Pfaff Expression 3.0 User manual

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If you ore
a beginner,
slightly rotate
the balance
whee
in sewing
direction
by
hand when
commencing
to sew
In this
way
you keep
it from turning
in the
wrong direc
tion
and
causing
thread
jamming in
the
shuttle race
or
thread
breaking.
2.
Winding
the Bobbin
(See
Figs.
2 & 3)
1.
Disengage
the
sewing mechanism
by
loosening
ioc
nut
R.
2.
Place bobbin
7 on winder
spindle
4 so
that
the in
on
the
spindle
enters the slot
in the bobbin.
Fig.
2
2

3.
Place spool
on
the
transverse
spool pin.
4.
Pass
the thread
from spool 1
through
eyeet 2,
around
and between
tension
discs
3,
and lay
its
moistened
end on
the
bobbin.
5.
Engage
the bobbin
winder
by
depressng
ever
5.
When
treadling,
the
end
of the
thread
wdl easily
wind
on
the bobbin.
The
bobbin winder
will stop
automatically
when
the
bobbin
is
filled.
Do
not
wind
the
first turns
on
the
bobbin
by
hand as
this
would
cause
trouble if
the
bobbin
is
placed
on
tne
spindle
the
wrong
way.
Also,
me
thread
may break
when
sewing.
3.
Changing
the
Bobbin
1.
Raise
the
needle bar,
2.
Lift
latch
A
with the
forefinger
of
your left
hand,
3.
Pull
out
the
bobbin
case
with thumb
and forefinger,
as
shown
in
Fig.
4.
4.
Release
the
latch
and
remove
the
empty
bobbin.
As
long
as
you hold the
latch
open,
the
bobbin
cannot
fall
out.
5.
Insert the
full
bobbin
into
the
bobbin
case
so
that
the
thread
unwinds clockwise,
as
shown
in
Fig.
5.
Fig.
3
3

6.
Hold
the
bobbin in
the
bobbin
case,
pull the
thread
into
the slot
(Fig.
6),
and
draw
it
under the
tension
spring
(Fig,
7),
leaving
a
loose
end
about
1
inch
long
outside the
bobbin case.
Fig.
4
——
S
Fig.
5
4

With
the
needte
bar
rasea,
push
the
bobbm
case
on
the
center
stud
n
the
shuttle
and
turn
it until
ifs
position
finger
H
is
opposite
the
positcn
s(ot
(Fig.
4
8.
Push
the
bobbin
case
in
until
it
audibly
snaps
in
place.
Failure
to
observe
this
precaution
may
result
in bobbn
case
or
needle
breakage.
The
transverse soool
pin
ensures
even unwinding
of
the
thread
and
prevents
thread
breaking,
which
may
occur in
the
case
of vertical spool
pins
when
the
thread
SiES
off
the
spooi.
Raise the
presser
bar
lifter
and
thread
the
needle
as
fallows:
(See
Fig.
8).
Lead
the
thread from
spool
pin
1
under
thread
guide
2,
up
and
cound guide
3,
down
and
between
tenson
discs
4,
througn
crsec
spr:ng
5,
under
thread
regulator
6,
through
eyelet 7,
from
right
to
left
through
the
eye
Fig.
6
Fig.
7
4.
Threading the Needle
(See
Fig.
8)
5

9
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Basic
RuIe Always
make sure
the take-up lever
is
n
its highest position when
beginning or
end
ing
a seam.
Failure to
observe this
precau
tion
may
cause
thread iamming or unthread
ng of the needle.
If observed, it is
not
necessary to
hold the
threads when
begin
ning
to
sew.
6.
Regulating the Thread
Tensions
The tension on the needle
thread is
increased
by
turn
ing
tension nut
M (Fig. 11) to the
right,
and decreased
by turning it to
the left, Numbers
and marks stamped
on the
tension regulator cup
greatly help in restoring
the
correct
tension for any particular
sewing
job.
The
bobbin thread
tension is
regulated by means of
a
small
screw driver. The
tension
is increased
by
turn.
ing
screw S
(Fig. 12) clockwise, and
decreased
by
turn
ing
it counter-clockwise.
To
obtain a
perfect seam, observe the following
rules:
The needle and bobbin threads
should
be
locked in
the
center of the fabric, as
shown
in
Fig. 13.
Fig. 11
Fig, 12
8

The
renson
shouid be
regulated
n
accordance w h
tne materia
to be sewn
and snould be
sucn bot
e
sritcnes
wiL
ae
tghtly se
and
ie
in a
straight
ne.
Fig.
13
Tne grade o
nread
ued mays
an rncorcn nar r
meeting these
-eqwremenS.
Sneer
fabrics
equ
re a
tHn and
sof threoa wini
e astic
iarer
as ca
ror a
reslient
tnread
such
as s
crc., in
order
ro
prevent
tne
seams from
breoKrg
when
suolected to strain.
ttE:1[
fi
ii
Ii
fj
Eg.
14
n
regu aring
the
rnread
tensions you
hove to
nave a
tHe experience
before
you can
tell
wnich
tension
needs adjustment.
In
Fig.
14 eirher the
upper
tension may
be too
t
gir
or he ower
tensn too
oose,
Fig.
15
9

In
F
q
1
,
h—
tension
on
ne
need’e
thread
may
oe
too
aveak
or
vie
biter
tl.read
‘ens.on
‘00
t:gnt.
Knit
ai.
• nwe
Ia
ciec
ic
r
every
individual
case
if
either
‘e
•n
t
r
ni
1
e
lower
tension
requWes
adjus’ment,
;.rj’
‘unirly
whqn
the
thread
forms
sma.l
knots
or
knks
ii
tap
or bottom
of
the fabric.
tie
q
per
tension can
be
adjusted
only
when the
a
,er
bar
is
lowered
because
;t
wi
I
automatically
• care
the
tsnsion
when
raised.
7.
ChoosIng
the
Proper
Noodle
The
Pfaff
30
use,
System
705 needles
in
s Z05
00
prapriate
to
the
thread
and fabric
weights
t o
be
prac
essed.
Seect
the
correct
needle
from
the
Chart
on the
opposite
page.
Far
dense and thorougn:y
dressed
rraterias it .s
ad
visable
ia
se
ect
a
neede
one
size
arger
than
in&ca.
ed
in the
Otart.
Although
a
medium
size
neecle
is
odequate
for
oanory
sewing
operations,
it
s
recommended to
use
as tnin
a
needle
as possible
for
ightweight
fabrics
in
order
to
avoid
ugly
needle
holes
in
the material.
When
using
e
thin
needle
with
a
thick
t’ireod
or o
th.n
thread
in
a
thick
needle,
skipping
of stitches
or
thread
breaking
may
occur
as
o
result.
Never
use
rusty
needes
nce
the
neat
aooearance
of
the
finished
seom
and
‘he
orevention
of
threoo
break
•ng
great!y
depend
on
vie
n’ooth
finisn
af
‘e
need
e
10