Husqvarna Huskylock 234D Owner's manual

Husqvarna
Brand
Husqvarna
Model
Huskylock 234D
Category
Sewing machines
Type
Owner's manual

Husqvarna Huskylock 234D is an easy-to-use serger that offers various stitch options for both decorative and functional sewing projects. With its 3- or 4-thread capability, you can create overlock, rolled hem, flatlock, and chainstitch seams. Suitable for various materials, from lightweight fabrics like chiffon to heavier knits, this machine ensures professional-looking finishes and helps prevent fraying. Additional features include adjustable stitch length and width, differential feed for gathering or stretching fabrics, and a built-in rolled hem attachment.

Husqvarna Huskylock 234D is an easy-to-use serger that offers various stitch options for both decorative and functional sewing projects. With its 3- or 4-thread capability, you can create overlock, rolled hem, flatlock, and chainstitch seams. Suitable for various materials, from lightweight fabrics like chiffon to heavier knits, this machine ensures professional-looking finishes and helps prevent fraying. Additional features include adjustable stitch length and width, differential feed for gathering or stretching fabrics, and a built-in rolled hem attachment.

MODEL
234D
HANDBOOK
FOR HUSKYLOCK
;,/1
s
TABLE
OF
CONTENTS
MPORTANT
SAFETY
INSTRUCTIONS”
When
using
the
sewing
machine,
basic safety
precautions
should
always
be
followed,
including
the
following.
“Read
all
instructions before
using.”
D
1LNGER
—
To
reduce
the
risk
of
electric
shock.
1.
The
sewing
machine
should
never
be
left
unattended
when
plugged
in.
Atways
unplug
this
sewing
machine
from
the
electric
outlet
immediately
after using
and
before cleaning.
?.
Always
unplug
before refamping.
Replace
bulb with
same
type
rated
15
watts.
:VARI\IING
To
reduce
the
risk
of
burns,
fire,
electric shock,
or
injury
to
persons.
Do
not
attow
to
he
used
as
a
toy.
Close
attention
is
necessary
when
the sewing
machine
is
used
by
or
near
children.
Use
this
sewing
machine
only
for
its
intended
use
as
described
in
this
manual.
Use
only
accessories
recommended
by
the
manufacturer
as
contained
in
this
manual.
Never
operate
this
sewing
machine
if
it
has
a
damaged
cord
or
plug,
ii
it
is
not
working
properly,
if
it
has
been
dropped
or
damaged,
or
dropped
into
water.
Return
the
sewing
machine
to
the
nearest
authorized
dealer
or
service
center
for
examination,
repair,
electrical
or
mechanical
adjustment.
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.
Never
drop
or
insert
any
object
into
any
opening.
Do
not
use
outdoors.
Do
not
operate
where
aerosol
(spray)
products
are
being
used
or
where
oxygen
is
being
administered.
To
disconnect,
turn
all
controls
to
the
off
position,
then
remove
plug
from
outlet.
Do
not
unplug
by
pulling
on
cord.
To
unplug,
grasp
the
plug,
not
the
cord.
J.
Keep
fingers
away
From
all
moving
parts.
Special
care
is
required
around
the
sewing
machine
needle.
1.Always
use
the
proper needle
plate.
The
wiong
plate can
cause
the
needle
to
break.
?Do
not
use
bent
needles.
3.Do
not
pu
1
i
or
push
Fabric
while
stitching.
It
may
deflect the
needle
causing
it
to
break.
t.Switch
the
sewing
machine
oil
when
making
any
adjustments
in
the
needle
area,
such
as
threading
needle,
changing
needle,
threadirj
bobbin,
or
changing
presser
foot,
and
the
like.
Alwo
unplug
the sewing
machine
from
Ihe
electrical
outlet when
removing
covers,
lubriciing,
or
when
making
any
other
servicing
adjustments
mentioned
in
the
instru’
zion
manual.
