Pfaff 78 User manual

—
L
CPFAFFI
78
CPFAFFi
79
Instructions
CPFAFFi
78 and
79
Decorative
Stitch
Zigzag
Sewing Machine
Foreword
‘‘our
new Pfaff sewing
machine
will enable
you to
master
a
large
variety
of sewing,
embroidering
and
darning
jobs easily
and
quickly.
With
the built-in decorative
stitch
mechanism
you
also can sew
various functional
seams
as
are used on non-elastic
as
well
as
stretch
fabrics,
such as
tricot. jersey and
Helanca.
This
instruction
book has
been compiled
in
order
o
familiarize
you
thoroughly
with
all
the sewing
jobs
coming
up in
a
home.
We suggest
that
you
try
out the
various
sew
ing techniques
discussed
in
this
book
so
that
you will become
well acquainted
with
your
machine.
If
you
have any
sewing problems,
please
do
not
hesitate to contact
your
Pfaff
dealer who
will
be
glad
to
help you at
any
time.
We
hope
you
will
always
enjoy
sewing
with your
Pfaff.
PFAFF-
Haushaltmaschinen
GmbH
L
ji
Karisruhe-Durlach

Needle and Thread
Chart
Thread Needle
Type
of
Fabric
Type
Size Size
Point
Style
Bed
linen
80
Fine
linen
Cotton
40 70
— 80
Muslin
70
— 80
Dress
fabrics,
such
as
brocade
Silk
50
satin ottoman,
taffeta,
georgette,
70
— 80
crêpe,
chiffon,
batiste,
blouse
Cotton
or
mercerized
fabrics
and
poplin
shirting cotton
50
Suitings
and
mantlings
Silk
40
80
— 90
Twill,
denim
Cotton
40 90
— 100
130
R
Heavy
linen
Cotton
40 90
—100
Cotton
or
linen
40
90
— lao
Burlap
Linen
40
110
Terry
cloth,
chenille
goods,
— Cotton
40
knitted
pile
fabric
for
bath-
80
— 90
robes,
Corduroy
Silk
50
Cotton,
rayon
staple
fabrics
Cotton
50 70
— 80
Synthetic
50
Jersey
fabrics
(synthetic)
70
— 80 130
ses
Cotton
50
Synthetic
50
Lastex,
Helanca fabrics
70
— 90
130
ses
Silk
50 —
Synthetic
40 70
— 80
Foambacks
130
R
Silk
40 90
Jersey
fabrics
(wool)
Silk
50 80 130
ses
Woolens
Mercerized
cotton
50 70
— 80
130
R
Cotton
curtains
— Mercerized
cotton
40
70
— 80
130
suk
Synthetic
curtains
Synthetic
thread
40 70
— 80
Acella,
leatherette
oilcloth
Cotton
40
80
PCL
Elastic
corsetry
fabrics,
Firm
Synthetic
thread
40
70
— 90
corsetry
fabrics,
corset
satin
Cotton
1
40 90
130
ses
Leather
Cotton
40
110 130
Lr
Linen
40
Embroidery
thread
30
— 50 70
Heavy
embroiderythread
90
— 100
Buttonhole
silk
Decorative
stitching
Embroidery
and
30
8
130
R
darning
thread
50 70
—
I
Silver-gold
thread
70 80
— 100
Silver
thread

Essential Parts
of
Your
Pfaff
78
o
Face cover
1
Take-up lever
2
Thread guide
3
Top
cover
4
Thread retainer
stud
5
Spool
pins
6
Stitch control
7
Bobbin winder
8
Balance
wheel
9
Stop
motion
knob
10
Motor
disengaging mechanism
11
Stitch
length control
12
Reverse feed control
13
Bed
cover
14
Transverse
rotary hook
(below
bedplate)
15
Needle
plate
16
16
Sewing foot thumb
screw
17
Light
switch
15
18
Stitch width control
19
Needle
position lever
20
Needle
thread
tension
21
Presser
bar
lifter
(on
back of
machine
arm)
22
Needle
set
screw
23
Sewing
foot
2
0
Face cover
1
Take-up
lever
2
Thread
guide
3
Top
cover
4
Thread retainer
stud
5
Spool
pins
6
Stitch
control
7
Bobbin
winder
8
Balance
wheel
9
Stop
motion
knob
10
Motor disengaging mechanism
11
Stitch length control
12
Reverse
feed control
13
Free arm
14
Free
arm
cover
(enclosing
transverse
rotary
hook)
15 Needle plate
16 Sewing foot thumb
screw
17
Light switch
18
Stitch width
control
19
Needle
position lever
20
Needle
thread tension
21
Presser
bar
lifter
(on
back of
machine
arm)
22
Needle set screw
23
Sewing foot
17
9
14 13
17
14
3

