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Frequent skip stitching
happens.
Trimming is not
functioned.
Stitch forming is loose.
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
Clearance between needle
and hook is too big.
Timing of needle and hook is
not proper.
Needle is bent.
Needle is at wrong position.
Presser foot position is not
proper.
Presser foot up and down
timing is not proper.
Fixed knife is dull.
Movable knife is dull.
Movable knife home position is
not proper.
Setting of trimming timing is
not proper
Trimming setting is off.
Upper thread tension is too
loose.
Bobbin thread tension is too
loose.
Strength of thread take up
spring is inadequate.
Presser foot position is not
proper.
- 48 -
Adjust clearance between
needle and hook properly.
Adjust position of needle and
hook properly.
Change needle.
Fix position properly.
Adjust presser foot position.
Adjust presser foot up and
down properly.
Sharpen fixed knife or change
fixed knife.
Sharpen Movable knife or
change fixed knife.
Adjust movable knife home
position.
Adjust the trimming timing.
Turn trimming setting on.
Adjust upper thread tension.
Adjust bobbin thread tension.
Adjust strength of thread take
up spring.
Adjust presser foot position
properly.
6-2-1
6-2-3
5-1
5-1
6-5
6-5
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-
7-5-1
Operation
panel
section
Operation
panel
section
5-10
5-9
6-6-2
6-5
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