Test-sewing
11
Chaining-off
11
Ratio
Chart
of
Sewing
Material,
Thread
and
Needle
12
Thread
Tension
13
Stitch
Length
and
Stitch
Width
14
Chart
of
Thread
Tension
Adjustment
14
threads
stitch)
15—16
Chart
of
Thread
Tension
Adlcstment
13
threads
stitch)
17—18
Instruction
for
differential
feed
mechanism
19—20
Scwing
21—22
To
start
sewing
21
To
remove
the
work
21
If
threads
break during
sewing
21
To
sew
heavy
material
22
To
sew
fine
material
22
Presser
foot
pressure
22
Faultfinding
23
Stitch
Selection
24
Chart
of
threading
for
each type
of
stitch
25-26
How
louse
rolled
hemming
stitch
attachment
27-29
Oiling
30
Machine
Specification
31
Names
of
parts
and
their
functions
1
Needle
2
Turning
direction
of
motor
3
Opening and
closing
the
front
cover
3
Operating
4
Changing
light
bulb
,
‘
4
Notes
on
the
motor
5
Threading
6—il
Preparation
6
How
louse
thread
spool
cap
6
How
to
use
net
6
Threading
underlooper
7
Threading
overlooper
8
Threading
right
needle
9
Threading
left
needle
10
“.
AVE
THESE
NSTRUCTIONS”
ii’
sewing
machine
is
intended
for
houhold”
Names
of
parts
and
their
functions
T..read holder
Spool
stand
Handle
Upper
thread tension
dial
Pressure
for
left
needle
adjustment
screw
Reel
pm
-.
____
Upper
thread
•
---
—
tension
dial
for
right
needle
Reel
support
Presser
foot
lifting
lever
Thread
take-up
Pulley
Needle
—-
-
Upper blade
--
I
-
__—
Lower
thread
tension
dial
Presser
foot
for
Underlooper
Lower
thread
\
tension
dial
Material
plate
cover
\
for
Overlooper
Front
cover
Material
slide
plate
4
TE
xl
(#11
&
#14),
DR
xl
(#9,
1,
14),
DR
x
1KN
#11,
1738
or
16
x
2
R
can
used
on
these
machines.
TE
x
1
(#14)
is
mounted
on
the
machines.
NOTE:
It
is
recommendable
to
used
the
golden
needle
(DR
x
1
KN#
(U
in
I
ac:cessory
when
sewing
knitted
garments.
To
remove
the
needle
(1)
Turn
the
hand
wheel
cloc
wise
by
hand
until
the
need
_______
is
in
its
highest
position.
(2)
oosen
the
needle
set
scre
with
the
hexagonal
wrenc
and
remove
the
needle.
NOTE:
When
removing the
needle
hold
the
needle
with
the
tweez
ers
to
avoid
dropping
it.
To
insert
the
needle
(1)
1
urn
the
hand
wheel
until
the
needle
bar
is
in
its
highest
position.
(2)
[told
the
needle
with
its
long
grooved
side
to
the
front
and
insert
ii
as
far
as
the
needle
stop.
(3)
lighten
the
needle
set
screw
securely,
taking
care
that
the
needle
is
set
in
the correct
position.
Needle
Needle
set
Needle
bar
screw
Long
grooved
fi
wrench
Hexagonal
toward
you
—1—
—
Turning
direction
of
motor
Operation
When
the
pedal
is
lightly
depressed,
the machine runs
at
low
speed
and
as
it
is
depressed
further,
the
machine
will
increase
speed.
When
the
pedal
is
released, the machine
will
stop.
Changing
the
light
bulb
Undo the
two
upper
screis
on
the
back
of
the
machine
as
illustraled,
remove
the
cover and
screw
the
light
bulb
out.
Insert
the
new
bulb
and screw
the
cover
in
place.
Use
15
W
light
bulbs
as
indicated
:
on
the
lamp
holder.
4
Thc
motor
of
this
machine
turns
in
a
clockwise
direction
(direction
of
arrow)
as
opposed
to
the
anti-
clockwise
direction
of
an
ordinary
domestic
sewing
machine.
Pulley
Opening
and
closing
the
front
cover
Operating
Preparation
*lnsert
the
three-pin
plug
into
the
socket of
the
motbr
and
insert
the
supply
plug
into
the
power
outlet.
When
threading,
it
is
necessary
to
open
the
front
cover.
Note:
When sewing,
ensure
that
the
front
cover
is
closed.
—
[__ootcontro]
To
open
the
front
cover
Move
the
knob
on
the
front
cover
in
the
direction
of
the
arrow
and
pull
it
open.
To
close
the
front
cover
Push
the
front
cover
on
by
hand
as
illustrated
here.
\
Screw
J
Light
switch
POLARIZED
PLUG
THIS
PRODUCT
IS
EQUIPPED
WITH
A
POLARIZED
ALTERNA1-
ING
CURRENT
LINE
PLUG
(A
PLUG
HAVING
ONE
BLADE
WIDEI.
