P-14
TWIN NEEDLE INSTRUCTIONS
1. Set the stitch selector dial to stitches”1,2,or 3”
2. Insert the twin needle in the same way as a single needle.
3. Follow instructions for single needle threading .To thread the left needle ,pass the thread through the
left side of the needle clamp screw. To thread the right needle , pass the thread form the right side of
the needle clamp screw.
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
incorrectly;
2.Damaged needle.
3.Incorrect size of needle;
4.Improper cooperation of presser
foot;
5.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
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;
7.Threading
didn’t
follow
requirement.
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;
7.Re-threading according to the above
correct method.
Loose stitch
(looping
stitches)
1.Incorrect threading;
2.Incorrect installation of bobbin
thread bobbin;
3.Unreasonable adjustment of
stitch length;
1.Check threading;
2.Put bobbin correctly;
3.Choose sewing needle with
right specification;
4. Adjust tension;
