Instruction Manual
18
Use thread cutter (26) to cut thread, shown in the below Fig.
TROUBLESHOOTING GUIDE
Fault
Reason
Correction
Upper
thread breakages
1.
Incorrect threading
2.
Thread is over tensioned
3.
Thread is too thick to the needle
4.
Sewing needle is inserted
incorrectly
5.
Defective bobbin
6.
Damaged needle
1.
Re-threading
2.
Reduce tension
3.
Choose a bigger needle
4.
Remove and reinsert the needle
5.
Replace with a better bobbin
6.
Replace with better needle
Skipped stitch
1.
Sewing needle is inserted
2.
incorrectly;
3.
Damaged needle.
4.
Incorrect size of needle;
5.
Improper cooperation of presser
foot;
6.
Threading didn’t follow
requirement.
1.
Change needle and reinsert
2.
Replace with good needle
3.
Choose a needle appropriate to
thread and texture.
4.
Check and correct presser foot
configuration.
5.
Re-threading according to the
6.
Above correct method.
Needle breakages
1.
Damaged needle
2.
Sewing needle is inserted
incorrectly
3.
Incorrect size of needle (for
texture)
4.
Improper cooperation of presser
foot
5.
Over tension of thread feeding
6.
It is forbidden to pull the fabric
strongly during operation
1.
Replace with good needle
2.
Insert needle correctly (flat part
backwards)
3.
Choose appropriate needle
4.
Install presser foot correctly
5.
Adjust appropriate tension
6.
Do not operate like this
Loose stitch
(looping stitches)
1.
Incorrect threading
2.
Incorrect installation of bobbin
3.
thread bobbin
4.
Unreasonable adjustment of
5.
stitch length
1.
Check threading
2.
Put bobbin correctly
3.
Choose sewing needle with
4.
right specification
5.
Adjust tension