Alfa 4900 Manuel D'instructions page 57

q
q
w
e
w
e
q
q
w
e
w
Using the seam guides on the needle plate
q Needle drop position
w Edge of fabric
e Needle plate guide lines
The seam guides on the needle plate are engraved to help
you measure seam width. The number on the needle plate
indicates the distance between the center needle position
and the edge of the fabric. The lines are 1/8˝ (0.3 cm)
apart, and engraved at 3/8˝, 4/8˝, 5/8˝ and 6/8˝. The lines in
millimeters are 5 mm apart, and are engraved at 10 mm,
15 mm and 20 mm.
Turning a square corner
q Cornering guide
w Up/down needle position button
e Presser foot lifter
To maintain a 5/8˝ seam allowance after turning a square
corner, use the cornering guide on the needle plate.
1. Stop sewing when the front edge of fabric reaches the
cornering guide lines q.
2. Lower the needle by pressing the up/down needle
position button w.
3. Raise the presser foot e and turn the fabric
counterclockwise 90°.
4. Lower the presser foot, and begin stitching in the new
direction.
Using the quilting guide
q Quilting bar holding screw
w Quilting bar
e Seam guide line
Use the seam guide lines on the needle plate, and the
free-arm, to help determine the distance between quilting
stitches. The quilting bar will help keep the seam lines
parallel and evenly spaced.
z Loosen the quilting bar holding screw q on the back of
the presser foot as shown.
x Slide the quilting w into the hole under the screw to
the space of quilting stitches you desire.
c Tighten the screw q.
v Sew guiding the quilting over the previous row of
stitching.
See page 116 for quilting stitch instructions.
Sewing on heavy fabric
q Fabric
w Black button
The black button on foot A will lock the foot in a horizontal
position if you push it in before lowering the presser foot.
This ensures even feeding at the beginning of seams and
helps when sewing many layers of fabric such as sewing
over welt seams when hemming jeans.
When you reach a point of increased thickness, lower the
needle and raise the presser foot. Press the toe of the foot
and push in the black button, then lower the foot and
continue sewing. The button will be released after a few
stitches.
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