Pfaff hobbyblock 756 User manual

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Simple,
up-to-date
sewing
Congratulations!
You
have
bought
a
high-quality
product
that
provides
unique advantages.
Your
new
hobbylock
756
can
take
any
material
in
its
stride
and
will
sew,
trim
and
neaten
up
for
you
in
one
ope
ion.
Your
PFAFF
hobbylock
features
the
very
latest
in
design
and
technology,
and
it
is
just
as
easy
to
use
as
this
instruction
manual
is
to
follow.
If
you
now
take
a bit of
time
to
study
the
instruction
manual
nothing
can
go
amiss.
It
is
certainly time
well
spent,
since
it is
the
only
way
to
find
out
just
what
your
machine
can
do
and
put
it
to
full
use.
If
you
have any
further
questions
just ask
your
PFAFF
dealer.
He
is
happy
to
be
of
service
with any
help
or
advice.
So
now
let’s
get
started!
We
wish
you
many
enjoyable
hours creating
your
very
own
fashion ideas.
Safety
ru’es
For
the
United
Kingdom only
The
leads
must
under
no
circumstances
be
connected
to
the
safety-lead terminal
I nor
to
a
plug
with
three
pins.
The
wires
in
the
mains
lead are
coloured according
to
the
following
code:
Blue:
Neutral
Brown:
Live
As
the
colours
of
the
wires
in
the
mains
lead
of
this
appliance
may
not
correspond
to
the
colour
coding
of
the
terminals
in
your
plug,
proceed
as
follows:
The wire
which
is
coloured
blue
must
be
connected
to
the
terminal
which
is
marked with
the lettter
N
or
coloured
black.
The wire
which
is
coloured
brown
must be
connected
to
the
terminal
which
is
marked
with
the letter
L
or
coloured
red.
Under
no
circumstances
should
cut-off
mains
plugs
be
used.
They
should
be
disposed
of
immedia
tely.
Defective
mains
leads
must
be
completetly
replaced.
Only
3
A
spare
fuses
must
be
used
as
approved
by
ASTA
according
to
BS
1
362
and
the
fuse
cover
must
be
marked
3
A
or with
the
corresponding
colour
code.
The plug
must
never
be
used without
fuse
covers.
Spare
fuse
covers
are
available
from
electrical
sup
pliers
or
the
PFAFF
agencies.
Please
also
observe
the general safety
notes
on
page
2.
:

IMPORTANT
SAFETY
INSTRUCTIONS
For
the
United
States
only
This
sewing machine
is
designed
and manufactured
for
HOUSHOLD use
only.
When
you
use
an electric
appliance,
the
following
basic
safety
precautions
should
always
___________________
be
adhered
to:
Read
all
instructions
before using this
sewing machine.
DANGER
To
reduce
the
risk
of electric shock:
1.
The
sewing
machine
should
never be
left
unattended
when
plugged
in.
Always
unplug
this
appliance from
the electric
outlet
immediately
after
using
and
before cleaning.
2.
Always
unplug
before
relamping.
Replace
bulb
with
same
type
rated
15
Watts.
3. Do
not
reach
for
a sewing
machine
that
has
fallen
into
water.
Unplug
immediately.
:
4. Do
not
place
or
store
a
sewing
machine where
it
can
fall
or
be pulled
into
a
tub
or sink.
Do
not
place
in or
drop
into
water
or
other
liquid.
WARNING
To
reduce
risk
of burns
fire
electric
shocks
or
injury
to
persons
1:
1.
Do
not
allow
to
be used
as a
toy.
Great
care
is
necessary
when
this sewing
machine
is used
by
or
near
children.
2. Only
use
this
sewing
machine
for its
intended
purpose
as
described
in
this
manual.
Only
use
attachments
re
commended
by the manufacturer
as contained
in
this
manual
3.
Never
operate
this
sewing
machine
if
it
has
a
damaged
cord
or plug,
if it
is
not
working
properly,
if it
has
been
dropped
or damaged,
or
dropped
into
water. Return
the
appliance
to the
nearest
authorized
dealer
or
service center
for
examination
repair,
electrical
or
mechanical
adjustment
4.
Never
operate
the
sewing
machine
with
any
air
openings
blocked.
Keep
ventilation
openings of
the
sewing
machine and
foot
control
free
from
the
accumulation
of lint
dust
and
loose
cloth
5. Never
drop
or
insert
anything
into
any
opening.
6.
Do
not
use
out
of
doors.
7
Do
not
operate
where
aerosol
(spray)
products
are being
used
or
where
oxygen
is being
administered
8.
To disconnect,
turn
all
controls to
off
(,,O’)
position,
then
remove
plug
from
socket.
9
Never
operate
on
a soft
surface such
as
a
bed
or
couch
where
the
air
openings
may
be
blocked
10.
Do
not
unplug by
pulling
on
cord.
To unplug,
hold
the
plug,
not
the
cord.
11.
Keep
fingers
away
from
all moving
parts. Special
care
is required around
the
sewing
machine needle.
12.
Always
use
the
proper needle
plate.
The
wrong plate
can
cause
the
needle
to
break.
13.
Do
not
use
bent
or
blunt
needles,
Only
use
needles recommended
by
the
manufacturer.
14.
Do
not
pull
or
push
fabric
while
stitching.
It may
deflect
the
needle,
causing
itto
break.
15
Switch
the
sewing
machine
off
(
0’)
when
making any
adjustments
in
the
needle
area
such
as
threading
needle,
changing
needle,
threading
bobbin,
or
changing
presser
foot,
etc.
16.
Always
unplug sewing
machine
from
the
electric
outlet
when
removing
covers,
lubricating,
or
when
making
any other
user
servicing
adjustments
mentioned
in the
instruction manual
:
17. Hold
plug
when
rewinding
into
cord
reel.
Do
not
allow
plug
to whip
when
rewinding.
I
Please
also observe the
general
safety
notes
on
page
2
KEEP
THESE
INSTRUCTIONS
IN
A
SAFE
PLACE.
4

