White 4050 - Lower Tension Adjustment

Page5O
LOWER
TENSION
ADJUSTMENT
If
you
machine
skips
stitches
or ioops
stitches,
it
may
require
a
tension
adjustment.
To
check
the bobbin
tension,
follow
these steps:
i3
Push latches
of the
shuttle
race
cover
to
the outside,
as
shown
in figure
TJ.
®
Remove
shuttle cover
as
shown
in figure
©.
©
Remove
shuttle
as
shown
in
figure
3
®
Suspen
bobbin,
bobbin
case,
and
shuttle
all
together
as illustrated
in
figure
.
When
jerking
the thread
slightly,
all of them
should
slide
down
with
light resis
tance.
If they
do not
slide down
with
a slight
jerk
of the
thread,
the
bobbin
case
tension
is too
tight. If
they
slide
down
too
easily,
the
bobbin
case
tension
is
too
loose.
See
following
page for
adjustment
of
the bobbin
case.
Once
the bobbin
case
is
correctly
adjusted,
it is
easy to
use the upper
ten
sion
to balance
the
stitches
as
shown
on
page 12.
x
Shuttle
y
Bobbin
and
bobbin
case
All
of them
descend
with
lioht
resistance.
English
Espanol
Section
7
©
AJUSTE
DE TENSION
DE
LA BOBINA
Si Ia
máquina
pierde
puntos
o
hace nudos
por
el revés
en
Ia
costura
no
es
problema
de Ia
máquina,
sino de
Ia tensiOn.
Para verificar
Ia
tensiOn
de
Ia
bobina,
se debe
tomar
ésta
y
el cangrejo
como
se
indica en
el
dibujo,
si Ia tensiOn
es
cor
recta
se desplazarán
lenta
mente.
Después
ajustar
Ia
tensiOn
superior
con
los
nümero
4,
5,
o 6.
J
Girar
los seguros
hacia
afuera.
®
Quitar Ia
tapa
del
cangrejo
©
Quitar
el cangrejo.
x
Cancrejo
y
Carrete
y
bobina
El cangrejo
y
Ia bobina
se
desplazarán
lentamente.
30g