123
Case Cause (Reason) Solution
Refer-
ence
page
● The needle threading
lever will not return to
the original position and
the machine can not
turn properly.
(This is in case the
hook of needle threader
remains in the needles
eye.)
● Hand wheel is turned by mistake
while the needle threading lever is
in down position. (in the process of
threading to the needle.)
● Turn hand wheel slightly away
from you. (to the opposite side
when sewing).
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● The machine will not
start even when start/
stop button is pressed.
● The foot controller is plugged in. ● Start/stop button can function
when foot controller is removed.
16
● Thread breaks.
● Stitch is skipped.
● The machine is incorrectly threaded.
● There is knot or knurl on the thread.
● Thread tension is not adjusted ap-
propriately.
● The needle is bent or the tip of nee-
dle is broken.
● The needle is installed incorrectly.
● Threading of bobbin thread is not
correct.
● The bobbin can not turn smoothly
inside the hook holder.
● The needle size does not match the
thread.
● Thread take-up is not threaded.
● Rethread the machine correctly.
● Remove knot or knurl from thread.
● Adjust thread tension manually
according to fabrics and thread to
be used.
● Change needle.
● Install needle correctly.
● Check the correct way of setting
bobbin thread.
● Check the correct way of winding
bobbin thread.
● Check the combination of thread
and needle.
● Rethread the machine correctly.
32
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36
25
25
29
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26
33
● Thread tension is not
good.
● The needle thread is threaded in
correctly.
● The bobbin thread is threaded
incorrectly.
● The direction of spool cap doesn’t
match the spool.
● Rethread the machine correctly.
● Check the correct way of setting
bobbin thread.
● Attach the spool cap in a correct
direction.
32
29
32
● Puckering occurs. ● The stitch length is too large on
lightweight fabrics.
● The needle tip is broken.
● Make the stitch length smaller
(shorter).
● Change needle.
44
25
●
sign is shown on
the LCD display.
● Safety mechanism works when
machine stops due to motor lock.
Or, when the voltage fault has
occurred.
● The safety mechanism will be
reset in a short while and the
machine will return to normal.
(At this time, the start/stop button
will not light up.)
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