1. The bobbin case is not inserted correctly.
A: Remove and reinsert the bobbin case and pull on the thread.
2. The bobbin case is threaded wrong.
A: Check both bobbin and bobbin case if on the correct position.
1. The needle is not inserted correctly.
A: Remove and reinsert the needle (flat side towards the back).
2. The needle is damaged.
A: Insert a new needle.
3. The wrong size needle has been used.
A: Choose a needle to suit the thread.
4. The presser foot is not attached correctly.
A: Check and attach it correctly.
5. The machine is not threaded correctly.
A: Rethread the upper thread.
1. The needle is damaged.
A: Insert a new needle.
2. The needle is not correctly inserted.
A: Insert the needle correctly (flat side towards the back).
3. Wrong needle size for the fabric.
A: Choose a needle to suit the thread and fabric.
4. The wrong presser foot is attached.
A: Select the correct presser foot.
5. The needle clamp screw is loose.
A: Use the screwdriver to tighten the screw.
6. The presser foot is not appropriate for the type of stitch that you sew.
A: Attach appropriate presser foot for the type of stitch that you sew.
7. The upper thread tension too tight.
A: Loosen the upper thread tension.
1. The machine is not correctly threaded.
A: Check the threading and rethread.
2. The bobbin case is not threaded correctly.
A: Thread the bobbin case as illustrated.
3. Thread the bobbin case as illustrated.
A: The needle size must suit the fabric and thread.
4. The thread tension is wrong.
A: Correct the thread tension.
1. The needle is too thick for the fabric.
A: Select a correct needle size.
2. The stitch length is wrong.
A: Adjust the stitch length.
3. The thread tension is too tight.
A: Loosen the thread tension.
1. The needle thread tension is too tight.
A: Loosen the thread tension.
2. The needle thread is not threaded correctly.
A: Rethread the machine.
3. The needle is too heavy for the fabric being sewn.
A: Choose a needle to suit the thread and fabric.
4. The stitch length is too long for the fabric.
A: Adjust the stitch length shorter.
5. Sewing on thin fabric.
A: Sew with a stabilizer material under the fabric.
1. The presser foot is not suited for the stitch.
A: Select the correct foot.
2. The needle thread tension is too tight.
A: Loosen the thread tension.
1. Thread is caught in the hook or the feed dogs are packed with lint.
A: Remove the upper thread and bobbin case, turn the handwheel backwards and forwards and remove the thread remnants.
1. Fluff or oil have collected on the hook or needle bar.
A: Clean the hook and feed dog.
2. The needle is damaged.
A: Insert a new needle.
3. Thread is caught in the hook or the feed dogs are packed with lint.
A: Remove the upper thread and bobbin case, turn the handwheel backwards and forwards and remove the thread remands.
1. Poor quality thread.
A: Select a better quality thread.
2. The bobbin case is threaded uncorrect.
A: Remove the bobbin case and the thread and reinsert them correctly.
3. Fabric has been pulled on.
A: Do not pull on the fabric while sewing, let it be taken up by the machine.
1. The machine is not turned on.
A: Turn on the machine.
2. The presser foot lifter is raised.
A: Lower the presser foot lifter.
3. The machine is not plugged in
A: Connect the power cord to the electric outlet.