THAN
THE
OTHER).
THIS
PLUG
WILL
FIT INTO
THE
POWER
OUTLET
ONLY
ONE
WAY.
THIS
IS
A
SAFETY
FEATURE.
lF
YOU
ARE UNABLE
TO
INSERT
THE
PLUG
FULLY
INTO.
THE
OUTLET,
TRY
REVERSING
THE
PLUG.
IF
THE
PLUG SHOULD
STILL
FAIL
TO
FIT,
CONTACT
AN
ELECTRICIAN
TO
REPLACE
THE
OBSOLETE
OUTLET.
DO
NOT
DEFEAT
THE
SAFETY
PURPOSE
OF THE
POLARIZED
PLUG.
—3--
Notes
on
the
motor
*
The normal
operating
speed
of
this
sewing
machine
is
1,500 stitches
per
minute,
which
is
quite
fast
compared
to
the
normal
operating
speed
of
300
to
800
stitches
per
minute
for
the
ordinary
foot-operated
sewing
machine.
It
should
be
noted
that
the
motor
of
this sewing
machine
turns
in
the
opposite
direction
to
the
motor
in
an
ordinary
sewing
machine.
ThrincE.
Preparation
Raise
the spool
pin
right up
and
set
ii
by
the
positioning stopper
at
rhe
join
the
upper
and
lower
sections
of
the pin.
Make
sure
that
the
thread
holders
right above the
reel
support.
nj
_
Reeln
__
How
to
use
thread
spool
cap
When
you
use
a
wooden
thread
reel, use
the
thread
spool
cap
as
illustrated
to
the
right.
How
to
use net
II
you
are
sewing
with
loosely-
spun
nylon
thread
we
recommend
that you
cover
the
spool
with
the
net
supplied
to
prevent
the
thread
Irom
slipping oil the
spoo
1
.
Adapt
the net
to
the
shape
ol
the
spool,
see
illustration.
Ensure that
each
thread
runs
be
tween
the
two
thread
tension
discs.
*
The bearings
in
the
motor
are
made
of
a
special,
sintered
oil-impregnated
alloy
mounted
in
oil-soaked
felt
to
withstand
long
hours
of
continuous operation.
*
Continuous
operation
of
the
sewing
machine
will
heat
the
motor
and
foot
control
a
little, but
not
enough
to
adversely
affect
its
performance.
The
motor
and
foot control
are
equipped
with
ventilating
holes,
which
must
not
be
covered
with
cloth
or
paper
during
use.
*
When
the
motor
is
running,
sparks
can
be
seen
through
the
ventilating
hole
in
-.
the
motor
bracket
on
the
side
opposite
the
pulley.
These
sparks
are
produced
by
the
carbon
brushes
and
the
commutator,
and
are
of
no
significance.
CAUTION
WHEN
THREADING,
REPLACING
NEEDLE,
OR
WHEN
MACHINE
IS
NOT
IN
USE,
IT
IS
RECOMMENDED
THAT
THE
ELECTRIC
SUPPLY PLUG
IS
DISCONNECTED
TO
AVOID
ANY
POSSIBLE
HAZARDS.
Thread
holder
0
‘X
L
I[
1
1.
jNet
:“:
:::,:
L
[
L
NOTE:
Thread
hread
tension
discs
—5—
—6
Threading
overlooper
ireading
underlooper
T
-
--
ZE1_
o
a
/
I
Pull
the
thread
about
15
cm
(6½
inch)
NOTE
If
overlooper
thread
breaks
dur
ing
sewing.
.
..
Before
re-threading
the
under-,
looper,
cut and
remove
thread
from
both
of
the
needles:
Then
re-thread
the underlooper.
Make
sure
that
re-threading
is
done
exactly
as
diagrammed
above.
The
machine
will
not
oper
ate
properly
if
threading
is
not
accurate.
Also,
be
sure
thread
is
inbetween
the
tension
disc.
This
can
cause
the
breakage
of
thread.
un
the
thredd
in
the
SeqUenCe
ii
Iustr
.i
ted.
*
Run
the
thread
in
the sequence
illustrated.
from
the
ZJ_LO
0D
o
0
0
(01108
%0
Pull
the
thread
about
-
15
cm
(6’/8
inch)
from
the
looper.
