Necchi FA16, Instruction Manual

Page: 34 / 36

32
Troubleshooting
Problem
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.
The buttonhole is not
sewn well.
Noisy operation.
Cause
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 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 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 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 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.
1. The machine is not plugged in.
2. Thread is caught in the hook race.
3. The bobbin winder spindle is in the bobbin winding position.
1. The stitch is not balanced.
1. The stitch density is not suitable for the fabric being sewn.
2. Interfacing is not being used with stretch fabrics.
1. The feed dog is packed with lint.
2. Lint has collected in the bobbin holder.
Reference
See page 11.
See page 14.
See page 7.
See page 7.
See page 15.
See page 15.
See page 7.
See page 10
See page 30
Replace the bobbin.
Re-wind the bobbin.
See page 7.
See page 7.
See page 7.
Use proper foot.
See page 15.
See page 7.
See page 14.
See page 7.
See page 7.
See page 7.
See page 7.
See page 11.
Replace the needle.
See page 14.
See page 11.
See page 7.
Make stitch shorter.
See page 30.
Make stitch longer.
See page 5.
See page 4.
See page 30.
See page
9.
See page 13.
See page 21.
Use an interfacing.
See page 30.
See page 30.