Pfaff hobbylock 799 Owner's manual

Type
Owner's manual
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IMPORTANT
SAFETY
INSTRUCTIONS
This
sewing
machine
is
designed
and
manufactured
for
HOUSEHOLD
use
only.
When
using
an
electric
appliance,
basic
safety
precautions
should
always
be
followed,
including
the
following
Read
all
instructions
before
using
this
sewing
machine
DANGER
To
reduce
the
risk
of
electric
schock:
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
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.
W
ARNING
To
reduce
the
risk
of
burns,
fire,
electric
schock,
or
injury
to
persons
1
Do
not
allow
to
be
used
as
a
toy
Close
attention
is
necessary
when
this
sewing
machine
is
used
by
or
near
children.
2.
Use
this
sewing
machine
only
for
its
intended
use
as
described
in
this
manual.
Use
only
attachments
recommended
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
exami
nation
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
controller
free
from
the
accumulation
of
lint,
dust,
and
loose
cloth.
5
Never
drop
or
insert
any
object
into
any
opening
6
Do
not
use
outdoors
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
(
0
)
position
then
remove
plug
from
outlet
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,
grasp
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.
Use
needles
recommended
by
the
manufacturer
only.
14
Do
not
pull
or
push
fabric
while
stitching
It
may
deflect
the
needle
causing
it
to
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
electrical
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
re
winding
SAVETHESE
INSTRUCTIONS
Contents
Controls
of
the
sewing
machine
.
Accessory
box
Electrical
connection
Main
switch
and
sewing
light
Foot
control
Notes
on
safety
Handling
the
thread
spool
stand
Thread
guides
behind
the
carrying
handle
Opening
the
looper
cover
and
the
swingout
work
support
Threading
diagram
on
waste
box
Threading
thread
guides
2
and
34
Needle
combinations
Threading
the
right
looper
Threading
the
left
looper
Threading
the
chainstitch
looper
Threading
the
needles
Needle
threader
Thread
reel
change
with
machine
threaded
Fitting
the waste
box
Thread
regulator
Sewing
test
Points
to
observe
during
sewing/thread
trimmer
Securing
the
seam/sewing
foot
pressure/upper
knife
lock
. .
Setting
the
standard
thread
tensions
2-thread
chainstitch,
4-thread
safety
stitch.
3-thread
overedge
stitch
2-
or
4-thread
overedge
stitch
/
4-thread
safety
stitch
4-thread
safety
stitch,
2-thread
chainstitch
with
overedge
stitch
Correcting
the
thread
tensions
3-thread
overedge
stitch
Engaging
and
disengaging
the
converter
Correcting
the
thread
tensions
of
the
twothread
seam
Thread
chart
for
5-thread
overedge
stitch
Thread
chart
for
4-thread
overedge
stitch
Pushlock
for
stitchlength
settings
Setting
the
stitch
length
Setting
the
differential
feed
Disengaging
the
upper
knife
Disengaging
the
everedge
looper
Converting
the
machine
to
2-thread
chainstitch
(stitch
type
1)
.
