TROUBLE SHOOTING GUIDE

Before calling for service, check the following items. If the problem still persists, contact Singer at www.singer.com

Problem

Cause

 

Correction

Reference

 

 

 

 

 

1.The machine is not threaded correctly.

1.Rethread the machine.

Page 13

 

 

 

 

 

2.The thread tension is too tight.

2.Reduce the thread tension (lower

Page 19

 

 

number).

 

 

Upper thread

3.The thread is too thick for the needle.

3.Select a larger needle.

Page 22

 

 

 

 

4.The needle is not inserted correctly.

4.Remove

and reinsert the needle (flat

Page 23

breaks

 

side towards the back).

 

 

 

 

 

 

 

 

 

5.The thread is wound around the spool

5.Remove the spool holder and unwind

Page 13

 

holder pin.

the thread from the spool holder pin.

 

 

 

 

 

 

6.The needle is damaged.

6.Replace the needle.

Page 23

 

 

 

 

 

 

1.The bobbin case is not inserted correctly.

1.Remove

and reinsert the bobbin case

Page 12

Lower thread

 

and pull

on the thread. The thread

 

 

should pull easily.

 

breaks

 

 

 

 

 

 

 

2.The bobbin case is threaded wrong.

2.Check both bobbin and bobbin case.

Page 12

 

 

 

 

 

1.The needle is not inserted correctly.

1.Remove and reinsert needle(flat side

Page 23

 

 

towards the back).

 

 

2.The needle is damaged.

2.Insert a new needle.

Page 23

 

 

 

 

Skipped

3.The wrong size needle has been used.

3.Choose a needle to suit the thread.

Page 22

 

 

 

 

stitches

4.The foot is not attached correctly.

4.Check and attach correctly.

Page 20

 

 

 

 

 

5.The machine is not threaded correctly.

5.Rethread the machine.

Page 13

 

 

 

 

 

1.The needle is damaged.

1.Insert a new needle.

Page 23

 

 

 

 

 

2.The needle is not correctly inserted.

2.Insert the needle correctly (flat side

Page 23

 

 

towards the back).

 

 

3.Wrong needle size for the fabric.

3.Choose a needle to suit the thread and

Page 22

 

 

fabric.

 

 

 

 

 

 

Needle breaks

4.The wrong foot is attached.

4.Select the correct foot.

Page 77

 

 

 

 

 

5.The needle clamp screw is loose.

5.Use the screwdriver to firmly tighten the

Page 23

 

 

screw.

 

 

 

6.The presser foot that is used is not

6.Attach the presser foot that is appro-

Page 77

 

appropriate for the type of stitch that

priate for the type of stitch that you wish

 

 

you wish to sew.

to sew.

 

 

 

7.The upper thread tension is too tight.

7.Loosen the upper thread tension.

Page 19

 

 

 

 

 

1.The machine is not correctly threaded.

1.Check the threading.

Page 13

 

 

 

 

 

2.The bobbin case is not correctly

2.Thread the bobbin case as illustrated.

Page 12

Loose stitches

threaded.

 

 

 

3.Needle/fabric/thread combination is

3.The needle size must suit the fabric and

Page 22

 

 

wrong.

thread.

 

 

 

 

 

 

 

4.Thread tension is wrong.

4.Correct the thread tension.

Page 19

 

 

 

 

Seam

1.The needle is too thick for the fabric.

1.Select a finer needle.

Page 22

 

 

 

 

gather or

2.The stitch length is adjusted wrong.

2.Readjust the stitch length.

Page 28

pucker

 

 

 

 

3.The thread tension is too tight.

3.Loosen the thread tension.

Page 19

 

 

 

 

 

 

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Singer H74 instruction manual Trouble Shooting Guide, Problem Cause Correction