• SKIP STITCHING (Double
Chain
Stitch)
CHECK POINT
Wrong threading.
l
ADJUSTMENT
Refer to threading diagram.
2 Excessive pressure
of
tension disc. Adjust to proper pressure.
l
3 Wrong position
of
looper thread take-up. Adjust to proper position.
l
* In
case
of
skipping on rightward movement
of
looper.
Large clearance between looper and needle. Adjust to proper position.
2 Wrong position
of
needle guard.
3 Top
of
looper blunt or bent.
Adjust to proper position.
-~""-clearance
- Change
it
for a new one
or
smooth with
oil stone or buff.
~Blunt
u .Flaws
4 Wrong timing
of
double chain stitch looper. - Adjust
to
proper timing.
-35-
Standard specifications 1.5
mm
High-lift specifications 1.3
mm
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