Inserting
the
workpiece
guide
plate
Adjusting
the
seam
width
Thread
regulator
Changing
the
sewing
foot
Changing
the
needles
Changing
the
lower
knife
Changing
the
upper
knife
Changing
the
light
bulb
Cleaning
the
thread
tensions
Stitch
selection
table
Sewing
problems
and
their
remedies
Oiling
the
machine
Accessories
Thread
spool
net
and
thread
unreeling
disc
Special
accessories
Specifications
2,3
4
4,5
5
5
5
6
6
7
7
8
8
9
10
11
2
13
13
14
15
16
17
18
19
20
21
21
22-24
25
24
27
28
29
29
.29,30
31,32
33
33
.33.34
34
35
37
39
40
41
42
43
43
44-51
52-53
54
55
56
56-62
63
z
LL
Controls
of
the
sewing
machine
1
Thumbwheel
for
sewing
foot
pressure
2
Thread
guides
with
colour
markings
3
Carrying
handle
4
Thumbwheel
for
left
needle
thread
tension
5
Thumbwheel
for
right
needle
thread
tension
6
Thumbwheel
for
right
looper
thread
tension
7
Thumbwheel
for
left
looper
thread
tension
8
Thumbwheel
for
chainstitch
looper
tension
9
Thread
tension
cover
10
Knife
guard
11
Handwheel
and
stitch
length
adjustment
1
2
Looper
cover
13
Loopercover
opening
recess
14
Upper
knife
1
5
Swingout
work
support
16
Adjusting
knob
for
differential
feed
17
Needle
plate
18
Sewing
foot
19
Needle
holder
________________________________________
20
Sewing
foot
lifting
lever
21
Thread
spool
stand
22
Thread
spool
pins
23
Machine
socket
24
Main
switch
25
Lint
box
26
Foot
control
27
Foot
control
plug
28
Mains
plug
29
Lower
knife
30
Lower
knife
set
screw
31
Right
looper
32
Left
looper
33
Twothread
chainstitch
looper
34
Thread
guide
behind
carrying
handle
(see
p.6)
35
Seam
width
adjusting
knob
36
Upper
knife
retainer
37
Thread
spool
centering
piece
38
Telescopic
thread
guide
bar
39
Pushlock
(for
stitch
length)
40
Converter
41
Thread
regulator
42
Thread
cutter
43
Sewing
light
cover
44
Upper
knife
set
screw
3
Accessory
box
The
accessory
box
can
only
be
inserted
in
its
compartment
as
shown
in
the
illustration.
The
guide
groove
of
the
box
must face
downwards.
Fully
open
work
support
15
and take
out
the accessory
box.
Electrical
connection
This
machine must
only be
used
on
a
flat
and
even
surface
or
on
a
special
sewing
table.
Connecting foot control
26:
Insert
plug
27
of
the
control
in
machine
socket
23,
then
connect
mains
plug
28
to
the
mains
socket.
Caution:
Always
remember!
When
the
machine
is
not
in
use,
always
switch
it
off
at
main
switch
24
and
dis
connect
the
plug
from
the
power
source.
Do
not
place
any
objects
on
the
foot
control.
4
5
Switching
the
machine
on
and
off
Both
power
and
sewing
light
are
swit
ched
on
and
off
with
main
switch
24.
Switching
on:
Press
switch.
Machine
and
sewing
light
are
switched
on.
Switching
off:
Press
switch
again.
Machine
and
sewing
light
are
switched
off.
Foot
control
The
speed
of
the
Hobbylock
is
regula
ted
as
follows:
The
further
you
press
the
foot
control,
the
faster
the
machine
will
sew.
Electronic
foot
control
The
maximum
speed
can
be
preselec
ted
in
two
stages
by
the
switch
on
the
foot
control.
Position
=
Half
speed
Position
44
=
Full
speed
Notes
on
safety
A)
Owing
to
the
up
and
down
movement
of
the
needles
and
the
upper
knife,
the
user
must
take
sufficient
care
to
avoid
injury
and
observe
the
sewing
area
continuously
during
sewing.
B)
When
the
machine
is
left
unattended,
when
service
work
is
carried
out,
or
mechanical
parts
or
accessories
are
changed,
the
machine
must
be
disconnected
from
the
mains.
C)
The
maximum
approved
wattage
of
the
light
bulb
is
1
5
watts.
0)
The
drive
belt
tension
must
only
be
adjusted
by
a
Pfaff
mechanic.
Handling
the
thread
spool
stand
Pull
thread
spool
stand
21
as
far
as
it
will
go
in
the
direction
shown
by
the
arrow.
Fully
extend
telescopic
thread
guide
bar
38.
Slowly
turn
the
two
upper
telescopic
sections
until
you
hear
their
arresters
snap
in
place.
guide
bar
38.
Push
thread
spool
stand
(with
or
without
spools)
fully
against
the
machine.
After
use,
fold
up
telescopic
thread
handle
Swing
carrying
handle
3
upwards
as
shown
by
the
arrow.
Thread
guides
34
then
become
visible.
