Husqvarna Viking 990 User Manual

Fault-finding
Why
haven’t
I
got
the
results
I
expected?
Very
seldom
does
anything
go
wrong
with
this sewing
machine.
It is
well
constructed
and
can
withstand
very
intensive
use.
Yes,
generally
it
performs
better
the
more
it
is
used.
However,
below
you
will
find
some
advice
if,
in
spite
of
everything,
you
are
not
satisfied
with
your
sewing
results.
Always
start
by
checking
the
needle
An
important
part
which
needs
to
be changed
from
time
to
time
is
the
needle.
Always
start
with
a
new
needle
as
soon
as
you
discover
that
a
seam
is
not
what
you
expected.
Test
sew
on
a
scrap
of
the
fabric
you
are
sewing.
Read
about
needles
on
pages
16
and
17.
Check
that
you
have
chosen
the
correct
needle
and
see
that
it
is
correctly
inserted.
Unattractive
stitches
The
thread
tension
is
not
correct.
See
page
13.
The
machine
may
be
incorrectly
threaded.
The
correct
threading
is
shown
on
page
11.
The
needle,
thread
and
fabric
do
not
correspond.
See
pages
16
and
17.
Wrong
upper
thread.
It
should
be
of
the
same
thick
ness
as
the
lower
thread.
Bobbin
wrongly
inserted
in
the
bobbin
case.
See
page
11.
The
needle
breaks
You
may
have
helped
the
machine
to
feed
by pulling
the
fabric.
The
needle
can
easily
strike
against
the
needle
plate
and
break.
The
upper
thread
breaks
Check
the thread
spool
to
see
that
it
has
not
caught
in
any
way.
The
needle
eye may
have
sharp
edges
which
cut
the
thread.
If
so, change
the
needle.
See
page
16.
The
upper
thread
is
incorrectly
threaded.
See
page
11.
The
upper
thread
may
have
too much
tension.
Refer
to
thread
tension,
pages
12
and
13.
The
thread
is
knotted.
The
thread
and
needle
do
not correspond.
See pages
16
and
17.
The
hole
in
the
needle
plate
may
be chipped
and
have
sharp
edges.
Slight
damage
to
the needle
plate
can
pos
sibly
be
polished
or
filed
but
we
recommend
that
you
replace
it.
See
page
52.
Lower
thread
breaks
The
bobbin
case
is
incorrectly
inserted.
See
page
11.
The
lower
thread
may
be
incorrectly
threaded.
See
page
11.
The
needle
plate
hole
is
damaged.
Slight
damage
to
the
needle
plate
can
possibly
be polished
or
filed
but we
recommend
that
you
replace
it.
See
page
52.
53

Husqvarna Viking 990 Specifications

General

Brand	Husqvarna
Model	Viking 990
Category	Sewing Machine
Language	English