-
o’
J
q0
[cou
Thread tension
diks
NOTE
If
underlooper
thread
breaks
dur
ing
sewing.
This
may
be caused
by
the
under-
looper
thread
getting
caught
on
the
overlooper.
If
this
happens,
lower
the
overlooper
by
turning
the
pulley,
remove
the
underloop
er
thread
from
overlooper
and
re-thread
the
overlooper.
zI
—it-
L
CAUTION
Thread
the
needles
after
threading
of
underlooper
and
over-
looper.
Threading
right needle
*Run
the
thread
in
the
sequence
iUustrated.
/
/
I_10
L1D
0
0
0
0J
r1\
0080
Threading
left
needle
Run
the
thread
in
the
sequence
iIlustracd.
r
oc.
occ
010
8%Q
00
afl
9—
-
10
-
z
•o
c
D
—
—
—
D
.
—
C
1E
‘D
s_
—“
-..
=D
—D
—--
•c
—
(
—.c
“r
=—
---
—c
--.-
(
•
G
3c
Z
p
—
<
r
—
D
—
U,
—
<
——
-
e
D
(__
.-<
-—
—
r’
;•U
.-.D
—
—
.
2.
z
—_
a
—.
.
=.
-
—
<3
—
C
—c
—.
C
—
—
—.
3
<<
-
—
<
—(
—.
—
—r
—.
3__
(t
‘J’
n•”
rt
U,
-
.
<
—
n
——.
-
.
*
-l
CD
C’,
U)
CD
0
-.‘Q,
CD
cn
a-CD
CD
-‘
.D)
Materials
Stitch
Sewing
pitch
(mm)
Thread
Needle
Crepe
de
Chine
I
U
x
1
Georgette
Spun
#80
(#11)
Light
Lawn
Overlock
stitch
2.0-3.0
Cotton:
#80-100
08
1
matena)
Silk
:
#80.100
(#9
or
#11)
Organdie
I
Tricot
j
I
÷
I
Needle
thread
-
Tetron
:
#80
TE
x
1
Crepe
de
Chine
Nylon
:
#80
(#11)
Light
Georgette
Narrow/Rolled
Smaller
than 2.0
Looper
thread
material
Lawn
hemming
stitch
Tetron
:
#80
08
x
1
(#9
or
#11)
Organdie
[
Nylon
:
#80
Wooly
nyron thread
Poplin
Spun
:
#60.80
TE
x
1
Gingham
Cotton:
#60.80
(#11
or
#14)
Medium
Seersucker
08
x
1
Overlock
stitch
2.5-3.5
.
Silk
:
#50.80
or
#14)
material
Gabardine
Nylon
:
#50.80
DBxl
KN
Serge
Tetron:
#50.80
Knitted
(#11)
Cashmere
Heavy
Tweed
..
Overlock
stitch
3.0-4.0
material
Denim
-
J
ersey
Cotton
#40.60
Silk
:
#40.60
Tetron
:
#30-60
Nylon
:
#30.60
TExt
(#14)
DB
x
1
(#14)
Thread
Tension
Thread
tension
dial
Upper
thread
tension
dial
Upper
thread
tension
dial
r/”
for
right
needle
for
left
needle
/7
V
/
‘
(red)
(
(orangel
(!‘
‘
..)
.—
___________—
N
Lower
thread
Lower
thread
tension
dial
—
tension
dial
[Eover
OP
control
Sé’vying
is
possible
at
posilion
‘4”
under
almost
any
circumstances.
If
you
find
it:irppossible,
adjust according
to
the
drawing
below.
/l(i)
V
B
c
for
heavy
use
for
medium
use
(Standard:
Nylon
spun
No.60)
‘The
thread
tension
of
this
machine
can
be
adjusted
by
four
thread tension
adjustment
dials of
the
two
needle
threads,
overlooper
thread
and
under-
looper
thread.
The
correct
thread
tension
varies
with
the
type
of
fabric,
the
thickness
of
thread
etc.
Adjust the
thread
tension
as
required
for
each
particular
case. Turning
the
dials
clockwise
increases
the
tension
and
turning
counterclockwise
slackens
it.
Adjusting
the
thread
tension
(1)
V
Select
the
correct
tension,
refer
to
above
illustration.
().
If
you
cannot
find
the
correct
tension,
refer
to
the
illustrations
“CHART
OF
THREAD
TENSION
ADIUSTMENT”
on
following
pages.
