Problem And Remedies - White 310 Operator Instructions Manual

PROBLEM AND REMEDIES
—
Trouble Probable Cause
____
Remedies
The machine sticks
Thread or lint in the shuttle
.
Clean and oil the machine and the shuttle
jook.
—
jL
(seepage34(.
Skipped stitches
rBent needle
RpIace with new needle (see page 8).
Needle placed incorrectly Fit the needle correctly (see page 8).
in the clamp.
Place a piece of paper beneath the fabric,
or use the Ball Point Needle.
1
Rghten the upper tension
Incorrect threading
See threading instructions, page 11.
[Bobbin not wound evenly_Jjust the bobbin winder (see page 10).
1
Material is being held back
Avoid pulling or holding the material just
or pulled.
guide
it.
Upper thread tension not
tight enough.
Poor quality thread.
Needle too fine for the
J
thread being used.
Refer to the threading instructions on
page 11 and rethread the machine.
Refer to the needle fitting instructions
on page 8.
Try a new needle.
Throw away all blunt or bent needles and
replace with new needles.
See tension adlustment recommendations
on page 15.
Incorrect feedinl]
runt
in the feed dog.
rRemove
the needle plate and clean lint
i L
-
_J
[rom the feed dog.
Loosen the upper thread tension (see
page 15).
Replace the needle or thread so that they
are correctly matched (see page 7).
Too fine a needle for the
thread being used.
Too stretchy fabric.
Irregular stitches Upper thread tension too
loose.
Uneven stitches
Upper thread breaks
Increase the tension.
Try a different thread.
See the needle and thread chart, page 7,
Always Start sewing with the take-up
lever in its highest position.
Incorrect threading.
Tension too tight.
Sewing is started with the
take-up lever in the wrong
position.
Needle fitted incorrectly.
Eye of the needle bent or
too sharp.
aent or blunt needle.
Material puckers Tensions too tight.
Dull needle.
J
Ltc
length too long.
Machine is noisy
1
Stitch length control is set
and material is not
at other than the
* mark.
fed when stretch
.
stitches are
[
Change the needle.
educe the stitch length.
______________
Set stitch length control at the * mark.
35