Global WF 955 Parts list manual

GLOBAL
WF955
Instruction & parts Manual
www.globalsew.com
[email protected]

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

CONTENTS
I. PRECAUTIONS BEFORE STARTlNG OP ERA TION .. .. . .. . .. .... ... .. ....... .. .... ..................... .. . .. .... .2
2. MAIN SPECIFICATIONS ... ........... ....... .. ...... ................................. .. ............. .. .... ..... .... .. ..2
3. PREPARATION AND LUBRICATION ........................................... . ........................ .. .3
4. REPLACE NEEDLES .. . .. .. ............... .. .. ........................................... . .. .... ............... ........3
S.
WlNDING ., ... .... .. ......... .. ........ .. .... .. ............ .. ............. ............... .. ............ .... .. ....... .. . .. ..4
6.
WINDING ADJUSTMEN T....... .. ....... ... .. .. .. ...... ... .... ... .. . .. .... .... .. ....... .. .. ............. .. ......... .. 4
7.
REMOVING AND INSERTING THE BOBBIN ...................... .. ... .. ......... .. .. .. ... .. ..... .......... .. .4
8. THREADING ........... .. . .......... ........................................................... .. .. .. .. ....... .. ... ........5
9. REGULATING THE THREAD TENSIONS .... . .. . .. . .. ......... .. ........... ... ............... ........ . .. ...........5
10 . ADJUSTMENT OF THE PRESSURE ON THE MATERIAL .........,....... ............... .. .... . .. ... .. ...... .. 6
l l.
ADJUSTING THE LIFT OF THE AL TERNATING PRESSER FEET ... ...... .. .. .... . .. .. .... .. .. ........ .. .. ...6
12. STITCH LENGTH ADJUSTMENTS AND REVERSlNG LEVER ........... .. ...................................6
13 . ADJUSTING THE HEIGHT OF THE FEED DOG ....................... .. .... .. .... .. .. ........ .. ... . .. ... ........6
14 . RELATIVE POSITION OF THE FEED DOG TO NEEDLE PLATE ....................... .. .. .. ... .......... .. .7
15. THE POSITION OF THE NEEDLE AND THE NEEDLE HOLE OF THE FEED DOG .. ...... . .. .... .. .. .. ...7
16 . TIMING THE NEEDLE WITH FEED DOG ....... .. .. .. ................... ... ......... ..... . .. . .. .... .. .... ... .. ... .. 7
17 . ADJUSTING THE HEIGHT OF THE NEEDLE BAR .............. .. .................... .. ........ .. ........... .. ... 8
18. TIMING BElWEEN THE HOOK AND THE NEEDLE ........ .. ........... .. .. .............. .. ....... .. ........ .. 8
19 . ADJUSTING THE HEIGHT OF THE PRESSER FEET .................. ................ .. ........ .. ..............8
20 . TIMING OF THE VIBRATING PRESSER FOOT ......... .. ......................... .. .. .. ............... .. ...... .. 9
21 . ADJUSTMENT OF THE CLEARANCE BElWEEN FEED FORKED CONNECTION AND FEED FORK
COLLAR .. .. .. ......................... ...... .... .. ... ............. ... ................. .. .. .. ..... .. .. ......... .. .. .......9
22. ADJUSTING TIIB TIIREAD CONTROLLER SPRING ................ .. .. ..................... .. ...... .. . .. .... .. 9
- 1 -
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1.
PRECAUTIONS
BEFORE
STARTING
OPERATION
l)
Safety
Precautions:
(
1)
When
turning
the
power
on,
keep
your
hands
and
fingers
away
from
the
area
around/under
the
needle
and
the
area
around
the
balance
wheel.
(2)
Power
must
be
turned
off
when
the
machine
is
not
in
use
,
or
when
the
operator
leaves
the
seat
(3)
Power
must
be
turned
off
when
tilting
the
machine
head,
insta11ing
or
reimving
the
"V"
belt,
adjusting
the
machine
,
or
when
replacing
.
(4)
Avoid
placing
fingers,
hairs,
bars
etc
.,
near
the
balance
wheel,
"V"
belt,
bobbin
winder
balance
wheel,
.
or
imtor
when
the
machine
is
in
operation
.
(S)
Do
not
insert
fingers
into
the
thread
take
-
up
cover,
under/around
the
needle,
or
balance
wheel
when
the
machine
is
in
operation
.
