Stitches are ; There is a high-; pitched noise - Page 75

Brother XL-3750 User's Guide

2014 Dodge Charger SRT Owner Manual

Table of Contents

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APPENDIX / 

ANEXO

 

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74

Stitches are 

skipped.

You have not threaded the upper 

thread properly.

Correct the upper threading.

page 32

You have not used the right combi-

nation of fabric, thread and needle.

Choose a thread and needle that are 

appropriate for the type of fabric.

page 39

The needle is bent or blunt.

Replace the needle.

page 16

You have not inserted the needle 

properly.

Insert the needle properly.

page 16

Dust has accumulated under the 

needle plate or in the bobbin case.

Remove the needle plate cover and 

clean the plate and the bobbin case.

page 70

There is a high-

pitched noise 

while sewing.

Dust has built up in the feed dogs or 

in the bobbin case.

Clean the bobbin case.

page 70

You have not threaded the upper 

thread properly.

Correct the upper threading.

page 32

The bobbin case is scratched.

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 26

The needle 

threader can not 

be used.

You have not moved the needle 

holder to its highest position.

Turn the handwheel toward you 

(counterclockwise) to raise the nee-

dle holder to the highest position.

page 34

You have not inserted the needle 

properly.

Insert the needle properly.

page 17

The stitch is not 

sewn correctly.

The presser foot that you are using is 

not correct for the type of stitch.

Attach the presser foot that is correct 

for the type of stitch that you want to 

sew.

The thread tension is incorrect.

Adjust the tension of the upper 

thread.

page 38

The thread is tangled.

Remove the tangled thread. If the 
thread is tangled in the bobbin case, 
clean the bobbin case.

page 70

The fabric does 

not feed.

The stitch is too fine.

Lengthen the stitch length.

The darning plate is fitted on the 

needle plate.

Remove the darning plate.

You have not used the right combi-

nation of fabric, thread and needle.

Choose a thread and needle that are 

appropriate for the type of fabric.

page 39

The thread is tangled.

Remove the tangled thread. If the 
thread is tangled in the bobbin case, 
clean the bobbin case.

page 70

The sewing light 

bulb does not 

come on.

The sewing light bulb is damaged.

Replace the sewing light bulb.

page 69

Symptom

Possible cause

How to put it right

Reference

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