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4. PERFORMANCE CHECKLIST 4. CUADRO DE VERIFICACION DE RENDIMIENTO
GENERAL PROBLEMS
Machine does not sew.
*Foot control is not connected.
-
See page 9.
*Power switch is turned off.
-
Turn on the switch.
Machine jams/knocks.
*Thread is caught in hook.
-
Clean hook (see page 45).
*Needle is damaged.
-
Replace needle (see page 13-14).
Fabric does not move.
*Presser foot is not lowered
-
lower presser foot.
*Stitch length is set at 0.
-
Set it at 1 to 4.
*Feed dog control is lowered (see page 21).
STITCHING PROBLEMS
Machine skips stitches.
*Needle is not all the way up into needle clamp.
-
See page 13-14.
*Needle is bent or blunt.
-
Replace needle (see page 13-14).
*Machine is not threaded correctly.
-
See page 15.
*Thread is caught in hook.
-
Clean hook (see page 45).
Stitches are irregular.
*Needle size is not correct for thread and fabric.
-
See page 13-14.
*Machine is not threaded correctly.
-
See page 15.
*Top thread tension is too loose.
-
See page 19.
*Fabric is being pulled or pushed against machine feeding action.
-
Guide it gently.
*Bobbin has not been wound evenly.
-
Rewind bobbin.
Needle breaks.
*Fabric is being pulled or pushed against machine feeding action.
-
Guide it gently.
*Needle size is not correct for thread and fabric.
-
See page 13-14.
*Needle is not all the way up into the needle clamp (See page 13-14).
THREAD PROBLEMS
Thread bunches.
*Top and bobbin threads are not drawn back under presser foot before starting seam.
-
Draw both threads back under presser foot about 4 inches (10 cm) and hold until a few
stitches are formed.
Needle thread breaks.
*Machine is not threaded correctly.
-
See page 15.
*Top thread tension is too tight.
-
See page 19.
*Needle is bent.
-
Replace needle (see page 13).
*Needle size is not correct for thread and fabric
-
See page 13-14.
Bobbin thread breaks.
*Bobbin case is not threaded correctly. See page 12.
*Lint accumulates in bobbin case or hook.
-
Remove lint (see page 45).
Fabric puckers.
*Top and bobbin thread tensions are too tight.
-
Adjust thread tensions (see page 19).
*Stitch length is too long for sheer or soft fabric.
-
Shorten stitch length.
PROBLEMAS GENERALES
Máquina no cose.
*El cordó eléctrico no está conectado (vea páina 9).
*El interruptor de energía no está conectado.
-
Ponerio en la posición LOW o HIGH.
Máquina se atasca/rechina
*El hilo está enredado en la lanzadera.
-
Limpiar la lanzadera (vea página 45).
*La aguja se rompe.
-
Reponer la aguja (vea página 13-14).
La tela no se mueve.
*El prensatelas no está bajado perfectamente.
-
Bajar el prensatelas.
*Longitud del punto es demasiado corto.
-
Prolonger la longitud del punto.
*La placa de cubierta de transportador se instala.
-
Quitar la placa de cubierta de
transportador.
*Control del alimentador se baja (vea página 21).
PROBLEMAS DE PUNTO
La máquina salta puntos.
*La aguja no está fijada en la brida portaagujas (vea página 13-14).
*La aguja está torcida o obtusa.
-
Reponer la aguja (vea página 13-14).
*La máquina no enhebra correctamente (vea página 15).
Puntos son irregulares.
*El número de la aguja no es correcto para el hilo ni el material (vea página 13-14).
*La máquina no enhebra correctamente (vea página 15).
*La tensión del hilo superior es demasiado floja (vea página 19).
*El material está tirado o empujado contra la acción de alimentación.
-
Guiario suavemente.
*La bobina no se ha devanado de un modo igual.
-
Redevanar la bobina.
La aguja se remope.
*El material está tirado o empujado contra el acción de alimentación.
*El número de la aguja no es correcto para el hilo ni el material (vea página 13-14).
*La aguja no está fijada en la brida portaagujas (vea página 13-14).
PROBLEMAS DE HILO
Los hilos se juntan
*Los hilos superior e inferior no están sacados debajo del prensatelas antes de empezar
a coser,
-
Sacar ambos hilo debajo del prensatelas unos 10 cm y mantener hasta que se
formen unos pocos puntos.
La aguja se remope.
*La máquina no enhebra correctamente (vea página 15).
*La tensión del hilo superior es demasiado apretada (vea página 19).
*La aguja está torcida.
-
Cambiar la agja (vea página 13-14).
*El número de la aguja no es correcto para el hilo ni el material (vea página 13-14).
El hilo inferior se rompe.
*La cápsula de portacanilla no enhebra correctamente (vea página 12).
*Las hilas se acumulan en la cápsula o en la lanzadera.
-
Quitarias (vea página 45).
La tela no queda plana.
*Las tensiones del hilo superior e inferior están demasiado apretadas.
-
Ajustar las tensiones del hilo (vea página 19).
*La longitud del punto es demasiado largo para material fino o suave
-
Acortar la longitud
del punto.
ENGLISH ESPAÑOL
48


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