TROUBLESHOOTING

List of Symptoms

If you have a minor problem with your sewing machine, check the following solutions. If the solutions

suggested do not correct the problem, contact your authorized dealer. Press → →

for advice about minor sewing problems during sewing. Press at any time to return to the original screen.

Problem

Cause

Solution

Page

The thread is tangled

Upper threading is incorrect.

Check the steps for threading the machine

57

on the wrong side of

 

and rethread the machine.

 

the fabric.

 

 

 

Using improper needle or thread for the

Check the “Fabric/Thread/Needle

69

 

 

selected fabric.

Combinations” chart.

 

 

 

 

 

The upper thread is

The bobbin thread is incorrectly installed.

Correctly install the bobbin thread.

54

too tight.

 

 

 

 

 

 

 

Cannot thread the

Needle is not in the correct position.

Press the “Needle Position” button to raise the

15

needle

 

needle.

 

 

 

 

 

 

Needle is installed incorrectly.

Reinstall the needle correctly.

67

 

 

 

 

 

Needle is turned, bent or the point is dull.

Replace the needle.

67

 

 

 

 

Cannot lower the

Presser foot was raised using the “Presser Foot

Press the “Presser Foot Lifter” button to lower

15

presser foot with the

Lifter” button.

the presser foot.

 

presser foot lever

 

 

 

 

 

 

 

Thread tension is

Upper threading is incorrect.

Check the steps for threading the machine

57

incorrect

 

and rethread the machine.

 

 

 

 

 

 

Bobbin is set incorrectly.

Reset the bobbin. (If needle plate was

54

 

 

removed, reinstall needle plate and tighten

 

 

 

screws prior to installing bobbin case.)

 

 

 

 

 

 

Using improper needle or thread for the

Check the “Fabric/Thread/Needle

69

 

selected fabric.

Combination” chart.

 

 

 

 

 

 

Presser foot holder is not attached correctly.

Reattach the presser foot holder correctly.

66

 

 

 

 

 

Thread tension is set incorrectly.

Adjust the thread tension.

79, 233

 

 

 

 

 

Bobbin thread is incorrectly wound.

Use a correctly wound bobbin.

48

 

 

 

 

 

Needle is turned, bent or the point is dull.

Replace the needle.

67

 

 

 

 

Upper thread breaks

Machine is not threaded correctly (used the

Rethread the machine correctly.

57

 

wrong spool cap, spool cap is loose, the thread

 

 

 

did not catch the needle bar threader, etc.)

 

 

 

 

 

 

 

Needle is turned, bent or the point is dull.

Replace the needle.

67

 

 

 

 

 

There are scratches on the race.

Replace the race, or consult your authorized

338

 

 

dealer.

 

 

 

 

 

 

Upper thread tension is too strong.

Adjust the thread tension.

79, 233

 

 

 

 

 

Using improper needle or thread for the

Check the “Fabric/Thread/Needle

69

 

selected fabric.

Combinations” chart.

 

 

 

 

 

 

Thread is twisted.

Use scissors, etc., to cut the twisted thread

—

 

 

and remove it from the race, etc.

 

 

 

 

 

 

There are scratches near the hole of the needle

Replace the needle plate, or consult your

97

 

plate.

authorized dealer.

 

 

 

 

 

 

There are scratches near the hole in the presser

Replace the presser foot, or consult your

65

 

foot.

authorized dealer.

 

 

 

 

 

 

Needle is installed incorrectly.

Reinstall the needle correctly.

67

 

 

 

 

 

Thread is knotted or tangled.

Rethread upper and lower thread.

54, 57

 

 

 

 

 

A bobbin designed specifically for this machine

Incorrect bobbins will not work properly. Only

54

 

is not used.

use a bobbin designed specifically for this

 

 

 

machine.

 

 

 

 

 

Bobbin thread breaks

Bobbin is set incorrectly.

Reset the bobbin thread correctly.

54

 

 

 

 

 

There are scratches on the bobbin or it doesn’t

Replace the bobbin.

54

 

rotate properly.

 

 

 

 

 

 

 

Thread is twisted.

Use scissors, etc. to cut the twisted thread

—

 

 

and remove it from the race, etc.

 

 

 

 

 

 

A bobbin designed specifically for this machine

Incorrect bobbins will not work properly. Only

54

 

is not used.

use a bobbin designed specifically for this

 

 

 

machine.

 

 

 

 

 

350