TROUBLESHOOTING

Problem

Cause

 

Solution

Page

Skipped stitches

Needle is turned, bent or the point is dull.

Replace the needle.

B-57

 

 

 

 

 

Using improper needle or thread for the

Check the “Fabric/Thread/Needle

B-59

 

selected fabric.

Combination” chart.

 

 

 

 

 

 

Machine is threaded incorrectly.

Check the steps for threading the machine

B-48

 

 

and rethread it correctly.

 

 

 

 

 

 

Dust or lint has collected under the needle

Remove the dust or lint with the brush.

A-19

 

plate.

 

 

 

 

 

 

 

 

Needle is installed incorrectly.

Reinstall the needle correctly.

B-57

 

 

 

 

 

Needle is defective.

Replace the needle.

B-57

 

 

 

 

 

Thin or stretch fabrics are being sewn.

Sew with one sheet of thin paper under the

S-9

 

 

fabric.

 

 

 

 

 

 

Needle breaks

Needle is installed incorrectly.

Reinstall the needle correctly.

B-57

 

 

 

 

 

Needle clamp screw is not tightened.

Tighten the needle clamp screw.

B-57

 

 

 

 

 

Needle is turned or bent.

Replace the needle.

B-57

 

 

 

 

 

Using improper needle or thread for the

Check the needle and fabric combination.

B-58, E-21

 

selected fabric.

 

 

 

 

 

 

 

 

Wrong presser foot was used.

Use the recommended presser foot.

S-67

 

 

 

 

 

Upper thread tension is too strong.

Adjust the thread tension setting.

S-12, E-30

 

 

 

 

 

Fabric is pulled during sewing.

Do not pull the fabric during sewing.

—

 

 

 

 

 

Spool cap is set incorrectly.

Check the method for attaching the spool

B-48

 

 

cap, then reattach the spool cap.

 

 

 

 

 

 

There are scratches around the holes in the

Replace the needle plate, or consult your

A-19

 

needle plate.

authorized dealer.

 

 

 

 

 

 

There are scratches around the hole(s) in the

Replace the presser foot, or consult your

B-55

 

presser foot.

authorized dealer.

 

 

 

 

 

 

There are scratches on the bobbin case.

Replace the bobbin case, or consult your

A-19

 

 

authorized dealer.

 

 

 

 

 

 

Needle is defective.

Replace the needle.

B-57

 

 

 

 

 

Upper threading is incorrect.

Check the steps for threading the machine

B-48

 

 

and rethread the machine.

 

 

 

 

 

 

Bobbin is set incorrectly.

Reset the bobbin thread correctly.

B-45

 

 

 

 

 

Presser foot is attached incorrectly.

Attach the presser foot correctly.

B-55

 

 

 

 

 

Screw of the presser foot holder is loose.

Securely tighten the screw of the presser

B-55

 

 

foot.

 

 

 

 

 

 

 

Fabric is too thick.

Use fabric that the needle can pierce when

S-7

 

 

the handwheel is turned.

 

 

 

 

 

 

Fabric is fed forcefully when sewing thick fabric

Allow the fabric to be fed without being

 

 

or thick seams.

forcefully pushed.

 

 

 

 

 

 

Stitch length is too short.

Adjust the stitch length.

S-10

 

 

 

 

 

Stabilizer is not attached to fabric being

Attach stabilizer.

S-81, E-11

 

embroidered.

 

 

 

 

 

 

 

 

Bobbin thread is incorrectly wound.

Use a correctly wound bobbin.

B-40

 

 

 

 

 

Fabric does not feed

Feed dogs are set in the down position.

Press

, and then turn the handwheel to

S-40

through the machine

 

 

 

 

raise the feed dogs.

 

 

 

 

 

 

Stitches are too close together.

Lengthen the stitch length setting.

S-10

 

 

 

 

 

Wrong presser foot was used.

Use the correct presser foot.

S-67

 

 

 

 

 

Needle is turned, bent or the point is dull.

Replace the needle.

B-57

 

 

 

 

 

Thread is entangled.

Cut the entangled thread and remove it from

A-27

 

 

the race.

 

 

 

 

 

 

Fabric puckers

There is a mistake in the upper or bobbin

Check the steps for threading the machine

B-45, B-48

 

threading.

and rethread it correctly.

 

 

 

 

 

 

Thread tension is set incorrectly.

Adjust the thread tension.

S-12, E-30

 

 

 

 

 

Stitches are too long when sewing thin fabrics.

Shorten the stitch length.

S-10

 

 

 

 

 

Needle is turned, bent or the point is dull.

Replace the needle.

B-57

 

 

 

 

 

Spool cap is set incorrectly.

Check the method for attaching the spool

B-48

 

 

cap, then reattach the spool cap.

 

 

 

 

 

 

Wrong presser foot.

Use the correct presser foot.

S-67

 

 

 

 

 

A

2

Troubleshooting and Maintenance

Appendix A-31