
Page 16
Page 20
Page 30
Replace the needle
Page 34
Page 30
Page 20
Make stitch shorter
Page 74
Make stitch longer
Page 52
Replace the foot
Page 6
Page 74
Page 26
Page 72
Page 74
Page 74