Stitch
Length
d
Stitch
VJidt
Stitch
length
N
Stitch
adjustment
lever
Stitch width
The
size
of bight
can
be
adjusted
as
follows:
When
you
change
the
st.ch
le
open
the
material plate
cciver.
I
the
adjustment
lever
and
st
the
to
the
proper
position,
th
ri
rais
adjustment
lever
up.
You
can
adjust
the
stitch
length
minimum
2
mm
(1/8
inch)
to
maxir
5
mm
(1/4
inch).
To
adjust
cutting
line:
(1)
Open
the
front
cover.
(2)
Move
the
upper
blade
on
the
r
and
turn
in
arrow
direction unt
is
locked
keeping
it
pushed.
(3)
Loosen
the
set
screw
for
the
lo
blade
holder.
(4)
Move
the
lower
blade
holder
to
left or
to
the
right.
*
If
the
lower
blade
holder
is
moved
the
left,
the
distance between
needle
position
and
cutting
line
v
be
less.
If
the
lower
blade
holder
is
moved
the
right,
the
distance
will
increase.
(5)
Tighten
the
set
screw.
Upper
blade
©.
.
for
light
use
I
Screw
)
Lower
holder
-
13
-
14
—
(ase
tied,’,),
)fl’f
thread
pt
linden,
,,,,,,
ll,re.,d
vet
Irnopin
nrr’aij
ii,
‘ad
I(tOpCF
‘ii
Fahrk
puckers
Chart
of
Thread
Tension
Adjustment
For
4
threads
Stitch
lelt
needle
thread
is
slack.
%
/
\)•
Tighten
left
needle
thread.
(orange)
Tighten
right
needle
thread.
(red)
Slacken
left
needle
thread.
(orange)
Right
needle
thread
is
slack.
Left
needle
thread
is
tight
thread
is
tight.
Slacken right
needle
thread
)red)
Correct
thread
tension
©©
1
©©
()
1c©
©©
-1
©
©©
1
©©
Overlooper thread
is
tight.
Underlooper
thread
is
slack.
Overlooper thread
is
clark.
t
1*
/
‘I
IL
Slacken
overlooper
thread
(green)
Tighten
underlooper
thread
(blue)
Tighten
overlooper
thread
(green)
Slat
ken
underlooper
thread
(blue>
T
gb
ten
underlooper
thread
(blue>
Under)oopen
thread
is
tight.
NOTE
Order
of
thread
tension
adjust
ment
When
you
adjust the thread
tension,
do
it
in
the
following
order;
1)
Left
needle
thread
2)
Right
needle
thread
3)
Overlooper
thread
4)
Underlooper
thread
This
is
the
easiest
way
to
ctain
correct
thread
tension.
Tighten
overlooper
Ilnrad
(green)
—
16
—
aiaIdU
ienson
Adjustment
For
3
threads
Stitch
o
his
case...
Needle
thread
Urrderlooper
thread
Reverse
Surlae
Underlooper
thread
Reverse
Overlooper
Unclerlooper
thread
Reverse
vertooper
)tieci
teethe
IN
id
torange)
Slat
ken
needle
thnad
(orange)
Needle
thread
is
slack.
Fabric
puckers
-
-
Ovcrlooper
thread
is
tiliI,
-.5.
Slat
1<
en
nverkuper
thread
green)
Correct
bread
tension
Underlooper
thread
is
stack.
Needle
thread
is
tight.
Underlooper
thread
is
tight
Tighten
underlooper
thread
(blue)
(t
Overlooper thread
is
slack.
1
©)©
1\.
X)
1
\
.
U
-
18
I
ighlen
overlot per
thread
(green)
NOTE
In
case
you
use
right
needle
for
3
mm
3
thread
stitch,
please
turn
upper.
right
dial
(red).
IL
—
17
—
Slac
ken
urrder)ooper
thread
(blue)
I
ighlen
overloojser
thread
)greerrI
I
ghr(eir
sinderlooper
thread
(blue)
Instruction
for
differential feed
‘mechanism
(1)
Open
cloth plate
cover.
(2)
Loosen
Iced
ratio adjusting
lever.
(3)
Adjust
feed
ratio
as
required.
(4)
Fasten
adjusting
lever.
(5)
Close
cloth
plate
cover.
NOTE:
What
is
“differential
feed
ra
110”
.
It
is
ratio
of
differential
feeding
power
(adjustable)
to
main
feeding
power
(fixed).
