13]
SKIP STITCHING (Overlock Stitch)
CHECK POINT
ADJUSTMENT
PAGE
1 Wrong threading.
-
Refer
to
threading diagram.
l
2
Excessive pressure
of
tension disc.
-
Adjust to proper pressure.
28
l
*
In case skipping between over looper and needle.
1
Wrong position
of
looper thread take-up.
-
Adjust
to
proper position.
24
l
2
Little movement into the left
of
over looper.
-
Adjust the position
of
over looper for proper
19
I
movement.
3
Large clearance between needle and over looper. -
Adjust over looper and under looper for
18.
19
I
proper clearance between needle and over
looper.
4
Incorrect height
of
needle bar.
-
Adjust
to
proper height.
17
l
* In case
of
skipping between over looper and under looper.
1
Large clearance between under looper and over -
Adjust
to
proper clearance.
20
looper.
l
2
Top
of
over looper blunt or bent.
-
Chnange it for a new one or smooth with
19
oil stone or buff.
Blunt~
* In case
of
skipping between under looper and needle.
1
Large clearance between under looper and needle. -
Adjust
to
proper clearance.
18
l
2
Top
of
under looper blunt
or
bent.
-
Change it for a new one or smooth with oil
18
stone or buff.
~
Blunt
~·
Flaws
3
Incorrect height
of
needle bar.
-
Adjust
to
proper height.
17
l
4
Wrong timing
of
under looper.
-
Adjust to proper timing.
18
-34-
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