• WRONG CHAINING-OFF (Double
Chain
Stitch)
CHECK POINT
ADJUSTMENT
PAGE
1
Wrong threading.
-
Refer to threading diagram.
!
2
Excessive pressure
of
tension disc.
-
Adjust to proper pressure.
31
l
3
Too weak pressure
of
tension disc.
-
Adjust
to
proper pressure.
!
4 Wrong position
of
needle thread guide.
-
Adjust to proper position.
16
l
5
Wrong position
of
looper thread take-up.
-
Adjust to proper position.
25
!
6
Wrong installment
of
main feed dog and
-
Adjust installment with the same level.
24
differential feed dog.
l
7
Wrong position
of
main feed dog.
-
Adjust needle plate in light toutch with
24
main feed dog.
8 Existance
of
clearance on the pressing pari
-
Change
it
for a new one.
for chaining
off
of
presser foot.
~
~
9 Wrong timing between needle and looper.
-
Adjust to proper timing.
21
1ZJ
EXCESSIVE WRINKLES
CHECK POINT ADJUSTMENT
PAGE
1 Excessive pressure
of
tension disc.
-
Adjust
to
proper ·pressure.
28
!
2
Needle size too big.
-
Change it for a proper one suitable to
j
needle and materials.
3 Wrong differential ratio.
-
Adjust to proper ratio.
27
!
4 Bight too wide.
-
Adjust to proper bight.
!
5
Knives are not sharp.
-
Change it for a new one or reglind.
22
(In case
of
engagement
of
upper and lower
knife
is
wrong, adjust engagement
of
these.)
[S]
SLIPAGE OF CLOTH
CHECK POINT
ADJUSTMENT
PAGE
1
Excessive pressure
of
pressure foot.
-
Adjust to proper pressure.
!
2
Knives are not sharp.
-
Change it for a new one
or
reglind.
22
l
(In
case
of
engagement
of
upper and lower
knife
is
wrong, adjust engagement
of
these.)
3 Feed dog too high.
-
Adjust
to
lower level than standard level.
24
-37-
To Next Page
Loading...
