hobbylock 4870
I
PFAFF
hobbylock
4870
Instruction
manual
For
easier
understanding
of
this
instruction
manual
please
fold
this
or
the
last
page
out
when
reading.
Safety
rules
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
con
nected
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
immediately.
Defective
mains
leads
must
be
completetly
replaced.
Only
3
A
spare
fuses
must
be
used
as
appro
ved
by
ASTA
according
to
BS
1362
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
suppliers
or
the
PFAFF
agencies.
Please
also
observe
the
general
safety
notes
on
page
2.
ZfindZntsonPae4an>
r
1
Parts
of
the
hobbylock
4870
(1)
Upper
thread
tension
—
left
(2)
Upper
thread
tension
—
right
(3)
Handle
to
carry
(4)
Looper
thread
tension
—
right
(5)
Looper
thread
tension
—
left
(6)
Looper
thread
tension
for
chainstitch
(7)
Display
(8)
Window
for
the
stitch
length
(9)
Window
for
the
differential
feed
(1
0)
Key
for
speed
selection
(11)
Program
key—left
Cursor
key
—
middle
Mod
key
(right)
(1
2)
LED
needle
display
A,B,C
(13)
Knife
guard
(14)
Looper
cover
(1
5)
Sewing
foot
(combination
foot)
(16)
Needle
plate
(17)
Adjusting
knob for
seam
width
(1
8)
Detachable
work
support
(1
9)
Window
for
the
seam
width
(20)
Accessories
box
(21)
Needle
holder
(22)
Lever
for
the
sewing
foot
pressure
(37)
Right
overedge
looper
(38)
Converter
(39)
Left
overedge
looper
(40)
Chainstitch
looper
(41)
Automatic
looper
threader
for
the
left
looper
(42)
Knob
to
disengage
upper
knife
(43)
Knob
to
disengage
the
right
overedge
looper
(44)
Positioning
lever
for
the
chainstitch
looper
(45)
Lever
to
disengage
needle
plate
(46)
Screw
to
secure
upper
knife
(47)
Screw
to
secure
lower
knife
(48)
Lower
knife
(49)
Upper
knife
A.
Important
safety
instructions
For
the
United
States
only
‘
This
sewing
machine
is
designed
and
manufactured
for
HOUSEHOLD
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
1
5
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
the
risk
of
burns,
fire,
electric
shock,
or
injury
to
persons:
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
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
pro
perly,
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.
1
3:fYonot
use
bent
or
blunt
rm&tles.
Only
use
needles
recommended
by
the
manufacturer.
14.
Do
not
pull
or
push
fabric
while
stitching.
It
may
deflect
the
needle,
causing
it
to
break.
1
5.
Switch
the
sewing machine
off
(NO”)
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.
1
7.
Hold
plug
when
rewinding
into
cord
reel.
Do
not
allow
plug
to whip
when
rewinding.
Please
also
observe
the
general
safety
notes
on
page
2.
KEEP
THESE
INSTRUCTiONS
IN
A
SAFE
PLACE
—
Notes
on
safety
Notes
on
safety
for
domestic
sewing
machines
according
to
DIN
57
700,
Section
28
or
IEC
335, Section
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.
Ihe
maxim
“n
permissible
wattage
for
the
sewing
lamp
is
5
Watts.
4.
TI,?
tension
of
the
drive
belt
should
only
be
idjusted
by
a
Pfaff
mechanic.
5.
Th
‘-3c[..ie
should
be
put
into
operation
as
i.
iicated
on
the
specification plate.
6.
Do
r..
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
socket
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.
10.
To
avoid
the
risk
of
electric
shock,
do
not
open
the
machine.
There
are
no
parts
inside
the
machine
which
the user
can
repair.
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
1000
C
to
40°
C
Humidity
20%
to
80%
This
sewing
machine
is
a
high-quality
elec
tro-mechanical
appliance;
it
is
a
machine
for
supervised
use
in
the
home.
It
should
be
operated
in
such
a
way
that
it
is
not
exposed
to:
dust,
severe
dampness,
direct
sunlight,
static
elec
tricity,
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
stubborn
dirt,
use
a
soft
cloth
with
alcohol
or paraffin.
Please
Note!
Never
use
insecticides
or
che
mical
products
such
as
petrol
(gas)
or
thin
chemicals
to
clean
the
housing.
2
Simple,
up-to-date
sewing
Congratulations!
You
have
bought
a
high-quality
product
that
provides
unique
advantages.
Your
new
hobbylock
4870
can
take
any
material
in
its
stride
and
will
sew,
trim
and
neaten
up
for
you
in
one
operation.
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
enjoy
able
hours
creating
your
very
own
fashion
ideas.