(
6)
If a
belt
cover
,
finger
guard
,
eye
guard
are
installed,
do
not
operate
the
machine
without
these
safety
devices
.
2)
Precautions before Starting
Operation:
(I) If
the
machine's
oil
pan
has
an
oil
SUl11)
,
never
operate
the
machine
before
filling
it.
(2)
If
the
machine
is
lubricated
by
a
drop
oiler,
never
operate
the
machine
before
lubricating.
(3)
When
a
new
sewing
machine
is
first
turned
on
,
ver
i
fy
the
rotational
direction
of
the
balance
wheel
with
the
power
on.
(The
balance
wheel
should
rotate
counter-clockwise
when
viewed
from
the
balance
wheel)
(41
Verif
y
the
voltage
and
(single
or
three)
phase
with
those
given
on
lhe
machine
namep
l
ate.
3)
Precautions for Operating Conditions:
(
I)
Avoid
using
the
machine
at
abnormally
high
temperature
os·c
or
higher)
or
low
temperature
(
s·c
or
lower>
(2)
Avoid
us
ing
the
machine
in
dusty
conditions
.
2.
MAIN
SPECIFICATIONS
Item
WF
955
Max
.
Sewing
Speed
;,W()()
l'llln
Stitch
Length
()
10
nun
Take-up
Lever
St
roke
71.
f>
111111
Needle
Bar
Stroke
:lfi
111111
Height
of
Between
Main
:
Hi
111111
and
Sub
Presser
Foot
Presser
fool
By
Hand
Hmm
lift
By
Knee
11111111
Needle
Ill'
1/.
17
22;:t
2'1U
Rotating
Hook
Double
Capaci
ty
Hook
Lubrication
Manua
l
Motor
3
70W
Clu
tch
Motor
-2-
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3. PREPARATION AND LUBRI CA TION
1) Cleaning the machine
Be for e le av ing the fa ctory, the m ac hi ne pans are coa t ed wi th rust- p reventive grease, w hi ch m ay be
hardened a nd contaminated by du st durin g sto ra ge and s hipm e nt . T hi s gr ease must be rem ove d wi th
gasoline.
2) Examination
Though ev ery m ac hin e is confirmed by s trict in s pe c tion a nd t es t befor e lea v in g th e fact or y, the
machine · parts may be loos e or de form ed aft er lon g distan ce tr ansportation with jolt. A thorough
examination mu st be perform ed aft er cle an ing th e ma chine. T urn th e balanc e wh ee l to sec if th e re is
running obslrt1 c t10n , parts collis ion , un eve n r es istan ce or abno r mal noi se. If th ese ex ist , adjustm e nt niu st be
made accordin gly before nm - in operati on.
3) Oiling (Fig.I , 2, 3, 4)
Pleas e do not op erate the m ac hin e b efo re lubr ic atin g well. Th e points with arrow in th e fig ar e oil
position s.
Caution: Pleas e use white s pindle oil.
Fig .I
0
Fi g.2
Lubrication of rotating hook (F i g.4)
Add th e oil from the oil hol e l lmitl to th e pos iti on 2.
Adjusting th e lubrication (fig.4)
F
L__J ,.,rira _,.'ii, r.l..!l '-,...,- .,,. .,., 2
Fig .3
4
~~ , .......... .
~I@\
De crease lno ru ,c
5
Fig .4
Oil adjusting sc r ew 3 c an adju st th e lu brication of th e rota tm g hook: Tum oil - adjustin g sc r ew 3 clockwi se
to increase oil and tum oil-adjusting s crew 3 counte r-c l oc kwis e to d ec rea se o il.
4. REPLACE NEEDLES (Fig.5)
1) Tum the balance wheel to lift ne edl e bar l to th e upper e nd of its strok e.
-3 -
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2)
L
oos
en
ne
edl
e clamp
screw
2.
Wh
jle
keeptn
_g
.the long
gro
o
ve
of the n
ee
dle
l
ef
t
wa
rd
fu
ll
y inse
rt
th
e
ne
e
dl
e shank
up
to
th
e
bott
omof
th
e need
le
soc
ke
t.
Ca
ution
:
Th
e
di
rection of the long groove sho
uld
he lef
t.
3)
Th
en
ti
g
ht
en n
ee
dl
e clamp screw
2.
5.
