No.
~~
m~&~~
Problem
Exam
and
Adjustment
5.
IT£t
7.
~?J:!t:JJ~Ij\
'~ffi:ff.&
o
Needle
broken
The presser foot pressure
is
small or the fabric
feeding is improper.
© tt
no~
!il II! n .
fiE~
ffi
IE
m o
Increase the presser foot pressure to adjust the
fabric feeding
properly.
a.
~~t~mjtffi~
o
The looper contact the needle.
©
~~~Wr!J~~~twm~
taz~
o
Adjust the position of needle and looper according
to the standard.
9.
_r~jtWmjtffi~jM
o
The up looper contact the needle.
©~~~Wr!J~k~j
twm~taz~r
o
Adjust the position of the upper looper and needle
according to the standard.
1o.m~tw~~th"lc~1'
..
o
The needle and needle guard plate didn't
cooperate
well.
©~~~~~mj
t!fiHI~t
h"llilf o
Adjust the position of the needle and needle guard
plate according to the standard.
11.~~t~ftH
0
The looper
tip
is blunt.
©~~~~t
0
Replace the looper.
12.jt~W~t~E~I!t~~7\:
'fiEm~tWjtf~EIC~
~j}Jo
The needle lever and needle lever sleeve
is
worn
out so the
needle and needle sleeve become loose.
©~~~H~9JG~t~E
fql
o
Replace the needle rod or needle rod sleeve.
13.~t~L~~t~:;t:Jj\
o
The needle hole on the needle plate is too small.
©~~'J\5ift
m~t9JG~~~~t~~7\:~t~
o
Replace the smaller needle
or
the needle plate with
bigger
needle hole.
14J!f!1=~111~7\:
0
The parts is over-loosing.
©~•s
~m2~~aw•~~~·~~~~~~e
aRn·~~-~~mM~~B~~o
Check cooperation and wear condition among the
mechanism and adjust the size according
to
the
standard.
Replace the part which is worn out
seriously.
-40-
From the library of: Superior Sewing Machine & Supply LLC
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