Notes
on
safety
Notes
on
safety
for
domestic
sewing
machi
nes
according
to
EN
60335-2-28
bzw.
IEC
335-2-28.
1.
The
user must
exercise
adequate
caution
with
regard
to
the
up
and down
move
ment
of
the
needle
and keep
the
sewing
area
under
constant
observation
while
working.
2. When
leaving
the
machine,
during
maintenance
work
or
when
changing
mechanical
parts
or
accessories,
always
disconnect
the
machine
from
the mains
by pulling
out
the
mains
plug.
3.
The maximum
permissible
wattage
for
the
sewing
lamp
is
15
Watts.
4.
The
tension
of
the
drive
belt
should
only
be
adjusted
by
a
Ptaff
mechanic.
5.
The
machine
should
be
put
into
operation
as
indicated
on
the
specification
plate.
6.
Do
not
place
any
objects
in
openings
on
the
machine.
7.
Do
not use
the
sewing
machine
if:
—
there
is
visible
damage,
—
its function
is
defective,
—
it
is
wet, e.g.
with
condensation.
8. Do
not
pull
the
mains
plug
out
of
the
sok
ket
by
its
cord.
9.
If
this
appliance
is
used
for
another
pur
pose than
that
intended
or if
it
is
wrongly
operated,
we
cannot
accept
any
liability
for
any
damage caused.
1
0.
To
avoid
the
risk
of
electric shock,
do
not
open
the
machine. There are
no
parts
in
side
the
machine
which
the
user
can
re
pair.
This
the
exclusive responsibility
of
our
qualified
service
staff.
11.
Be
sure
to use
only
original
PFAFF
parts.
Environment
The
recommended
environment
is:
Ambient
temperature
100
C
to
40°
C
Humidity
20
%
to
80
%
This
sewing
machine
is
a
high-quality
electro
mechanical
appliance;
it is a
machine
for
supervised
use
in
the home.
It
should
be
ope
rated
in such
a
way
that
it
is
not
exposed
to:
dust,
severe
dampness,
direct
sunlight,
sta
tic
electricity, heat-producing
objects,
corro
sive
chemicals
or liquids.
To
permit
adequate
ventilation
the
machine
must
be
kept
unblocked
and
used
on
a
firm
and
even
surface.
Treatment
Always
make
sure
not to
damage
your
machine
by
knocking
or
dropping
it.
Cleaning
Housing
and
display:
To
clean
the
housing,
use
a
dry,
clean
and
soft
cloth
which
is
free
of
fluff.
To
remove
any
stub
born dirt,
use
a
soft
cloth
with
alcohol
or
paraf
fin.
Please
Note!
Never
use
insecticides
or chemical
products
such
as
petrol
(gas) or
thin
chemicals
to
clean
the
housing.
Ir
.1
I
I
I
I
I
2

