Singer XL-420 Manual De Instrucciones página 28

ADJUSTING TOP THREAD TENSION
90% of your sewing will be accomplished with the word "S"
exposed on the tension control dial on top of the machine.
Helpful Hint: A slight adjustment to a higher number or a
lower number may improve sewing appearance.
STRAIGHT STITCHING
The correct appearance of your stitching is largely determined
by the balanced tension of both top and bobbin threads. The
tension is well balanced when these two threads 'lock' in the
middle of layers of the fabric you are sewing.
If, when you start to sew, you find that the stitching is irregular,
you will need to adjust the tension control. Do this, however,
only after you have determined that the machine is correctly
threaded (see page 7).
Make all adjustments with presser foot 'down'.
A balanced tension (identical stitches both top and bottom) is
usually only desirable for straight stitch sewing.
ZIGZAG, SATIN STITCH, DECORATIVE and
BUTTON HOLE SEWING
For zigzag sewing, satin stitch and decorative stitch functions,
thread tension should be less than that for straight stitch
sewing.
It is recommended for buttonholes to set thread tension at E.
You will always obtain a nicer stitch and less puckering when
the upper thread appears slightly on the bottom side of your
fabric.
BOBBIN TENSION
The bobbin tension has been correctly set at the factory,
so you do not need to adjust it.
CHANGING PRESSER FOOT
Be sure the needle is in the highest position. Raise presser
foot lifter.
1. Push presser foot release button to remove the foot.
2. Place the desired foot on the needle plate aligning the
presser foot pin with the foot holder.
3. Lower the presser foot lifter so that the foot holder snaps
on the foot.
22
Under side
Côté de dessous
Reverso
Well balanced
Correct
Bien equilibrada
Top side
Côté de dessus
Cara
Top stitch too tight
Fil supérieur trop tendu
Puntada superior
demasiado apretada
Decrease tension
Diminuer la tension
Disminuir tensión
2
Top stitch too loose
Fil supérieur trop lâche
Puntada superior
demasiado floja
Increase tension
Augmenter la tension
Aumentar tensión
Presser foot lifter
Levier de verrouillage du pied
Palanca pie prensatelas
3
1
Foot release button
Touche de verrouillage du pied
Boton de desprendimiento
prensatelas
Foot holder
Support du pied
Sujetador prensatelas