No.
!Jt~
m11It&~~
Problem
Exam
and
Adjustment
5.
IIT~t
A
~.!~CAUTION
Needle
broken
~~~~~~~-~~fi·~~~ti-~-~-~
IJX~U
fi.A~fBI!!
o
In
order to prevent the broken needle sticking in the
material and stab people so please search for broken
needle until the whole of the needle is found.
6.
**
liWi
1'
~~
~u
1.m~t:t:it.t~m~t~llff~~JX:t::;;t;::
.
~~11!2mJffig
Uneven
stitch
~IH±-~
o
The lower needle cause the big thread loop and
make the thread
loop intertwist together.
©~~~mWf:@rum~tr.lijM
o
Reset the needle height by following the standard.
2.~t~~fi~OO:t:~
•
~m~tlli~~~~itHirrn~Wli
~~::f~J!~U
0
The needle plate tongue is too narrow which make
the
needle come close easily and have uneven
stitch.
©J@~Wf~tt&
0
Replace with the new needle plate.
3.m~t~~~t~e~1'~
o
The needle and looper didn't cooperate well.
©~~~~~m~t~~~t~c~ruiiii
o
Adjust the needle and looper position by following
the standard.
7.
*1~/f'SiZ!'i
l
.
JI!~/!!JJ~Ij\
?
Uneven
Seam
The presser foot pressure is too weak?
©~~l!Hll!!t.J
o
Adjust the presser foot pressure.
2
.~~~ii~it.t
0
The feed dog teeth
is
too low.
©~~~~~
~~Mo
Adjust the feed dog teeth height.
8.
*lffi~~Jte
l
l.~iJJ~ffitt$1'~
0
The
fabric
is
puckering
The improper differential fabric feeding ratio.
©iltii'~~
~iJJ~ffif:t$o
Adjust the differential fabric feeding ratio properly.
2
.~~~Qir.lij@;ijij~[l~1'~
0
The improper position
of
feed
dog
teeth.
©~~
~maJ~~~~~r.lijft_t
0
I
According to the standard to adjust the feed
dog
teeth height.
3.M~~t.J~:;;t;::
o
The stitch tension is too strong.
©il~~
~fi*iSNJJo
Adjust the stitch tension properly.
-41-
From the library of: Superior Sewing Machine & Supply LLC
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