CONTENTS
Page
1
Accessories
4
2. Needle
information
4
3.
Principal parts
5
4. How to
open
looper cover
6
5.
Principal parts
behind
looper cover 6
6.
Preparation prior to
sewing 6
7. Setting
up the thread
guide holder 7
8.
How
to
remove and insert needle
8
•
To remove needle (s)
8
• To insert
needle (s)
8
9.
How
to
remove and replace
cloth plate 9
10.
How to
remove and
replace
cylinder cover 9
11.
Threading the
machine
10
• Threading diagram
10
• Understanding
the color
code 10
• Stitch
diagram
10
a
To thread the
machine correctly
10
• Important threading information
17
12. Chaining
off and test
sewing
18
13. Basic stitch types
19
• 4
thread
overlock
mock safety
stitch
19
• Wide
3
thread
overlock stitch 19
a Narrow 3
thread overlock
stitch 19
14.
How
to
adjust
thread tension
19
• Suggested
tension settings
for 4 thread
overlock mock safety
stitch
20
a
Correct
balance of the 4
thread
overlock mock safety
stitch
20
a How to balance
the 4 thread
overlock mock
safety stitch
20
•
Suggested
tension setting
for the
3 thread overlock
stitch
21
•
Correct
balance
of the 3
thread
overlock
stitch
21
4
•
How
to balance the 3 thread
J
overlock
stitch
21
15. How
to change
threads/tie on
method . . .
.22
16. How
to adjust the
stitch length
23
17. How
to disengage movable upper
knife . .
. .23
• To place
movable knife in
nonworking position
23
•
To place movable
knife in working
position
24
Page
18. Seam guide lines
24
19.
How
to adjust the overedge
seam
width
25
20.
How to
sew a rolled
hem
26
• Machine set up
26
•
Suggested
tension settings for
standard rolled hem
27
• Suggested tension settings
for
upper
looper
thread wrapped rolled
hem . . . .27
•
How
to balance
the upper
looper
thread wrapped rolled hem
27
• Additional information about
rolled hemming
28
•
To
secure the
rolled hem
thread
chain
28
21. Stitch variations and
sewing
techniques
29
•
How to sew
a
flatlock
decorative
seam
29
•
How
to sew an overlock blind hem
31
• How
to sew pin
tucks
31
•
Turning square corners
32
• Pin placement
33
• Securing the thread chain
33
• Applying elastic 34
•
How
to reinforce a seam 35
• Braiding
by chaining off
35
• Differential feed (with differential
feed
machine only) 36
22.
How
to adjust the presser foot pressure. .
. .38
23. Free
arm sewing
38
24. Relationship
between cloth, thread
and needle
39
25. Machine
maintenance 40
• Cleaning the machine 40
• Oiling the machine
40
• How
to replace the stationary knife . .
. .41
• How
to exchange light
bulb
42
26. Troubleshooting
chart 43
27. Optional accessories and attachments 44
28. Specification 45
3

1.
ACCESSORIES
(
Needle
set
(
Screwdriver
(sheet
metal)
Sciewdiver
(small
si7e)
®
Tweezers
©
Rolled
hemming
throat
plate
©
Hex-head
wrench
See
page
44
for
optional
accessories.
1
1
I
2.
NEEDLE
INFORMATION
*
This
overlock
uses
a
flat
shank
industrial
needle
that
eliminates
the
possibility
of
inserting
the
needle
backwards.
*
Do
not
attempt
to
use
a
standard
household
sewing
machine
needle
of
any size
or
type
in
this
overlock.
*
needle
#2054
size
14
is
furnished with
the
machine.
Regular
point
needles
(#2054-42)
for
sewing
woven
fabrics
and
ball
point
needles
(2054-06)
are
available
for
sewing
knits.
Both
types
are
available
in
sizes
10,
12,
14
&
16.
*
Refer
to
the
chart
on
page
39
for
selecting
the
correct
needle
for
your
sewing
projects.
#2054
Overlock
needle
-
0
fl
U
J
L
V
Regular
Point
Ball
Point
wovens
knits
#2054-42 #2054-06
10
10
Sizes
12
12
available
I__________
4