3
Contents
2
thread
overlook
stitch...........
2
thread
overlock
with
safety-stitch
.
-
2
thread
rolled/flat
hem
3
thread
overlook
stitch
3
thread
overlook
with
safety-stitch
3
thread
rolled/flat
hem
4
thread
overlock
stitch
Accessories
Accessory
box
Automatic
threader
Bead
sewing
foot
Blindstitch
foot
Chainstitch
Chainstitch
—
needle
A
Chainstitch
looper
Changing
the
knife
Changing
the
light
bulb
(sewing
light).
Changin9
the
needle
Changing
the
needle
plate
Changing
the
sewing
foot
Changing
the
spool
Cleaning
the
knife
Cleaning
the
needle
plate
Converter
Converting
the
machine
(chainstitch)
Correction
of
the
thread
tension
Detachable
work
support
Differential
feed
Disengaging
the
overedge
looper.
Disengaging
the
upper
knife
Disengaging
the
upper
knife
Display
Elastic
tape
sewing
foot
Electrical
connection
Electronics
Entering
new
data
Foot
control
Free
arm
Gathering
foot
Gimp
thread
stitching
foot
Knob
to
adjust
seam
width
Lace
sewing
foot
LED
needle
display
(A,
B,
C)
Left
overedge
looper
Page
44,53
44
52
43,48
43
53
44
65—76
10
15,16
75
70
43
20
17
78,79
80
29
30,31
30
21
81
80
49,50
32,33
45-47
9
27,28
32
32
32
38
72
8,9
35—40
40
8
9
73
71
25
76
38
15,16
4
Spool
net.
67
5
Looper
cover
1
2
Lower
knife
.
79
Main
switch
9
Maintenance
and malfunction
77
—
83
Material
guide
plate
33
Needle
plates
N
and
R
53
Needle
threader
1
9
Normal
accessories
66,
67
Oiling
81
Overedge
needles
20,
21
Practical
sewing
41
—
55
Problems
when
sewing
82
—
83
Program
chart
56
—
63
Programming
language
36
Right
overedge
looper
14
Rolled
hem
52,
53
Safety
instructions
1
Securing
the
seam
14
Setting the
programs
39
Sewing
foot
chart
68
Sewing
foot
lever
22
Sewing foot
pressure
34
Sewing
test
23
Special
accessories
68
—
76
Specifications
84
Speed
pre-selection
37
Spool
disc
67
Spool
stands
1
1
Standard
thread
tension
42
Stitch
length
adjusting
knob
26
Taping
foot
69
Technical
part
7
—
3
Thread
charts
54,
55
Thread
cutter
24
Thread
unreeling
disc
67
Threading
the
looper
14
—
18
Threading
the
needles
20,
21
Threading
the
thread
guides
1
3
Upper
knife
78
Upper
knife
lock
34
Waste
box
1
2
—
*
Technical
part
Electrical
connection
Detachable
work
support
Accessory
box
Spool
stands
Waste
box
/
looper
cover
Threading
the
thread
guides
and
the
looper
Threader
Threading
the
needles
Sewing
foot
lever
Sewing
test
/
thread
cutter
Seam
width
adjusting
knob
Stitch
length
adjusting
knob
Differential
feed
Changing
the
needle,
sewing
foot
and
needle
plate
Converting
the
machine
for
chainstitch
seam
Fixing
the
upper
knife
/sewing
foot
pressure
page
8,
9
page
9
page
10
page
11
page
12
page
13—18
page
19
page
20,
21
page
22
page
23,
24
page
25
page 26
page
26
—
28
page
29
—
31
page
32,
33
page
34
7
—...-n,-v--—
,,.,,
Electrical
connection
Connect
the
mains
cord
between
socket
(29)
of
the
sewing
machine
and
the
wall
socket.
Connecting
the
foot
control
Connect
the
plug
of
the
foot
control
with
the
connection
socket
(31)
of
the
sewing
machine.
The
preset
area
of
the
sewing
speed
(see
page
37)
is
regulated
by
pressing
the
pedal.
Caution:
Do
not
put
anything
under
the
pedal.
8
I
ri
Main
switch
When
the
main
switch
(30)
is
turned
on
the
sewing
light
is
turned
up.
The
machine
is
now
operational.
To
remove
detachab’e
work
support
/
free
arm
The
free
arm
is
particularly
suited
to
sew
tubular
goods
without
any
difficulty.
To
do
so
pull
the
detachable
work
support
(18)
to
the
left.
Insert
the
workpiece
in
the
oppo
site
direction.
9
Accessory
box
To
remove:
To
open:
Grip
in
the
recess
beneath
the
accessory
Open
the
accessory
box
(20)
by
pressing
box
(20)
and
pull
out
in
the
direction
of
the
two
points
,,A”.
the
arrow.