Push
plug A
into
the
receptable
on
the
back
of
the
machine
and
the
plug at
the
other end
of
the
cord
into
wall
outlet.
To
switch
on
the
sewlight,
push
the button
on
the
face
cover
(see
ill.).
4
Place
the
foot
control
within easy
reach
of
your
foot
and press
down
the
pedal.
The
harder
you
press,
the
faster
the
machine
will
run.
The
machines feature
a
ever (10)
under
neath
the balance
wheel
which
serves
to
swing the motor
to
its
operative
position.
To
engage
the
motor,
flick this
lever
down.
After you
have completed
sewing,
flick
this
lever
to
its
top
position.
J
S

o
remove iflC
0000111
•.
.-
.
,
--
ne
Oe
n
at
o
too
‘ts
On
toe
Pfaft 78.
re’ro,e
bec
.ooer
13
as
iatec.
itt
arch
k
ci
:ne
oo•nbc
case
and
puli
out the
000Dm case
w
th
the
boo-
bin.
The ooobin
cannot
tab
out
as
long
as
Jcu
hoc
tne
case
Dv
its
ocen
.aton.
Unci re
‘eas
ng
the
atch
the ernoty
000Dm aroos
cur
On
the
Pfaff
79.
the
bobbin
case
s
emoved
just
ike
on
the
Pfaff 8.
To
get
at
the
bocoin case.
however,
•,ou
must brat
open
tree arm
cover
It,
swinging
3
toward the
left.
For bobbin
winding,
d’sengage
the
sewing
mechanism.
Hold
balance wheel
8)
wnile
turning stop
motion
knob
t9)
toward you
t see
ill,).
To
engage
:he
sewing
mechanism
ader
the
bobbin nas
oeen
wound,
turn
the
s:on
mo
tion
knob away
from
you
as
ndicated
by
the
arrow n
tne
lii.
Pass
the
toread
around thread
retaner
stud
2)
in
the
direction
indicated
oy
the arrow.
Place a
bobbin
on
the
bobbin
winder
spindle,
making sure
that
key
A at
its
base
enters
slot
B
in
the bobbin
isee
ill.).
W’nd a
few
turns
cf
thread on
the
boobin
and
ush
the
boboin toward the
right.
Start
the
machine.
When
the bobbin
is full, it
is
pushed toward
the
left
and can
be
removed
from
the
spindle.
B
1
k
.1
8
4
E1Ezz.

ms
bobbin case.
8
tne
h’ead nto
st
2i
and
under spring
3. As
/)U Pu
the :hread.
the
ocbb-t
should
tate
clockwse 4
Leave
abDut
three
uches of thread hang:na
from
te
boobin
onse
To
insert
the
bobbin
case
into
the
machine
turn
the
balance
wnee!
until
the
needle
is
at ts
highest
point.
Lift the latch
and
place
me
bobbn case
on
center
stud
s
tsee
ill.),
making
sure
its slot
(white
arrow)
points
up.
Release
the
atcn
and
press
against
the
boobin
case
until
you
hear
it
snap
into
p1 ace.
3

To
enlarge
the
sewing
area
of
the Pfaff
79
for
ordinary
sewing
operations,
push the
workplate
onto
the tree
arm as
far
as
it
will
go
(1). Then ock
it
in place
by
turning
down
the ever
on the back
of the
machine
(2)
until the
locking
stud
snaps
into the
hole
in
the
free
arm. Press
the workplate support
against
the machine
base
until it
snaps into
place
(3).
To
remove
the workplate,
swing
up
its sup
port
and unlock
it by
pulling out
and
swing
ing
up
the lever
on the
back
of the
machine
(see
arrow
in Fig.2).
On
machines
having
no carrying
case
base.
the
workplate
support
is pressed
against
the
baseplate
of
the machine.
10
3
Upper
threading
as illustrated:
Please
note
that
the
thread
is
placed
be
tween
any
two
of
the
tension
discs
(20),
pulled
clockwise around
the
tension stud
and
drawn
toward
the
right
with a
jerk
(see
ill). As
you
do
this,
hold
on to
the
spool
so
that
thread
cannot
unwind.
Thread
the
needle
from
front to
back.
1
2
‘%
---—