It
is
adjustable
between
0.7
and 2.0.
Prevent
elastic
materials from
stretching.
or
Puckering.
j
7
L%
With
normal
feed
the
edge
of
the
elastic
materials
will
be
wavy
To
correct, adjust
the
feed
ratio
between
1.0
and
2.0.
(Feed
ratio
depends
on
elasticity
of
materials.)
Caution
In
case
you
sew
with
thick
materials
which
is
not
elastic
such
s
denim,
do
not
work
differential
feed
so as
not
to damage
materials.
w
to
adjust
differential
Iced
ratio.
*
An
example requiring
adjustment.
d
ratio
Main
feed
F,
Differential Effect
Application
:
.
Prevent
thin
7—1.0
aigfrom
1
0
)
cz
Without
differ-
Normal
‘
“
ential
feed. sewing.
0
2
.0
Materials
to
be
gathered.
-.
w
-
—
20
—
Sewing
Place
the material
well
under
neath
the
presser
loot
before
starting
to
sew.
Slowly
sew
a
(ew
stitches
by
turning
the
pul
ley
by
hand.
The
material
will
be
fed
automa
tically.
You
need
only
guide
it
in
the
required direction.
When
the
seam
is
finished,
keep
the
machine
running
at
low
speed
to
obtain
chaining-
oil.
Then
cut
the
stitches
5
cm
(2
inches)
from
the
work.
11
feeding
for
chaining-off
is
not
enough,
pull
the
thread
gently.
Remove
the material and
rethread
correctly.
Replace
the
material
under
the
presser
loot
and
sew
3—5
cm
(l¼—2
inches)
over the previous stitches.
Caution
Do
not
use
straight pins
in
fabric
when
sewing.
They
will
destroy
the
nee
dles
and
blades.
*
Place
the
material
ouch
the
presser
foot
until
it
the
front
oF
upper
[hen,
start
sewing.
*
Do
not
itt
the
presse,
while sewing.
(1)
Adjust
the
pressure
to
prevent
material
from
puckering
and
to
faci.
sewing
curves.
(2)
Slacken
the
thread
tension,
but
remember
that
if
the
tension
is
too
this
may
cause
the
thread
of
break and
skip
stitches.
(3)
Blunt
blades
will
not
cut
a
clean
seam,
and
also
cause
the
fabric
to
puc
*
The
pressure
of
the
presser
I
can
be
adjusted
by
turning
pressure
adjustment
screw.
Sir
this
machine
has
already
bt
adjusted
to
a
pressure
suital
to
light and
medium-fabrics,
further adjustment
is
necessa
except
when
sewing
very
hea’
or
very
light
materials.
Usual)
when sewing
very
light
material
the
presser
foot
pressure
shool
______________
be
slack and
when
sewing
ver
heavy
materials,
it
should
h
ugh
t.
To
sew
heavy
material
To
st:r
t
sewing
•
.
•
_‘>__<.—..
mi.,
To
remove
the
work
If
threads
break
during
sewing
To
sew
fine
material
Presser
foot
pressure
-
21
-
-
Pressure
adjustment
screw
pressure
preSSWe
Pressure
adjustment
screw
15
mm
1
{/8
inchL
______________
-
(Standard
height
for
medium
material)
—
22
Cause
Presser
loot
pressure
too
weak.
1
Needles
herr
t,
01
needle
tip
blunt
2.
Needles
incor
rectl’
7
lit
ted
3.
Material
pulled
forcibly.
1.
trnprojrer
threading.
2.
I
hrread
tangled.
3.
thread
tension
too
tight.
4.
Needles
incorrectly
fitted.
5.
Wrong
needle
used.
1
Needle
bent,
or
needle
tip
blunt.
2.
Needle
incorrectly
fitted.
3.
Wrong
needle used.
4.
Improper
threading.
5.
Presser
loot
pressure
too
weak.
Thread
tensions
not
adjusted
properly.
1
.
Thread
tension
too
tight.
Remedy
1
urn
pressure
adjustment
screw
clock
wise
to
increase
presser
foot
pressure.
Replace
with
new
needle.
Fit
needles
correctly.
(See
page
2.)
Do
not
press
or
pull
material
too
hard
when sewing.
Thread
correctly.
15cc
pages
6—
It),
25—26.)
Chock spool pin,
thread
holders,
etc.
and remove tangled
thread.
