SINGER W1999 - Manual (Page 64)

Page 56
Section
7
English
LOWER TENSIION
If you machine skips stitches or
loops stitches, it may require a
tension adjustment. To check the
bobbin
tension, foiiow these
steps:
© Push latches of the shuttle
race cover to the outside, as
shown in figure ®.
©Remove shuttle cover as
shown in figure (g).
@ Remove shuttle as shown in
figure d).
©Suspend 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 ten­
sion is too loose.
See following page for adjust­
ment of the bobbin case.
Once the bobbin case is cor­
rectly adjusted, it is easy to
use the upper tension to bal­
ance the stitches as shown
on page 16.
X Shuttle
y Bobbin and bobbin case
All of them descend with
light resistance.
Espam>l
AJUSTE DE TENSION DE
LA BOBINA
Si la máquina pierde puntos o
hace nudos por el revés en la
costura no es problema de la
máquina, sino de la tensión.
Para verificar la tensión de la
bobina, se debe tomar ésta y
el cangrejo como se indica en
el dibujo, si la tensión es cor­
recta se desplazarán lenta­
mente.
Después ajustar la tensión
superior con los número 4, 5,
o 6.
® Girar los seguros hacia
afuera.
® Quitar la tapa del cangrejo
® Quitar el cangrejo.
@ X Cancrejo
y Carrete y bobina
El cangrejo y la bobina se
desplazarán lentamente.