Pfaff hobbylock 799 User 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