WIND
ING
(F
i
g.6)
I) P
ut
th
e
bo
b
bin
3
on
the b
obb
in w
ind
er sha
ft
as
fa
r
as
it
wi
ll
go.
2)
Br
in
g the thrcaa
10
r
wa
rd
tow
ard
th
e boobin
and
w
ind
from
be
l
ow
in
clo
ckwise dir
ec
tion
seve
ral
time
s aro
und
the
bobbin.
4)
Pu
sh
th
e lever 4
tow
a
rd
other s
id
e so
th
at
th
e winding wh
ee
l
an
d
--
v
..
be
lt
wi
ll
engage and
th
en sta
rt
th
e m
ac
hin
e.
5)
The win
din
g wh
eel
w
ill
a
ut
oma
ti
c
all
y
be
free
fr
om "V" be
lt
an
d sl
op
a
ft
er
th
e bo
bbin
is
fill
ed w
ith
th
re
ad
.
6.
WI
N
DI
NG
ADJ
UST
ME
NT
(Fig.6)
I
I
When
th
e
wo
und
t
hr
ead
laver d
ocs
not pre
se
nt
a
cv
lindric
al
sl
rnpc
. l
oose
n
set
se
re\\'
5
of bo
bbin
wi
nd
er tension bracket
and
sli
de
bracket le
ft
wa
rd
or
ri
g
ht
ward.
Af
ter ade
quat
ely
po
si
tioning
th
e
bracket, t
ig
ht
en
se
t
sc
rew
5.
2)
Do
not overfill
th
e bobbin. The optimum le
ngth
of
thread
wi
ll
fill
abo
ut
80%
of
bo
bbin
ca
pac
it
y.
Thi
s c
an
be a
dju
s
ted
by
adj
us
tin
g
sc
r
ew
6 of bo
bbin
\\'i
nde
r stop latch.
7.
RE
MOVI
NGAND
INSERTING
THE
BOBBIN
I) T
urn
th
e balance
wh
ee
l to lift nee
dl
e bar
I
to
th
e upper e
ncl
of its stro
ke
.
Pl
ace
th
e
fe
ed
do
g at
thi
s
s
id
e
in
its travel turning
th
e ba
lan
ce
w
heel
,
and
open
th
e s
lide
pl
ate
A.
(F
ig.
I)
2)
Op
en
on
th
e
dr
ip
pan
,
and
then
op
en
the
hin
ge
d latch w
ith
le
ft
thumb a
nd
index
fing
e
r.
And
pull
bo
bbin
ca
se
a
nd
bobbin
from
rotary
hook
. While
th
e latch
is
he
ld
open.
th
e bobbin
will
be retained
in
th
e boobin
1,;asc
.
Release of
th
e
lat
ch
and
turning
of
th
e open s
id
e of
th
e bobbin case downward w
ill
ca
u
se
th
e bo
bbin
to
drop o
ut.
A
Fig
.5
2
'--.._
F
ig
.7
3)
Hold
th
e bobbin be
tw
een
th
e thumb
and
for
e
fin
ger ofyour n
!:\
hl
hand
and
pull
out a leng
th
of'
about 5
cm
of
thr
ea
d. Hold
in
g
th
e bobbin case
in
your left ha
nd
turn
th
e o
pen
s
ide
up
n
nd
pl
ncu
th
e threaded bobbin into
ii.
(Fig.
7)
➔)
W
ith
th
e
ri
g
ht
ha
nd
guide
th
e thre
ad
i
nto
the slot
in
the
edgr ')f
the
bobbin case. Then
pull
the
thread
lo
th
e le
ft
.
und
er tens
ion
sp
rin
g I (
Fi
g.
7)
a
nd
i
nt
o
th
e delivel)
ey
e.
In
orde
r
to
keep
th
e bobbin
from
dropping
ciul
of
th
e ca
se
wh
en
it
is turned with the o
pen
s
id
e
do
w
n.
a
lwa
ys
keep
the
hinged
lat
ch
at
the
front
or
the
bobbin
-4-
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case
open.
5)
Take
the
threaded
bobbin
case
by
th
e
latch
anct
place
1t
on
the
center
stud
ot
the
bobbin
case
holder
.
Release
latch
and
press
bobbin
case
on
to
center
stud
until
the
latch
catches
the
undercut
thereon
with
a
click
that
can
be
heard
.
Permit
about
5
cm
of
bobbin
thread
to
hand
down
freely.