See pages
13—t8
“thread
tension”.
Fit
needles
correctly.
(See
page
2.)
Use
correct
needle
TEX1
(DBX1)
____
Replace
with new
needle.
Fit needle
correctly.
(See
page
2.)
Use
(orrect needle
TEX1(DBX1)
_________
-
1
bread
correctly.
(See
pages
6—ill,
25—26.)
Turn
pressure
adjustment
screw
clock
wise
to
increase
presser_foot_pressure.
See
pages
13—lt1
“Thread
tension”.
Decrease
thread tension
when
sewing
lightweight
or
fine
material.
(See
pages
13—ill.)
Stitch selection
1.
Four-thread
overlock
stitch
Use
all
the
four
threads
and
two
needles
for
producing
four-thread
overlock
stitches,
which
will
neatly
fit
all
kinds
of
materials, especially
knitted
ones.
Use:
Ideal
for
sewing
knitted
gar
merits.
2.
Three-thread
overlock
stitch
(5
mm/
1
/4
inch)
Use
three threads
and
left
needle,
producing
5
nim
seams,
which,will
fit
all
kinds
of
materials.
Use:
For
overlock.
stitching
and sew
ing
suits,
blouses,
slacks,
etc.
Note:
Take
off
right
needle
when
sew
ing
this
overlock
stitch.
.
3.
Three-thread
overlock
.
stitch
(3
mm/
3
/16
inch)
..
Use
three
threads
and
right
needle,
producing
2.8
1
.mrn,
—.
(
3
A6
inch)
seams.
..
Note:
Take
off
left
needle
when
sew-,,
ing
this
overlock sitctch.
Use
three
threads
and
left
needle.
with
rolled
hemming
stitch
attach-..
ment,
producing
narrow
hemming
stitch.
Fault-finding
Ins
sewing
machine
is
designed
lot
trouble-free operation.
I
lowcvcr
the
following
iart
indicates
faults
htch
may
deselop
rn
the
absence
of
basic
adjustments.
This
sewing
machine
can form
five
kinds
of
stitches
in
simple
steçisas
follows;
Fr
oub
Ic
Does
not
Needles
break.
1
breads
break.
Skipped
stitches.
titches
not
mi
form.
abric
u
c
ke
red.
2.
Improper
threading
1
bread
correctly.
or
thread tangled.
(See
pages
6—ill,
25—26.)
—
23
4.
Narrow
hemming
stitch
L
5.
Rolled
hemming
stitch
Use two
threads
and
left
needle
with
rolled
hemming
stitch
attachment,
producing
rolled
hemming stitch.
24
—
Chart
of
threading
for
each
type
of
stitch
4.
Rolled
hemming
stitch
=L
LL
:zu
‘—
—
-—
I1H
0
oJ
ot:J
o
:
88
1
8
So
Pull
the
thread about
15
cm
(6½
inch)
from
the looper.
Close
Li’
•Three-thread
narrow overlock stitch
•
Two-thread
rolled
hemming
stitch
In
these
cases, remove
right
needle
and
set
narrow/rolled
hemn
attachments
(Needle
plate
and
presser
toot).
Refer
to
page
27
-
1.
Four-thread
overlock
stitch
L1
IfJ
88
—-
o’
b
o
00
008
0
Pull
the
thread
about
—
—
15
cm
(6½
inch)
from
the
looper,
0
D
‘IL’’
‘
3.
Three-thread
overlock
stitch
I
(3
mm/
3
/is
inch)
_
E*
L
0
111
0
Pull
the
thread
about
-.
15
cm
16½
inch)
from
the looper.
00
2.
Three-thread
overlock
stitch
(5
mmI
1
/4
inch)
and
Narrow
overlock
stitch
L8G8
Pull
the
thread
about
—
15
cm
16½
inch)
from
the
,
0
O_J
-
-•1’
[J
—z
J
Open
Note:
Following
stitches
can
be
sewn
by
left
needle.
—
—
Exchange
the
overloc
k
stit
h
presser
foot.
(1)
Raise
the
presser
loot
lilting
ev
er.
(21
Set
the
needle
to
its
highest
position
by
turning
the
pulley.
(3)
Push
the
button
(noted
by
arrow).
(4)
Rçmove
the
presser
foot
by
turn
ing
as
illustrated
and
remove
from
back.
NOTE:
Remove the
right
needle
and
pro
ceed.
