89
Problem
Cause
Correction
Reference
Upper thr
ead br
eaks
•
The machine is not threaded correctly.
–
Rethread the machine.
12
•
The thread tension is too tight.
–
Reduce the thread tension. (Lower
number).
16
•
The thread is too thick for the needle.
–
Select a larger needle.
19
•
The needle is not inserted correctly.
–
Remove and reinsert the needle (flat
side towards the back).
15
•
The thread is wound around the spool
pin.
–
Remove the spool and wind thread
onto spool.
12
•
The needle is damaged.
–
Replace the needle.
15
Lower thr
ead
br
eaks
•
The bobbin case is not inserted cor-
rectly.
–
Remove and reinsert the bobbin case
and pull on the thread. The thread
should run easily.
11
•
The bobbin case is threaded incor-
rectly.
–
Check both bobbin and bobbin case.
11
Skipped stitches
•
The needle is not inserted correctly.
–
Remove and reinsert needle (flat side
towards the back).
15
•
The needle is damaged.
–
Insert a new needle.
15
•
The wrong size needle has been used.
–
Choose a needle to suit the thread.
19/20
•
The foot is not attached correctly.
–
Check and attach correctly.
92-97
•
The machine is not threaded correctly.
–
Rethread the machine.
12
•
The presser foot pressure is not strong
enough.
–
Adjust the presser foot pressure.
17
Trouble Shooting
Problem
Cause
Correction
Reference
Needle br
eaks
•
The needle is damaged.
–
Insert a new needle.
15
•
The needle is not correctly inserted.
–
Insert the needle correctly (flat side
towards the back).
15
•
Wrong needle size for the fabric.
–
Choose a needle to suit the thread
and fabric.
19/20
•
The wrong foot is attached.
–
Select the correct foot.
21
•
The needle clamp screw is loose.
–
Use the screwdriver to tighten the
screw firmly.
15
•
The presser foot which is attached is
not appropriate for the selected type of
stitch pattern.
–
Attach the presser foot that is appro-
priate for the selected type of stitch.
21
•
The upper thread tension is too tight.
–
Loosen the upper thread tension.
16
Loose stitches
•
The machine is not correctly threaded.
–
Check the threading.
12
•
The bobbin case is not correctly
threaded.
–
Thread the bobbin case as illustrated.
11
•
Needle/fabric/thread combination is
wrong.
–
The needle size must suit the fabric
and thread.
19/20
•
Thread tension is wrong.
–
Correct the thread tension.
16
Seam gathers or
puckers
•
The needle is too thick for the fabric.
–
Select a finer needle.
19/20
•
The stitch length is adjusted incor-
rectly.
–
Readjust the stitch length.
29
•
The thread tension is too tight.
–
Loosen the thread tension.
16