Siruba C007K Instruction Book page 44

No.
l~~
m~J5Hffll~
Problem
Exam and Adjustment
4.
Iii**
6.M~t, ~~t, ~t~, ~~i!i:, ~~~~~~~~
Thread broken
~~9.X~~U~I~~ o
The needle, looper, needle plate, presser foot
tongue and thread crossing hole is blunt or
scratching.
©ffl~E9.X~WM~M&e·9.X~~-~~o
Use oilstone or fine emerypaper to polish or
replace the parts.
7.*i~MU~ffi~~~*i~I~~
o
Sewing the heavy material cause the thread
winding.
©~~MUMM·~mW~~~~&~g~~Mo
Decelerate the sewing rotational speed and
applying silicon oil to lower the friction temperature
between needle and thread.
5.
II1T
IDt
1 .
m ~t B' S J 5~H~ 1' !1
°
Needle broken Choose the wrong needle.
©ffffi~:lf'M~~~B'Slm~~·@fflm-~B'SJM~o
Use thick needle within the range that there will be
no pinhole occurred on the fabric.
2 .~~~!&:~!'~
0
Improper assembling of the presser foot.
©~!&~®E@fflM~~~m~~m~~~~o
During assembly, make sure the needle can insert
to the central point of the presser foot.
3.~~~!&r§Jf~fi1~1'!1
°
The assembling height of feed dog is wrong.
©~~~~B'Slr§JM • ~~r§J~~t~O.B-1
mm •
[q]Bey
f~iH~~=~~~J.J
o
Adjust the feed dog height to make the feed teeth
in
0.8-1
mm higher that the needle plate and keep
the appropriate presser foot pressure.
4.
U~/1'~ o
Bad threading
o
©U~~M~~-~m~~~-·~--~ 0
If there is any connecting part of the thread, it
needs to be dealt first. Then, threading.
s. m~t~~:lf'IE~
0
Improper needle installing.
©~~OO~IE~~~S~·mB~~o
Install the needle correctly by following the
instruction book.
6 .m
~t~
s:E
9.X~t~ Iii~~~ 9.X~t ~ fBlm 11
°
The needle is bent, the needle tip broken, or the
needle hole is blocked.
©~~m~t
0
Replace the needle.
-39-