Thread
guides
behind
the
carrying
6
Opening
and
closing
looper
cover
and
work
support
Push
looper
cover
12
fully
to
the
right,
hold
it,
and swing
it
down.
To
close
the
looper
cover,
push
it
up
until
it
locks.
To
open
work
support
15,
push
it
in
the
direction shown
by
the
arrow.
To
close
the
work
support,
push
it
lightly
until
it
locks.
Selecting
stitch
types
Stitch
types
1
to
8
are
illustrated
on
the machine
behind
the
looper
cover.
The
needle
combinations
(A,
B
and
C)
and
the
thread
tensions
used
are
colourcoded.
A
needle
chart
with
the
corresponding
set
screws
is
printed
underneath.
Important!
While
the
looper
cover
or
work
sup
port
is
open, power supply
to
the
machine
is
interrupted.
Important!
A
While
the
looper
cover
or
work
sup
port
is
open,
the
power
supply to
the
machine
is
cut
off.
Threading
paths
for
different
stitch
types
on
the
rear
side
of
the
waste
box.
On
the
righthand
side
the
stitch types
(1
to
8)
with
the corresponding
threa
ding
points
A
are
indicated.
Each
threading
path
has
its
own
colour.
Move
the
slide
so
that
threading
point
A
for
the
required
stitch
type
(1
to
8)
is
coloured
orange.
Now
thread
all
colourcoded
threading
paths,
see
pages
8
to
1
2.
Indication
B
shows
you
whether
the
overedge
looper
must
be
engaged
or
disengaged
(see
pages
33, 34).
Please
note
Only
the
eight
stitch
types
on
the
rear
side
of
the
waste
box
can
be
set
using
the
slide.
Other
sttch
types
are
shown
in
the
stitch
selection
table
(pages
44
to
51).
7
Threading
thread
guides
2
and
34
Place
thread
spools
on
the
spool
pins.
Threading
must
be
done
carefully.
First
thread
up
guides
2
according
to
colours.
Then
lift
carrying
handle
3
and
place
the
thread
in
rear
guides
34.
Set
the
thread
tensions
at
N
and
thread
the
machine
in
the
following
sequence:
1.
right
looper
(red)
2.
left
looper
(yellow)
3.
right
needle
(green)
4.
left
needle
(blue)
Fold
carrying
handle
3
down
again.
Needle
combinations
In
the table
behind
looper
cover
12
the
needle
combinations
for
stitch
types
1
to
8
are
indicated.
Remove
any
needles
not
in
use
by
loo
sening
their
set
screws
A,
B
or
C
(for
needle
change
see
page-
40).
8
9
Threading
the
right
looper
Thread
the
right
looper
in
sequence
1
to
B
and
pull
about
four
inches
of
thread
through
the
looper
eye.
The
thread
path
is
marked
in
green
in
the
threading
diagram
on
the
rear
side
of
the
waste
box.
Important:
In
order
to
achieve
perfect
sewing
results,
the thread
must
be
pulled
between
the
tension
discs
during
threading.
Note:
Changing
a
spool
with
the
machine
threaded
Cut
the
threads
off
close
to
the
thread
spool.
Place
new
thread
spools
on
spool
holders
22.
Tie
the
ends
of
the
old
thread
and
new
thread
together.
Pull
the
needle
threads
out
of
the
needles.
Now
pull
the
threads
through
until
the
knots
are
about
six
inches
past
the
last
thread
guide
before
the
needles.
Cut
the
knots
off
and
thread
up
the
respective
needles.
The
looper
threads
can
be
pulled
through
beyond
the
looper
eyes.
Pull
about
four
inches
of
thread
through
the
looper
eye.
I
Threading
the
left
looper
Thread
the
left
looper
in
sequence
1
to
L
10
and
pull
about
four
inches
of
thread
through
the
looper
eye.
The
threading
path
is
indicated
in
yel
low
in
the
threading
diagram
on
the
rear
side
of
the
waste
box.
Important:
In
order
to
achieve
perfect
sewing
results
the
thread
must
be
pulled
bet
ween
the
tension
discs
during
threa
ding.