Remove
present
needle
plate
and
replace
with
rolled hemming
plate.
o
acst
sewing
pitch
InjJ
—
•strnelt
)ev2r
(C)
When
applying rolled
hemming
presser
toot,
make
certain
that
the
spring
on
loot
is
placed
directly
in
front of
the
round
bar
of
the
presser
loot
holder.
NOTE:
In
case
the
narrow
hemming
loot
does
not
snap
on
the
presser
foot
holder,
just
push down
on
the
rear
side
of
presser
foot
holder.
Use
the
adjustment
lever
to
adjust
the
sewing
pitch
to
the
extent
from
1
mm
‘ii
inch)
to
2
mm
(½
inch)
as
shown
in
(lust
ration
How
to use
rolled
hemming
stitch
attachment
sing
rolled
henirning
shitch
attachment,
you
can
obtain
fine
rolled
hemming
narrow
hemming
stit(
h.
1
hose
shit
hes are
useful
to
decorate
rt
baby
dress
handkerchief
etc.
lu
use
the
altac
hment,
follow
the
instructions
below.
..LED
HEMMING
STITCH
ATTACHMENT
Rolled
hemrnin
‘
stitch
attach
necdle
plate.
of
presser
loot
and
oiled
hemming
stitch
Rolled
hemming
stitch
esser
toot) needle
plate)
To
fix
rolled
hemming
attachment
3.
To
change
the thread
When
using
certain
materials
with
the
roiled
hemming
and
narrow
hemming
stitch,
it
is
recommended
to
change
the
thread
as
per
thefoIlowing
chart.
Material
Thread
Type
Sewing
Pitch
Bight
Size
Needle
Size
Ceorgette
(Upper
Thread)
Less
than
2
mm
3.5
mm
II
x
1
(#
ii)
Rayon
Tetron
Thread
I
½
inch)
I
V’.
mnchl
or
Linen/Cotton
or Nylon
Thread
#80
1)t(
x
t
I
#0)
Broad
cloth
(tower
Thread)
Tetron
Thread
or Nylon
Thread
#80
Set
the
threads
as
per
page
25/26
No.
2
or
4
It
is
recommendable
to
adjust
thread
tensions
[Al
For
ROLLED
HEMMING
STITCH
Underlooper
thread
tension
at
#6—8
Left
needle
thread
at
#4
(
according
to
the
stitch.
as
follows:
NOTE:
Depending
on
materials/threads, thread
tension
may
vary
slightly.
[B]
For
NARROW HEMMING
STITCH
All
thread
tensions
at
4
NOTE:
Depending
on
materials/threads, thread
tension
may
vary
slightly
(REMARK)
Do
not
raise
presser
foot
lifting
lever
or
pull
material
slrongly
during
sewing
in
order
to avoid
bending
the
finger
of
needle
plate.
4.
Proper
sewing
seam
for
rolled
hemming and
narrow hemming stitch
Sewing
Pitch
About
1
mm
(1/32
inch)
(Rol)ed
hemming
(‘/i
6
inch)
Nstih)
Stitch
Width
About
1.5
mm
(Surface)
More
than
3
(/16
inch)
Overlock
Stitch//
More
than
2
mrn/
(1/8
inch)
The
end
of
material
is
bent and hidden.
The
end
of
material
remains
to
come
out.
Sewing
Pitch
About
1
mm
:
(½2
inch)
NN
(Narrow
hemming
N..
stitch>
Stitch
Width
‘N
About
1.5
mmr
(1/
inch)
(Surface)
4&\
More
than
3
mjs
More
than
2
mm
(½
inch)
Over)ock
Stitch
The
end
of
material
is
bent
and
hidden.
The
end
of
material
remains
to
come
out.
—
20
-
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Husqvarna Huskylock 234D Owner's manual

Husqvarna
Brand
Husqvarna
Model
Huskylock 234D
Category
Sewing machines
Type
Owner's manual

Husqvarna Huskylock 234D is an easy-to-use serger that offers various stitch options for both decorative and functional sewing projects. With its 3- or 4-thread capability, you can create overlock, rolled hem, flatlock, and chainstitch seams. Suitable for various materials, from lightweight fabrics like chiffon to heavier knits, this machine ensures professional-looking finishes and helps prevent fraying. Additional features include adjustable stitch length and width, differential feed for gathering or stretching fabrics, and a built-in rolled hem attachment.

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