Riccar Serger Instruction Manual page 14

SETTING STITCH LENGTH
The stitch length can be adjusted between 1 and 5
mm.
As a rule, light weight fabrics take a shorter stitch.
Heavy weight fabrics need longer stitches.
Most normal sewing is done with stitch length dial set
at 3. This produces a medium length stitch which
makes a strong seam and is suitable for most fabrics.
For shortest stitch, turn dial to 1.
For longest stitch, turn dial to 5.
SETTING SEAM WIDTH
This overedge seam width can be adjusted to sew a
3.5 mm (about 1/8") to 5 mm (about 1/6") stitch. The
machine is set at 3.5 mm which is the width used most
often for overlock sewing. For heavy weight fabrics, set
control knob to wider stitch.
1. Disconnect the electrical cord from the wall outlet.
2. Open front cover and Free Arm Cover.
3. Push the Upper Knife Holder to the right and turn
the Seam Width Knob downward to select wider
stitch width. For smaller width turn knob in opposite
direction.
When adjusting the width, use graduations on throat
plate as guide and line up with left edge of lower knife
holder,
ADJUSTING THE PRESSURE ON
FABRIC
The pressure on the toot can be adjusted for different
weight fabrics.
The fabric should move along smoothly and evenly
without slipping
Stitches should be uniform in size.
The pressure on this machine is set for sewing me¬
dium weight fabncs.
For sewing light weight fabrics, decrease the pressure
(turn screw to left).
For heavy weight fabrics, increase the pressure (turn
screw to right).
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