Pfaff 645F Owner's Manual - Page 18

Tension, Lower, Thread, Pressure

Get Pfaff 645F PDF manuals and user guides View all Pfaff 645F manuals
Add to My Manuals
Save this manual to your list of manuals

Page 18 highlights

TENSION OF LOWER THREAD If you are unable to balance the stitch by adjusting tension on the upper thread, you may have to make a slight adjustment in the bobbin tension. Take out bobbin case, remove bobbin and clean out any dust or lint which has collected around the case. Turn screw on bobbin case slightly in either direction using the small screw driver: To increase tension - turn screw slightly to the right. To decrease tension - turn screw slightly to the left. If stitch is satisfactory but the seam is puckered, it may be necessary to loosen tension on both top and bottom threads. For sewing on For a lighter buttons weight fabrics For darning For cmbroiderin For a heavy fabrics 0 1 2 PRESSURE With setting the lever at o position, the amount of pressure is completely released. With setting the lever at 2 position, the amount of pressure is applied. Set the lever at 2 position when sewing heavy fabrics. Set the lever at 1 position when sewing lighter weight fabrics. Adjust the pressure regulator according to sewing materials. Release pressure completely for embroidering, darning and sewing buttons. 14 - -

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
TENSION
OF
LOWER
THREAD
If
you
are
unable
to
balance
the
stitch
by
adjusting
tension
on
the
upper
thread,
you
may
have
to
make
a
slight
adjustment
in
the
bobbin
tension.
Take
out
bobbin
case,
remove
bobbin
and
clean
out
any
dust
or
lint
which
has
collected
around
the
case.
Turn
screw
on
bobbin
case
slightly
in
either
direction
using
the
small
screw
driver:
To
increase
slightly
to
To
decrease
slightly
to
If
stitch
is
satisfactory
but
the
seam
is
puckered,
it
may
be
necessary
to
loosen
tension
on
both
top
and
bottom
threads.
PRESSURE
With
setting
the
lever
at
the
amount
of
pressure
is
released.
With
setting
the
lever
at
the
amount
of
pressure
Set
the
lever
at
2
position
when
sewing
heavy
fabrics.
Set
the
lever
at
1
position
when
sewing
lighter
weight
fabrics.
Adjust
the
pressure
regulator
according
to
sewing
materials.
Release
pressure
completely
for
embroidering,
darning
and
sewing
buttons.
tension
—
the
right.
tension
—
the
left.
turn
screw
turn
screw
For
sewing
on
For
a
lighter
For
a
heavy
buttons
weight
fabrics
fabrics
For
darning
For
cmbroiderin
1
0
2
o
position,
completely
2
position,
is
applied.
—
14
—