3.
PRINCIPAL
PARTS
Thread
guides
and
holder
©
Handle
Pressure
regulating
screw
Left needle
thread
tension
dial
(blue)
®
Right needle
thread tension
dial (green)
©
Upper
looper
thread
tension
dial (orange)
©
Lower
looper
thread
tension
dial
(yellow)
®
Throat
plate
®
Cylinder
cover
Cloth
plate
©
Looper
cover
©
Power
&
light
switch
©
Stitch
length
dial
©
Hand wheel
©
Motor
cover
®
Spool
stand
©
Cone
adapter
®
Spool pin
5

4.
HOW TO
OPEN
LOOPER
COVER
*
Push the
cover
to
the
right
as
far
as
it
will go.
*
Pull
cover
down
toward
you.
()
Caution:
Be
sure
looper
cover
is
closed
when
sewing.
5.
PRINCIPAL
PARTS
BEHIND
LOOPER
COVER
()
Upper
looper
() Movable
upper
knife
®
Presser
foot
®
Stationary
lower
knife
®
Lower looper
6.
PREPARATION
PRIOR
TO
SEWING
*
Connect
the
controller/electric
plug
tD
to the
machine
receptacle
().
*
Plug
power
line
©
into
electric
outlet
®.
*
Power
switch
Push
“I”
mark
side
(used
also
for
light switch) to
turn
“ON”
Push
“0”
mark
side
to
turn
“OFF”
*
To
run
the
machine
and
control
the
speed,
press
the
controller.
*
The
harder
you
press,
the
faster the
machine
will
sew.
*
To
stop the
machine
from
sewing,
remove
your
foot
from
the
controller.
*
This
appliance
has
a
polarized
plug
(one
blade
wider than
the
other). To
reduce
the
risk
of
electric
shock,
this
plug
is
intended
to
fit
in
a
polarized
outlet
only
one
way.
If
the
plug
does
not
fit
fully
in
the
outlet,
reverse
the
plug.
If
it
still
does
not
fit,
contact
a
qualified
electrican
to
install
the
proper
outlet.
Do
not
modify
the
plug
in
any
way.
For
this sewing
machine
has to
be used
foot
controWe
No.
4
C-316
B.
Be
sure to
make
reference
to
“Warning” on
foflowing
page.
6

Warning:
*
Be
sure
that
the
electrical
voltage
of
the
electric
outlet
(wall
receptacle)
is
the
same
as
the
rated
voltage
of
the
motor.
*
Handle
the
foot
controller
with
care
and avoid
dropping
it on
the
floor.
Be
sure
not
to
place
anything
on
top
of
it
when
not
in
use.
*
Disconnect
the
powerline
plug
from
the
electric
outlet
when changing needles,
presser feet
or
throat
plates,
or
when
leaving
the machine
unattended.
This
eliminates
the
possibility
of
starting
the
machine
by
accidentally
pressing
the controller.
*
Befor&cleaning
your
machine,
disconnect
the powerline
plug
from
the electric
outlet.
7.
SETTING
UP
THE
THREAD
GUIDE
HOLDER
*
This
machine
is
shipped
with
the
thread
guide
holder
in
the
lowered
position.
*
Fully
extend
the
thread
guide
holder.
*
The two
joints
on
the telescope
will
click
into
place
when
they
are
correctly positioned.
*
Center
the
thread
guides
above
the
spool
pins.
*
Place
thread
over
the
cone
adapters
on
the
spool
pins.
Note:
If
the
machine
is
threaded,
straighten
the
threads
to prevent
tangling.
7

8.
HOW
TO REMOVE
AND
INSERT
NEEDLES
•
TO
REMOVE
NEEDLE
(S)
*
Be
sure
to
disconnect
the
machine from
the
electric
outlet
before
removing
needle(s).
*
Turn the hand wheel
toward
you
until
the
needle
is
at
its
highest
position.
*
Loosen,
but
do
not
remove
the
needle
set
screw
with
the
small
screwdriver.
—
left
needle
set screw
—
right
needle
set screw
©
*
Remove the
needle(s).
•
TO
INSERT
NEEDLE
(S)
*
Hold
the
needle
with
the flat
surface
to
the
back.
*
Insert
the
needle
into
the
needle
clamp
as
far
as
it
will
go.
Note:
The
left
needle
®
will
be
slightly
higher
than the
right
needle
®.
*
Securely
tighten
the needle
set
screw.
Note:
*
This
machine
uses
#2054
needles.
Refer to
page
4
for
additional
needle
information.
*
Remove
the
cloth
plate
or
the
cylinder
cover
if
you
find
it
difficult
to
remove
and
replace
the
needle.
Rat
surface
to
the
rear
1?
8