Troubleshooting

Fault

Cause

Solution

Uneven Stitch Formation

Upper thread too tight or too loose.

  1. Adjust the upper thread tension.

Needle blunt or bent.

  1. Replace the needle, make sure that a new BERNINA quality needle is used.

Poor quality needle.

  1. Use a new BERNINA quality needle.

Poor quality thread.

  1. Use quality thread.

Incorrect needle/thread combination.

  1. Match the needle with the thread size.

Incorrectly threaded.

  1. Rethread the thread.

Fabric has been pulled.

  1. Feed the fabric evenly.

Dust or thread remnants under the tension spring of the bobbin case.

  1. Cleaning the Bobbin Case Cleaning the Bobbin Case.

Skipped Stitches

Incorrect needle.

  1. Use the needle system 130/705H.

Needle blunt or bent.

  1. Replace the needle.

Poor quality needle.

  1. Use a new BERNINA quality needle.

The needle is incorrectly inserted.

  1. Insert the needle with the flat side to the back as far up as it will go into the needle holder and tighten the screw.

Incorrect needle point.

  1. Match the needle point to the texture of the material.

Faulty Stitching

Thread remnants between the thread tension discs.

  1. Fold a piece of thin material and slide the folded edge (not the raw edges) between the thread tension discs.

Incorrectly threaded.

  1. Rethread.

Thread is caught in the hook.

  1. Remove the upper thread and the bobbin case, turn the handwheel backwards and forwards by hand and remove the thread remnants.

Incorrect needle/thread combination.

  1. Check the needle/thread combination.

Upper Thread Breaks

Incorrect needle/thread combination.

  1. Match the needle with the thread size.

Upper thread is too tight.

  1. Reduce the upper thread tension.

Incorrectly threaded.

  1. Rethread.

Poor quality thread.

  1. Use quality thread.

The stitch plate or the hook tip is damaged.

  1. Contact your bernette dealer to have the damages repaired.
  2. Replace the stitch plate.

Lower Thread Breaks

The bobbin is not inserted correctly.

  1. Remove and reinsert the bobbin and pull on the thread.
  2. The thread should run easily.

The bobbin is wound incorrectly.

  1. Check bobbin and thread correctly.

The stitch hole in the stitch plate is damaged.

  1. Contact your bernette dealer to have the damages repaired.
  2. Replace the stitch plate.

Needle blunt or bent.

  1. Replace the needle.

Needle Breaks

The needle is incorrectly inserted.

  1. Insert the needle with the flat side to the back as far up as it will go into the needle holder and tighten the screw.

Fabric has been pulled.

  1. Feed the fabric evenly.

Thick fabric has been pushed.

  1. Use a presser foot that is suitable for thick fabric.
  2. Use the height compensation tool when sewing over a thick seam.

The thread is knotted.

  1. Use quality thread.

The Machine doesn't Start

The machine is switched off.

  1. Switch the machine on.

The machine is not connected to the power supply.

  1. Connect the power plug to the supply.

The machine is defective.

  1. Contact your bernette dealer.

Unfavorable room temperature.

  1. Place the machine in a warm room one hour before use.
  2. Connect the machine and switch it on.

The presser foot is raised.

  1. Lower the presser foot.

Neither the sewing light nor the light on the free arm lights up

The sewing light is defective.

  1. Contact your bernette dealer.