Operation Manual

Uneven
Stitches
Cause:
Remedy:
ension tegulated
improperly
Adiusl
tension
in
ccCOrOcflce
with
Sections 10
ana
Ii.
Thread
:00
heavy, knotty,
or
stiff.
Use only
rst’cIass
threca.
Bobbin
thread
unevenly
wound.
For
wrnding
do
not
run
the
thread
over
your
finger but
over
the
winder
thread
tens
on.
Race
too
dry.
Aoply one
or
wo
drops
of
oiL
Odd thread
accumulated
between
the
Loosen
tension
and remove
thread.
thread
tension
oiscs.
32
Noisy
Running
Cause:
Remedy:
Lint
or
odd thread
accumulated
in
the
Clean
and
oil
shuttle
as
instructed
in
snuttle
race.
Sections
18
and
19.
Needle
plate
improperly
inserted
after
Unscrew
needle
plate
and,
if
necessary,
removal,
also
feed
dog,
then
readjust.
Feed
aog jams
in
needle
plate
cutout.
Machine
has
run
dry
or was
oiled
with
Clean
and
oil
macnine
as
instructed
kerosene.
in
Sections
18
and
19.
33
inaccurate
Feeding
Cause:
Remedy:
Feed
dog
set
too
ow
so
that
its
teeth
Adjust
position
of
eed
dog
so
that
it
Oo
nor
come
uo
sufficiently
above
snows
a
full
tooth
000ve
me
needle
plate.
needle
ølcte
level.
Lint
cn
huff
accumulated
between
Take
off
needle
plate
and
remove
lint
tooth
rows,
with
a pointed
instrument.
insufficient
amount
of
pressure
exerted
increase
aressure
oy
tightening
screw
V
‘n
material.
iSee
Section
161.
Note:
If
macnine
does
nor
feed
at
all,
see
whether
feed
dog
is
lowered
or
stitch
length
lever
in
zero
position.
34