To
insert:
Push
the
accessory
box
(20)
into
the
appropriate
opening
until
it
catches.
The
words
,PFAFF
hobbylock”
must
be
facing
upwards.
10
--
-,
Spool
stands
Before
the
spools
are
attached
you
must
pull
the
spool
stand
(28)
out
fully
in
the
direction
of
the
arrow.
Extend
the
telescopic
thread
guide
(24)
fully.
To
assure
optimal
thread
take-up
the
two
upper
telescopic
extensions
must
be
turned
slowly
until
you
hear
the
ball
stops
catch
in
place.
When
you
have
finished
sewing
push
in
the
telescopic
thread
guide
(24)
and
push
the
spool
stand
(28)
in
towards
the
machine,
with
or
without
the
spools,
until
it
catches
in
place.
11
V
N
I
Waste
box
Insert
the
tabs
on
the
waste
box
(51)
into
the
notches
on
the looper
cover
(14)
and
press
it
down
against
the
looper
cover
until
you
can
hear
it
catch
in
place.
To
take
off
reverse
this
process.
ODD
C
0
Looper
cover
Push
the
looper
cover
(14)
to
the
right
until
it
catches
in
place
and
then
swivel
it
down.
The
individual
threading paths
as
well
as
the
converter
setting
are
illustrated
in
colour
on
the
inside
of
the
looper
cover.
Note:
The
power
supply
is
interrupted
when
the
looper
cover
is
opened
i.e.
it
is
now
not
possible
to
sew
with
the
machine.
,,Close
looper
cover” appears
in
the
dis
play.
The
LEDs
also
flash
the
preset
speed.
12
-
Threading
thread
guides
Place
thread
spools
on
the
spool
pins
(25).
For
smaller
spools
we
recommend
you
attach
a
thread
unwinding
disc
to
the
spool
with
the
rounded
end
to
the
bot
nd
accrding
e
off
ccc
ccc
000
0
00
With
both
hands
pull
the
thread
through
the
thread
guide
(36)
and
the
appropriate
thread
tension
(1,
2,
4,
5
and
6).
Make
sure
the
thread
stays
in
the
slot
on
the
back
thread
guide
(36).
Set
the
thread
tension
to
,,N”
and
thread
as
indi
cated.
1.
Right
overedge
looper
(pink)
2.
Left
overedge
looper
(yellow)
3.
Chainstitch
looper
(mauve)
4.
Right
needle
(green)
=
5.
Left
needle
(blue)
Note:
To
achieve
top
sewing
results
make
sure
that
the
thread
is
pulled
be
tween
the
tension
discs
when
threading.
:ed
n
is.
—
dis
13
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Threading
the
left
overedge
looper
1.
The
marking
on
the
hand
wheel
must
be
in
line
with
the
marking
on
the
hou&ng.
2.
Thread
the
left
overedge
looper
(39)
in
the
order
1
to
8.
Pull
the
thread
from
thread
guide
8
through
the
looper
eye
1
2
9
and
pull
it
a
bit
with
your
left
hand.
C
—
000
000
DOD
D
15
3.
Pull
the
end
of
the
thread
slightly
and
push
the
slider
on
the
looper
threader
(41)
to
the
left
until
it
rests
in
place.
çgtL
/
Q
4.
Pull
the
thread
a
bit
more
nd
at
the
same
time
let
the
slider
slowly
slide
back.
The
thread
is
automatically
inserted
in
guide
10.
5.
With
the
tweezers
thread
the
thread
through
thread
guide
(1
1)
and
draw
the
thread
to
the
left
under
the
sewing
foot.
The
threading
path
is
marked
in
yellow.
Note:
If
the
slider
on
the
threader
(41)
cannot
be
moved,
the
marking
on
the
hand
wheel
is
not
correctly
set.
N
,
11
7
0
16
Threading
the
chainstitch
looper
ooper(4O)
in
the
looper
is
in
the
farthest
position
to
the
right.
Il
1
antiolockwjse
so
that
the
chainstitch
zz
ID
—
17
V
/
o
4
o
/
—
,
—
Push
the
positioning
lever
(44)
of
the
chainstitch
looper
down.
This
moves
the
looper
to
the
next
position
to
the
right
and
you
can
thread
it
easily.
I
8
0
V
6
—
Draw
the
thread
through
thread
guide
7
to
thread
guide
8.
Now
pull
the
thread
through
the
looper
eye
9
and
place
it
to
the
left
under
the
sewing
foot.
Return
the
positioning
lever
(44)
of
the
chainstitch
looper
to
its
original
position.
The
threading
,
path
is
marked
in
mauve.