Note
Changing
a
spool
with
the
machine
threaded
Cut
the
threads
off
close
to
the
thread
spool.
Place
new
thread
spools
on
spool
holders
22
Tie
the
ends
of
the
old
thread
and
new
thread
together.
Pull
the
needle
threads
out
of
the
needlesS
Now
pull
the
threads
through
until
the
knots
are
about
six
inches
past
the
last
thread
guide
before
the
needles.
Cut
the
knots
off
and
thread
up
the
respective
needles.
The
looper
threads
can
be
pulled
through
beyond
t
the
looper
eyes.
Pull
about
four
inches
of
thread
through
the
looper
eye.
-..
10
Threading
the
chainstitch
looper
11
Thread
the
chainstitch
looper
in
sequence
1
to
9
and
pull
about
four
inches
of
thread
through
the
looper
eye.
The
threading
path
is
marked
mauve
in
the
threading
diagram
on
the
rear
side
of
the
waste
box.
Important:
In
order
to
achieve
perfect
sewing
results,
the
thread
must
be
pulled
bet
ween
the
tension
discs
during
threa
ding.
Note:
Changing
a
spool
with
the
machine
threaded
Cut
the
threads
off
close
to
the
thread
spool.
Place
new
thread
spools
on
spool
holders
22.
Tie
the
ends
of
the
old
thread
and
new
thread
together.
Pull
the
needle
threads
out
of
the
needles.
Now
pull
the
threads
through
until
the
knots
are
about
six
inches
past
the
last
thread
guide
before
the
needles.
Cut
the
knots
off
and
thread
up
the
respective
needles,
The
looper
threads
can
be
pulled
through
beyond
the
looper
eyes.
Pull
about
four
inches
of
thread
through
the
looper
eye.
Threading
the
needles
Threading
the
chainstitch
needle
(A>
Carry
out
threading
for
the
chainstitch
needle
in
sequence
1
to
7.
The
threading
path
is
marked
blue
(tri
angular
symbol).
Threading
needle
B
or
C
(with
or
without
needle
A).
Carry
out
threading
for
the
overedge
needle
in
sequence
1
to
6.
The
threading
path
is
marked
pink
(dot
symbol).
Threading
overedge
needles
B
and
C
(without
needle
A).
Carry
out
threading
for
the
overedge
needle
in
sequence
1
to
6.
The
threading
path
for
needle
B
is
blue
(dot
symbol)
and
for
needle
C
pink
(dot
symbol).
Threading
must
be
carried
out
in
the
sequence
blue/pink.
Important:
Only
use
the
machine
with
one
or
two
needles
(depending
on
stitch
type).
12
Needle
threader
(accessory)
Lower
the
sewing
foot
using
lifting
lever
20.
Turn
the
hand
wheel
until
right
looper
31
is
positioned
right
of
the
needle.
Place
the
thread
in
slot
A
of
the
needle
threader
and
tauten
it
a
little,
holding
the
needle
threader
turned
a
little
to
the
front.
With
the
needle
between
the
two
guide
lugs
B,
move
the
needle
threader
slowly
downwards
at
the
rear
side
of
the
needle
until
the
small
hook
C
enga
ges
in
the
needle
eye
(middle
illustra
tion>.
Hold
the
thread
taut
and
place
it
in
hook
0
and
the
thread
will
automatically
place
itself
in
hook
C,
too.
Pull
the
needle
threader
to
the
rear,
out
of
the
needle
eye,
and
the
thread
will
be
pulled
through
the
eye.
Pull
the
thread
fully
through
the
needle
eye.
Note:
Changing
a
spool
with
the
machine
threaded
Cut
the
threads
off
close
to
the
thread
spool.
Place
new
thread
spools
on
spool
hol
ders
22.
Tie
the
ends
of
the
old
thread
and
new
thread
together.
Pull
the
needle
threads
out
of
the
needles.
Now
pull
the
threads
through
until
the
knots
are
about
six
inches
past
the
last
thread
guide
before
the
needles.
