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Frequent skip stitching
happens.
Trimming is not
functioned.
Needle thread is pulled
from needle hole after
trimming
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 and fixed knife
position is not proper.
Knife engaging presser is not
proper.
Skip stitching happens in
trimming.
Setting of trimming timing is
not proper
Trimming setting is off.
Thread release timing is not
proper.
Threading way of the needle
thread is not proper.
Pre-tensioner spring is too
tight. (Thread tail is short.)
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.
Adjust movable and fixed knife
position.
Adjust the knife engaging
presser.
Refer to the condition
"Frequent skip stitching
happens".
Adjust the trimming timing.
Turn trimming setting on.
Adjust the thread release
timing.
Thread the needle thread
properly.
Adjust the intensity of the
pre-tensioner spring.
- 59 -
6-2
6-2
5-2
5-2
6-6
6-6
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7-5-2.7
7-5-2.7
-
Operation
panel
section
Operation
panel
section
Operation
panel
section
5-3
6-9
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