/
Note:
If
you
forget
to
return
the
positioning
lever
(44)
to
its
original
position,
the
/1
4870
does
not
sew
chainstitch.
/
18
Needle
threader
(accessory)
Lower
the
sewing
foot
with
the
sewing
foot
lever
(33)
and
turn
the
hand
wheel
(32)
until
the
needle
is
in
its
highest
position.
Place
the
threader
from
the
A
C
accessories
(see
page
66)
with
the
‘42)
needle
between
the
two
guide
lugs
B.
A
Draw
the
thread
through
slot
A
on
the
threader
and
hold
it
a
bit
taut.
B
1
B
,
Slowly
lower
the
threader
behind
the
needle
until
the
small
hook
C
passes
through
the
needle’s
eye.
Draw
the
thread
from
the
bottom
through
hook
D
B
and
the
thread
automatically
passes
A
behind
hook
C.
D
Draw
the
threader
back
away
from
the
!
needle’s
eye.
You
can
now
pull
the
end
of
the
thread
through
the
eye
to
thread
the
needle.
B
19
Threading
the
needles
1
Note:
When
threading
the
needles
make
sure
that
the
sewing foot
lever
(33)
is
in
II
its
highest
position.
This
automatically
2
0
0
0
0
0 0
0
0
releases
the
needle
thread
tensions
5
and
makes
it
easier
to
thread
the
needles.
000
6
7
Threading
the
overedge
needles
B
or
C
(with
or
without
needle
A)
Thread
the
overedge
needle
in
the order
1
to
8
and
draw
the
thread
through
the
needle’s
eye
9
with
the
threader.
Draw
the
thread
to
the
left
under
the
sewing
foot.
The
threading
path
is
marked
in
green
(dots).
I
1
IhL-4
I
0000000
j2
5
000
3
I
DOD
7
Threading
the
chainstitch
needle
A
Thread
the
chainstitch
needle
in
the
order
1
to
6
and
draw
the
thread
through
the
needle’s
eye
7
with
the
threader.
Draw
the
thread
to
the
left
over
the
sewing
foot.
The
threading
path
is
marked
in
blue
(triangles).
20
Threading
overedge
needles
B
and
C
(without
needle
A)
Thread
the
overedge
needles
B
and
C
in
7
the
order
1
to
8
and
draw
the
thread
through
the
needle’s
eye
9
with
the
_______________
threader.
Draw
the
thread
to
the
left
under
the
sewing
foot.
The
threading
1
1
path
for
needle
B
is
marked
in
blue
(dots)
for
needle
C
in
green
(dots).
2
2
0000000
‘5
3’
000
LJDD
67
8
o
Caution:
You
can
only
sew
with
one
or
two
—
needles
(depending
on
the
type
of
stitch).
_______________________________
Never
use
three
needles.
Changing
a
spooi
when
the
machine
is
threaded
Cut
the
threads
off
close
to
the
thread
spool
and
put
on
the
new
spools.
Tie
the
ends
of
the
old
thread
and
the
new
thread
together.
Pull
the
needle
threads
out
of
the
needles.
Lower
the
sewing
feet.
Now
pull
the
threads
through
until
the
knots
are
about
six
inches
through
the
thread
guide
before
the
needles.
Cut
the
knots
off
and
thread
the
appropriate
needles.
You
can
also
draw
the
looper
threads
straight
through
the
looper
eye
and
to
the
left
under
the
sewing
foot.
It
is
a
lot
easier
to
pull
the
looper
threads
if
you
turn
to
looper
tensions
(4,5
and
6)
to
—5.
21
Closing
the
looper
cover
When
the
machine
has
been
threaded
you
must
close
the
looper
cover
(14).
Note
The
power
to
the
machine
is
cut
off
if
the
looper
cover
is
open
i.e.
it
is
now
impossible
to
sew.
,,Close
looper
cover”
appears
in
the
display.
The
LEDs
on
the
speed
selection
also
flash.
Sewing
foot
lever
The
sewing
foot
is
raised
and
lowered
with
the
sewing
foot
lever
(33).
I
.1
22
Sewing
test
When
the
machine
has been
threaded,
you
should
sew
a
test
seam.
First
raise
the
sewing foot.
Place
a
fabric
remnant
under
the
sewing
foot
right
in
front
of
the
needle
and
lower
the
foot. With
the
threads
held
slightly
taut,
slowly
begin
to
sew. Since
the
fabric
is
automatically
fed,
you
just
need
to
guide
the
material
with
your
hands
(do
not
push
or
pull).
Note:
Make
sure
that
the
threads
inter-
loop
correctly
when
sewing
(thread
chain).
-
0
0
‘
000
\
0
0
000
000
DO
0
000
23
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