Troubleshooting
Condition
Cause
Reference
The needle thread
breaks.
1 . The needle thread is not threaded
properly.
2. The needle thread tension is
too tight.
3. The needle is beni
or blunt.
4. The needle is incorrectly inserted.
5. The needle thread
and
ihe
bobbin thread are not set
properly
under
(drawn
to the rear
o0 the
presser
foot
when sewing is starting.
6. The tabric is not drawn to the rear when
sewing is
finished.
7. The thread is too heavy or too fine for
the needle.
Page 13
Pages 14, 15
Page 6
Page 6
Page
13
Page
19
Page
I
The
bobbin thread
breaks.
1
2
3
The bobbin thread is noi threaded
properly
in the
bobbin holder.
Lint has collected in the bobbin holder.
The bobbin is damaged and doesn't turn
smoothly.
Page
12
Page
41, 42
Change
the bobbin
The needle breaks. 1.
2.
3.
5.
6.
The
needle is incorrectly inserted.
The needle
is bent or blunt.
The needle
clamp screw is loose.
The
needle thrcad tension is too tight.
The fabric is
not drawn to the rear when
sewing
finished.
The needle is
too fine forthe fabric being sewn.
Page
6
Page 6
Page
6
Pages 14,
15
Page I
Skipped stitches 1.
2.
3.
5.
6.
7.
The needle is incorrectly
jnserted.
The needle is bent
or blunt.
The needle and/or threads
are not suitable for the work
Detng sewn.
A blue needle is not
being used for sewing stretch, very
fine fabrics and synthetics.
The needle thread is not threaded
properly.
The
presser
foot
pressure
is not
strong enough.
The wrong needle is used.
Page 6
Page 6
Page
I
Page
9
Page
13
Page
5
Change the needle
Seam
puckering
'1.
The needle thread tension is too tighi.
2. The needle thread is not threaded
properly.
3. The needle is too heavy for the fabric
being Sewn.
4. The stitch length is too long for the fabric.
5. The
presser
foot
pressure
is not correcily
adjusted.
Pages
14, 15
Page
13
Page
I
Make
stitch denser
Page
5
The cloth is not
leeding smoothly.
1
2
3
4
The feed
dog is
packed
with lint.
The
oresser foot orcssurc is too weak.
The
stitches are too fine.
The feed
dog
was
not raised after
"drop
feed" was
used.
Page 42
Page 5
Ivlake stitch
coaser
Page 23
The machine
doesn't work.
1
2
The machine
is not
plugged
in.
Athread is
caught in the hook race.
Push-pull
clutch
is
disengaged.
Page 4
Page 41, 42
Page 11
Patterns
are dis-
torted,
1. The stitch is not balanced. Page
18
Noisy operation 1.
2.
There is thread caught in the hook
€ce.
Lint has built up in the
bobbin holder or hook race.
Page
41,42
Page 41,42
43
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