The sewing
foot
is
raised
and lowered
by
operating
the
presser
bar
lifter (21)
on
the
back
of the
machine
(see
ill.).
A Presser
bar
lifter
up
B
=
Presser
bar
lifter down
12
To
draw
up
the
bobbin
thread,
hold the
needle
thread
and lower the
sewing
foot.
Turn
the
balance
wheel
toward you
afull
turn.
Pull
the
needle
thread
to
draw
up the
bobbin
thread.
Place
both
threads
back
under
the sewing
foot
after
it
has been raised
again.
Turn Stitch
control
(6)
clockwise
(as
indicated
by
arrows
in
Fig.
1)
until
the
symbol
of
the
desired
stitch
is at
the
bottom.
For
ordinary
sewing,
needle
position
lever
(19>
should
be
in its center
position
(Fig.
2).
Make
sure
take-up
lever
(1)
is at
highest
point
before
you
begin and
after
you
have
completed
a
seam
(Fig.
3).
Always turn
balance
wheel
(8)
toward
you
(see
arrow).
As you
do
this,
check
to
make
sure
stop
motion knob
(9)
is
tightened
irrnly
(Fig.
4).
Fundamentals
of
Machine
Operation
---/-z-
19
2
CPFAFFZ

To
sew
onger
straight-stitch
seams,
turn
stitch
control
(6)
until
the
straight-stitcn
symbol
is
at
the bottom
see
ill.).
To
sew
in
reverse
or bacictack the end
of
a
seam,
simply
press
down
finger
tip control
(12).
Tne
stitch
length
s
regulated
cy
:urning
stitcn
ength
control
1(.
The
number
Indi
cating
the
st:tch
enght chosen
should
be
Qoposite
the
dot
on
the
left-hand
side
of
the
slot.
For
ordinary
sewing
operations, set
the
stitcn
enath
control
on
‘2”.
P 1 ace
the
materiai
under
the
sewing
foot
and lower
the
presser
bar
Liter
:ne
cor
oontrci
vthin
easy
macn
of
/our
foot
and
press
down
the
pedai.
The
narder
you
press,
the
faster
the
machine
will
run.
For
zigzag
sewing,
turn
stitch
control
(6)
on
hl the
zigzag-stitch
symbol
is
at the bottom.
Then
regu’ate
me stitcn
Nldth
by
pusnirg
stitcn
width
control
(18)
toward
the left,
as
desired.
Jarious
zigzag sewing
operations
are
dis
cussed
on
page
26 and
foe
following
cages.
Seti ng
the macnine
for sewing
the various
des
go
patterns
‘s explained
on page
3.
wnle
the
following
cages
contain
:nstruc
uons
3r
‘Jarious
sev:ng
operations.
-,
-
18
nosneo
:o be
rght
as
ar
as
t
WI
I
go
11
I
I
18
::
‘!I!!;
-‘4
15

needle and
bobbin threads
interlock
in
the
center
of
the material.
The
bobbin
thread tension
is regulated
by
turning the
smaii knurled
screw
on the
bob
bin case.
Turn this
screw
right
(with
your thumo
nail)
for
a
tighter tension,
or left for
a
looser
ten
sion.
If
the
same
size threads
are
used
in the
needle
and
on
tne
bobbin,
there
is no
need
to adjust
the bobbin
thread
tension.
This
tension
is
set
correctly
if
a
slight
re
sistance
has
to be
overcome
when
pulling
the thread.
Numbers
0 to
10 indicate
different
degrees
of tension
on
the
upper
tension
dial.
The
higher
the number,
the
tighter
the tension.
For
ordinary
sewing
operations.
the
upper
tension
should
be set at
about
5.
Please
note:
Ease
both tensions
somewhat
for
sewing
synthetic fabrics.
16
The
accessory
box
which belongs
to your
machine
contairs
several
sewing feet
for
special
sewing Dperations.
To
change
the
sewing foot,
bring
the
needle
to its
highest
point
and raise
the
foot. Turn
screw
(16)
until
the sewing
foot
can ce
re
moved,
tilting
it
sideways
(see
Figs. 1
&
2).
The
new foot
is
attached
in
the
reverse
order.
For
sewing
elastic
fabrics,
attach
ordinary
sewing
foot
No,
93-838 954-00
rather
than
clear-’iiew sewing
foot
No. 93-100
179-00.
Uoper
tension
too
tight or
lower tension
too
loose.
To
change
the
needle,
bring
the needle
bar
to
its
highest
point and
lower
the
sewing
foot,
Loosen
needle
set screw
(22)
and pull
the
old needle
out
of the
needle
clamp.
Insert
new
needle
and
push it
up as
far
as
it
will
go
(Fig.
3),
making
sure that
the
flat
side of
its
shank faces
:oward
the
back.
Tighten
screw
(22) securely.
bottom top
bottom
top
.Jpper
tension
too loose
or lower
tension
too
tight.
top
Both
tensions
correctly
balanced.
1
3
2
Use
System
130
R needles
only.