Instruction manual

Page52
7. TROUBLE
CHART
PROBLEM
PROBABLE
CAUSE
CORRECTION
3reaing
lower
thread
Thread
not
wound
evenly
on
he bco.bin
or
not
drawn
uo
correcdy
P.19,
P.7,
8
Lower
thread
:ansion
ao
igh
P.56.
57
Lint
stuck
in
the
bobbin
case
and inside
the tension
spring
Remove
lint
and
dust
with
a
cleaning
brush
3kipng
stitches
Needle
not fully
inserted
or inserted
incorrectly
P22
Needle
bent
or
burred
P.22
Size
or
type
of
needle
and
thread
not
suitable
for
the
material
P.24
Incorrect
upper
threading
P.7
Too much
lubrication
on
the machine
P50
Irregular
stitches
Incorrect
size
of
needle
for
the
material
P24
Upper
thread
tension
too
loose
P.16
incorrect
ower
tension
P.56,
57
Fabric
is
not
fed
Pattern
selection
dial
not
set correctly
P26
correctly
Feed
teeth
are
down
p.48
Lirn
stuck
on
the feed
teeth
P.49
Noisy
machine
Check
for
thread
in
shuttle,
the
slightest
amount
of thread
in
P49
shuttle
may
cause
noise
or
binding,
use
cotton
swab
to
clean.
P58