Brother Sl7 Manual

SL-777B
10. STANDARD ADJUSTMENTS
10. STANDARDEINSTELLUNGEN
10. REGLAGES STANDARD
10. AJUSTES ESTANDARES
34
10. STANDARD ADJUSTMENTS
10. STANDARDEINSTELLUNGEN
 CAUTION/ACHTUNG/ATTENTION
¡Maintenance and inspection of the sewing
machine should only be carried out by quali-
fied personnel.
¡Ask your Brother dealer or a qualified electri-
cian to carry out any maintenance and inspec-
tion of the electrical system.
¡If any safety devices have been removed, be
absolutely sure to re-install them to their...

SL-777B
10. STANDARD ADJUSTMENTS
10. STANDARDEINSTELLUNGEN
10. REGLAGES STANDARD
10. AJUSTES ESTANDARES
35
 ATENCION
¡El mantenimiento y la inspección de la máquina
debe ser realizado sólo por personal
especializado.
¡Consultar a su distribuidor Brother o un
electricista calificado por cualquier trabajo de
mantenimiento e inspección eléctrica que se
debiera realizar.
¡Si se hubieran desmontado alguno de los
dispositivos de seguridad, asegurarse de volver
a instalarlos a su posición original y verificar...

SL-777B
10. STANDARD ADJUSTMENTS
10. STANDARDEINSTELLUNGEN
10. REGLAGES STANDARD
10. AJUSTES ESTANDARES
36
■ Thread tension spring tension
The standard tension of the thread tension spring q is 0.25
- 0.34 N.
1. Push the needle thread with your finger until it is slightly
higher than the thread tension bracket 
t and so that the
upper thread is not pulled out.
2. Pull the upper thread down until the thread tension
spring 
q is at the same height as the base of the thread
guide 
e, and then measure the...

SL-777B
10. STANDARD ADJUSTMENTS
10. STANDARDEINSTELLUNGEN
10. REGLAGES STANDARD
10. AJUSTES ESTANDARES
37
10-2. Adjusting arm thread guide R
10-2. Einstellen der Armfadenführung R
10-2. Réglage du guide-fil D du bras
10-2. Ajuste del guiahilos R del brazo
The standard position of arm thread guide R q is the posi-
tion where the screw w is in the center of the adjustable
range for arm thread guide R q.
* To adjust the position, loosen the screw 
w and then
move arm thread guide R q.¡When sewing thick...

SL-777B
10. STANDARD ADJUSTMENTS
10. STANDARDEINSTELLUNGEN
10. REGLAGES STANDARD
10. AJUSTES ESTANDARES
38
10-3. Adjusting the presser foot height
10-3. Einstellen der Stoffdrückerfußhöhe
10-3. Réglage de la hauteur du pied presseur
10-3. Ajuste de la altura del prensatelas
The standard height of the presser foot q is 5 mm when
the presser foot q is raised by means of the presser bar
lifter w.
1. Loosen the nut e of the adjustment screw r, and then
turn the adjustment screw r so that there is no pres-...

SL-777B
10. STANDARD ADJUSTMENTS
10. STANDARDEINSTELLUNGEN
10. REGLAGES STANDARD
10. AJUSTES ESTANDARES
39
10-4. Adjusting the feed dog height
10-4. Einstellen der Transporteurhöhe
10-4. Réglage de la hauteur de la griffe d’entraînement
10-4. Ajuste de la altura del alimentador
The standard height of the feed dog q when it is at its high-
est position above the needle plate is 1 mm.
1. Turn the machine pulley to move the feed dog to its
highest position above the needle plate.
2. Loosen the screw 
w.
3....

SL-777B
10. STANDARD ADJUSTMENTS
10. STANDARDEINSTELLUNGEN
10. REGLAGES STANDARD
10. AJUSTES ESTANDARES
40
10-5. Adjusting the feed dog angle
10-5. Einstellen der Transprteurneigung
10-5. Réglage de l’angle de la griffe d’entraînement
10-5. Ajuste del ángulo del alimentador
The standard angle of the feed dog q when it is at its high-
est position above the needle plate is obtained when the •
mark on the feed bracket shaft 
w is aligned with the mat-
ing mark on the feed rock bracket arm 
e.
1. Turn the...

SL-777B
10. STANDARD ADJUSTMENTS
10. STANDARDEINSTELLUNGEN
10. REGLAGES STANDARD
10. AJUSTES ESTANDARES
41
10-6. Adjusting the needle bar height
10-6. Einstellen der Nadelstangenhöhe
10-6. Réglage de la hauteur de la barre à aiguille
10-6. Ajuste de la altura de la barra de aguja
w
q
a
Reference lines
Bezugslinien
Lignes de références
Líneas de referencia
Reference line a, which is the second line from the bottom of the needle bar q should be aligned with the lower edge
of the needle bar bush (D) w as...

SL-777B
10. STANDARD ADJUSTMENTS
10. STANDARDEINSTELLUNGEN
10. REGLAGES STANDARD
10. AJUSTES ESTANDARES
42
10-7. Adjusting the needle and feed mechanism timing
10-7. Einstellen der Nadel- und Transporteursynchronisation
The standard position is for the point of the needle to be
approximately 1 mm below the needle plate 
w when the
feed dog q is lowered from its highest position until it is
level with the top of the needle plate w.
1. Remove the side plate.
2. Loosen the two set screws 
r of the vertical...

SL-777B
10. STANDARD ADJUSTMENTS
10. STANDARDEINSTELLUNGEN
10. REGLAGES STANDARD
10. AJUSTES ESTANDARES
43
10-7. Réglage de la synchronisation de l’aiguille et du dispositif d’entraînement
10-7. Ajuste de la sincronización de la aguja y el mecanismo de alimentación
La position normale est lorsque la pointe de l’aiguille se
trouve à environ 1 mm au-dessous de la plaque à aiguille
w lorsqu’on abaisse la griffe d’entraînement q de sa posi-
tion la plus haute jusqu’à ce qu’elle soit au même niveau
que le...