ES-505
2-5
Revised: 04/2016
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TROUBLESHOOTING
Problem
Cause
Solution
Manual
section
Broken thread
Tensioners are too tight.
Adjust correct thread tension.
E 27
Needle is adjusted incorrectly.
Adjust needle correctly.
C 1
Thread for needle too thick.
Use either thinner thread or different
needle size.
E 20
C 1
Needle and loopers setup is incorrect.
Check clearance between needle and
loopers, needle bar height or spreader
setup.
E 13 – E 16
Broken needle, loopers, spreaders or
throat plate.
Change broken parts.
Openings and sewing and thread holes
filthy.
Remove filth and dirt and from openings
and holes.
G 1.1.1.
Thread incorrectly threaded.
Check thread trace.
C 1.3.
C 1.4.
C 1.5.
Thread broken at
the end sewing
Position of upper thread trimming knife
incorrect
Adjust the knife into correct position.
E 17
Skip stitch
Upper thread tension is too big
Adjust correct thread tension.
E 20
Broken, bent or incorrectly installed
needle
Check the needle and replace with new
one if necessary
C 1
G 1.1.2.
Needle and loopers adjustment incorrect
Check adjustment of needle, loopers,
needle bar height or spreaders.
C 1
G 1.1.2.
Incorrect clearance between needle and
needle rest
Adjust correct clearance.
E 15
Broken or cracked spreader springs
Replace springs.
Incorrect adjustment of clamp foot.
Check clap feet overlap against
washers.
E 9
Broken thread
Needle is bent.
Check needle and replace if necessary.
C 1
G 1.1.2.
Incorrect adjustment of clearance
between needle and loopers.
Adjust correct clearance.
E 15
Needle and loopers adjustment is
incorrect.
Check adjustment of needle, loopers,
needle bar height or spreaders.
E 13 - E 16
Incorrect clearance between needle and
needle rest.
Adjust correct clearance.
E 13
Needle is too thin.
Choose suitable needle according to
application sewn.
C 1.1.
Top thread not
trimmed
Top thread trimming knife is not sharp.
Replace knife with new one.
E 18
Top thread trimming knife does not
come back.
Check reverse spring, replace if
necessary.
Incorrect position of top thread trimming
knife.
Adjust knife into correct position.
E 18
Low tension of auxiliary top thread
tensioner.
Increase tension by turning tensioner
clockwise.
E 27
