Advertisement
PROBLEM
Irr
egular
Stitches
Break ing
Need
les
Bunc hing of
Thr
e
a
d
Pucke
r
1ng
WHAT
PROBAB
LE
C
AU
SE
Incor
rect size
need
le.
Improper threading
.
loose upper
thread tension.
Pu
lling
fabric.
Light pressure
on presser foot.
Loose
presser foot.
Unevenly
wound
bobbin
Pulling
fabric
.
Incorrect size needle.
Incorrect setting of
needle
.
Loose presser foot.
TO
Upper
end lower threads not
drown
bock under presser foot.
Feed dog down.
Incorrect thread tension
( s)
.
Light pressure
on presser loot.
Using two different
sizes or
kinds of thread.
Bent
o
r
blunt need
le
.
Loose presser
foot.
Fabric too
sheer
o
r
too
sof
t.
30
DO
CO
RRECTION
Choose
correct size
need
le
for thread and fabric
(
page 5
).
Rethreod
machine
(
page
9).
Tighten upper thread tension
(
page
12).
Do not pu
ll
fabric;
guide
it
gently.
Increase pressure
on
presser
foot
(
page 1
0
).
Reset
presser
loot
(
page
15).
Rewind bobbin
(
page
7
).
Do
not pull fabric; guide il gently.
Choose correct size
needle
for thread and fabric
(
page 5
)
.
Reset needle
(
page 5
).
Reset presse
r
foot
(
page
15).
Draw
both
threads
bock under presser foot
(
page
1
0
)
.
Raise feed
dog
(
page 15
)
.
Reset thread tension
( s) (
page 12,
13).
Increase pressure
on
presser foot
(
page 1
0
)
.
Upper th read and bobbm th read
sho
ul
d be
some
SIZe a nd kmd
Insert new need
le
(
page
5).
Reset presser loot
(
page 15
).
Use underlay o
f
tissue paper
or
to
rl
eton when
st
itc hing
.
Advertisement
