If Threads Break During Sewing; To Sew Fine Materials; Narrow Overlock/ Rolled Hemming Stitch - Brother ST4031HD Operation Manual

If threads break during sewing

Remove the material and re-thread in the correct
order, Lower looper, Upper looper, right needle and
then the left needle (to re-thread, see CHAPTER
3 "Threading"). Replace the material under the
presser foot and sew 3-5 cm (1-1/8 to 2 inches)
over the previous stitches.
CAUTION
Do not leave straight pins in the fabric when
sewing as they will damage the needles and
knives.

To sew fine materials

1. Adjust the presser foot pressure to prevent the
material from puckering and to allow sewing
of curves. (See CHAPTER 1 "Adjusting the
presser foot pressure".)
2. Loosen the thread tension, but remember that if
the tension is too loose, the thread may break
and stitches may be skipped.

Narrow overlock/ Rolled hemming stitch

The Narrow overlock/Rolled hemming stitch is
a decorative finish for lightweight to midweight
fabrics. It is often used to complete the edge of
a fabric. This stitch is sewn by removing the left
needle and using the 3-thread overlock stitch.
Instructions for both narrow overlock/
Rolled hemming stitches
CAUTION
Turn off the main power and light switch before
removing/ installing a needle.
1. Remove the left needle.
NOTE:
For the recommended thread and needle, see
CHAPTER 4 "Sewing materials, threads, and
needles comparison chart".
2. Thread the machine for a three thread overlock,
using the right needle.
3. Remove the stitch finger <A>.
1 Raise the presser foot lever.
2 Pull all threads toward the back of the
machine.
3 Check to make sure that the thread is no
longer wrapped around the stitch finger.
4 Open the front cover.
5 Turn the hand wheel until the upperlooper is
at its lowest position.
6 Pull the stitch finger to the right and remove
it.
<A>
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