Singer 9800 - Lower Thread and Tension Control; Bobbin Case and Threading; Thread Tension Adjustment

L____
Threading
lower
thread/Thread
tension
Threading
the
bobbin
Place
the
bobbin
in
the
bobbin
case
with
the
mark
facing
outward.
Draw
the
thread
into
the
slot
on
the
bobbin
case
and
under
the
ten
sion
spring.
Pull the
thread
and check
that
the
bobbin
is
turning.
Replace
the
bobbin
case
From
behind,
place
the
thread
be
hind
the
“finger”
on
the
bobbin
case.
Replace
the
bobbin
case
so
the
finger
points
upwards.
Press
the
bobbin
case
so
it
clicks
into
proper
position.
Pull
the
thread
to
the
left
below
and up
into
the
thread
knife.
The
thread
is
cut oft
and
kept
in
position.
Close
the
cover.
The
bobbin
thread
will
come
up
automatically
when
you
start
to
sew.
3—4,
When
topstitching
with a
coarse
thread
in
thick
fabrics,
increase
the
tension
to
7—9.
i
4
L.J
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LEL
4•
Remove
the
bobbin
case
Open
the
cover.
Grasp
the
bobbin
case
with
your
thumb
and
index
finger
so
the
spring
is
pressed
in.
Remove
the
bobbin
case.
The
bobbin
will
remain
in
the
case
as
long as
the
spring
is
pressed.
Thread
tension
You
can
adjust
the
thread
tension
by
turning
the
dial
which
is
num
bered.
The
higher
the
number
the
tighter
the
tension.
Normal
thread
tension
is
between
5—6.
When
sewing
buffonholes
and
decorative
stitches
the
most
suit
able
thread
tension
is
in
position
11
:
‘::..