Cut
the
knots
off
and
thread
up
the
respective
needles.
The
looper
threads
can
be
pulled
through
beyond
the
looper
eyes.
Pull
about
four
inches
of
thread
through
the
looper
eye.
13
After
threading,
close
work
support
1,
fold
down
carrying
handle
2
and
close
looper
cover
3.
Fitting
the
waste
box
Insert
the
tonues
of
the
box
in
the
cutouts
on
the
front
cover.
Seam
depth
graduations:
Application
example:
If
the
seam
allowance
of
a
cut
part
is
20
mm,
the
edge
of
the butting
must
be
guided along
the
20
mm
graduation
on
knife
guard
10.
Press
the
waste
box
downwards
against
the
front
cover
until
it
snaps
in
place.
Rmoval
of
the
waste
box
is
carried
out
in
the
reverse
order.
14
15
Thread
regulator
Depending
on
the
stitch
type,
regulator
41
must
be
set
in
position
R
or
N.
Position
R
is
for
all
rolledhem
seams.
Position
N
is
for
all
other
seams.
How
to
use
thread
regulator
41:
Pull
regulator
41
outwards
and
push
it
downwards
to
position
R
until
it
snaps
n
(see
ill.).
Pull
regulator
41
outwards
and
upwards
until
it
snaps
in
(see
ill.).
Sewing
test
After
threading,
a
sewing
test
should
be
carried
out.
Raise
the
sewing
foot
with
lifting
lever
20
as
shown
in
the
illustration.
Hold
the
thread
ends
with
your
left
hand
and
turn
the
hand
wheel
with
your
right
hand
in
the
direction
indica
ted
by
the
arrow
on
the
wheel.
Hold
the
threads
taut
and
place
them
back
under
sewing
foot
18.
Place
in
the
test
fabric
against
upper
knife
14
and
lower
lifting
lever
20.
Make
sure
the
threads
interloop
cor
rectly
during
sewing
(thread
chain).
Points
to remember
during
sewing!
Sew
the
first
stitches
sIowy.
If
the
machine
has
been
rethreaded,
place
the
fabric
under
sewing foot
8
and
push
it
up
to
the
needle
before
starting
to
sew.
Since
the
fabric
is
fed
automatically,
do
not
pull
or
push
the
fabric.
Use
your
hands
for
guiding
only
Thread
cutter
In
order
to
use
thread
cutter
42
it
is
necessary
to
sew
beyond
the
end
of
the
seam.
Draw
the
resulting
thread
chain
through the
thread
cutter
from
the
rear
(see
bottom
illustration).
Securing
the
seam
Knot
the
thread
chain.
For
knit
fabrics,
a
crochet
needle
can
be
used
to
pull
the
thread
chain
into
the
seam.
Or:
Sew
about
two
inches
beyond
the
end
of
the seam.
Turn
the
workpiece
around
and
sew
a
few
stitches
over
the
seam
just
sewn
without cutting
the
thread
chain.
17
Adjusting
the
sewing
foot
pressure:
Setting
,,N”
of
thumbwheel
1
is
the
standard
sewing
foot
pressure.
If
very
thick
fabrics
are
to
be
sewn,
set
the
thumbwheel
at
,,4’.
For
very
thin
fabrics
set
the
thumbw
heel
at
,,1”.
Upper
knife
lock
Sewing
very
thick
fabrics
in
different
ply
thicknesses:
This
machine
can
sew
all
kinds
of
fabric
from
very
light
to
very
heavy.
For
extremely
heavy
fabrics,
or
work-
pieces
of
different
thickness,
the
screw
of
the
upper
knife
must
be
fully
tighte
ned
as
shown
in
the
illustration.
When
screw
36
is
tightened,
the
upper
knife
is
locked
axially.
Please
note:
To
sew
light
or
mediumheavy
fabrics,
loosen
screw
36
for
the
upper
knife
lock
by
about
two
turns,
so
that
the
upper
knife
can
move
in
the
axial
direction.
18
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Pfaff hobbylock 799 Owner's manual

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Owner's manual

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