The upper ; The lower ; thread is tangled - Page 75

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4

The upper 
thread breaks.

You have not inserted the needle 

properly.

Insert the needle properly.

page 22

The area around the hole in the nee-

dle plate is scratched.

Replace the needle plate.

Contact your retailer or the nearest 

authorized service center.

–

The area around the hole in the 

presser foot is scratched.

Replace the presser foot.

Contact your retailer or the nearest 

authorized service center.

–

The bobbin case is scratched, or has 

a burr on it.

Replace the bobbin case.

Contact your retailer or the nearest 

authorized service center.

–

You have not used a bobbin that has 

been designed for this machine.

Incorrect bobbins will not work

properly. Only use a bobbin that has 

been designed for this machine.

page 12

The lower 

thread is tangled 

or breaks.

You have not wound the bobbin 

thread properly.

Wind the bobbin thread properly.

page 12

The bobbin is scratched or does not 

turn smoothly.

Replace the bobbin.

–

The thread is tangled.

Remove the tangled thread and 

clean the bobbin case.

page 70

You have not used a bobbin that has 

been designed for this machine.

Incorrect bobbins will not work 

properly. Only use a bobbin that has 

been designed for this machine.

page 12

Bobbin is set incorrectly.

Reset the bobbin thread correctly.

page 15, 16

The thread is 
tangled on the 
wrong side of 
the fabric.

The upper thread was not threaded 
correctly.

Correct the upper threading.

page 17

The thread 

tension is 

incorrect.

You have not threaded the upper 

thread properly.

Correct the upper threading.

page 17

You have not wound the bobbin 

thread properly.

Wind the bobbin thread properly.

page 12

You have not threaded the right 

combination of thread and needle 

for the fabric you are using.

Choose a thread and needle that are 

appropriate for the type of fabric. 

page 21

You have not attached the presser 

foot holder properly.

Attach the presser foot holder 

properly.

page 26

The thread tension is incorrect.

Adjust the tension of the upper 

thread.

page 31

You have not used a bobbin that has 

been designed for this machine.

Incorrect bobbins will not work

properly. Only use a bobbin that has 

been designed for this machine.

page 12

Bobbin is set incorrectly.

Reset the bobbin thread correctly.

page 15, 16

The upper 
thread is too 
tight.

The bobbin thread is incorrectly 

installed.

Correctly install the bobbin thread.

page 15

The fabric is 

wrinkled.

You have not threaded the upper thread 

properly or fitted the bobbin properly.

Thread the upper thread and wind 

the bobbin thread properly.

page 15, 16, 17

You have not fitted the spool properly. Fit the spool properly.

–

You have not used the right combina-

tion of fabric, thread and needle.

Choose a thread and needle that are 

appropriate for the type of fabric.

page 21

The needle is bent or blunt.

Replace the needle.

page 22

Symptom

Possible cause

How to put it right

Reference