Be
sur
e
to
push
the
slide
plate
to
the
right
before
starting
to
sew
.
8.
THREADING
(Fig.8)
1)
Raise
the
needle
bar
to
its
highest
point
and
lead
the
thread
from
the
t11read
stand
the
following
order.
From
the
thread
stand
lead
the
thread
from
back
to
front
through
the
lower
guide
hole
in
pin
1
on
top
of
the
machine
am1
,
then
again
from
right
to
left through
the
upper
guide
hole
in
this
pin
.
Pass
thread
in
weaving
fashion
through
the
three
holes
in
guide
2,
and
from
right
to
left
over
and
between
the
tension
disc
3.
Now
pull
thread
downward
and
from
right
to
left
beneatl1
and
around
thread
controller
4,
continue
to
10
11
pull
thread
upward
against
the
pressure
of
the
wire
spring
Fig
.8
into
the
fork
5,
in
the
thread
controller.
Guide
upward
through
the
point
of
controller
discs
6,
and
thread
guide
7,
and
from
right
to
left
through
the
eye
in
take-up lever 8,
down
through
thread
guide
7,
again
and
th
en
through
9.
I0,
11
and
from
left
to
right
through
the
eye
of
the
needle
12
.
2)
After
the
above
threading,
hold
the
end
of
thread
with
your
left
hand
,
and
tum
the
balance
wheel
with
\our
right
hand
so
thal
bobbin
thread
ma
y
be
picked
up
by
needle
thread
.
And
put
their
ends
of
thread
ba
ck
through
under
the
presser
foot
for
starting
operation
.
9.
REGULATING
THE
THREAD
T
ENSI
ONS
For
ordinary
stitching,
the
tension of
the
upper
and
the
lower
threads
should
be
equal
so
as
to
lock
both
threads
in
the
center
of
the
material.
(
1
Fig
.
9)
If
the
tension
on
either
thread
is
stronger
than
on
the
other
,
imperfect
stitching
will
be
the
result
.
If
the
tension
on
the
upper
thread
is
greater
than
that
on
the
lower
thread
,
it
will
lie
straight
along
the
upper
surface of
the
material.
(2
Fig
.
9)
If
the
tension
on
the
lower
thread
is
greater
than
thal
on
the
upper
thrcad
1
the
lower
thread
will
lie
straight
along
the
w1dersidc
of
the
material.
(3
Fig
.
9)
I)
Tension
of
the
upper
(needle)
thread
:
Before
adjusting
the
tension
of
the
upper
(needle)
thread
be
certain
that
the
presser
foot
is
let
down
but
not
in
lifted
position
.
To
adjust
tension
,
tum
serrated
nul
(A
Fig
.
II)
on
tension
de
v
ice
to
clockwise
to
increase
tension
,
while
turning
it
to
counter-clockwise
to
decrease
it.
2)
Tension
of
the
lower
(bobbin)
thread
:
(Fig.
7)
The
lower
(bobbin)
thr
e
ad
tension
is
controlled
by
th
e
larger
screw
(2
Fig
.7)
near
the
e
nd
of
the
spring
at
the
outside
of
the
bobbin
case.
Turning
this
scr
ew
to
clockwise
to
increase
the
thread
tension
,
while
turning
ii
to
counter
-
clockwise
to
decrease
it.
2
~
3
Upper
thread strong
Upper
thread
weak
or
Wei
I balance or
lower
thread
weak
lower
thread strong
Fig
.9
-5-
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10
.
ADJ
US
TM
E
NT
OF
TH
E
PR
E
SSURE
ON
THE
MATERIA
L
The
pr
e
ssu
re of
the
pr
es
se
r
fee
t is adjusted by
th
e
scr
ew D (
Fig.
2)
with
scr
ew
driver.
To
i'ncreas
e
the
pr
es
sur
e, t
urn
th
e
sc
r
ew
to
c
lo
ck
wise
a
nd
to
c
ount
e
r-
clockwi
se
to
decrease
it.
11.
AD.JUSTING
THE
LIFT
OF
THE
ALTERNATING
PRESSER
FEET
(F
ig.
J
0)
Th
ethickn
ess
of
th
e material should control the height
of
th
e li
ft
of
th
e alternating
pre
sser
fe
e
t.
The lift should
be
just enough
for
c
le
a
ran
ce ofthe
mat
erial.
1)
With
normal
adju
s
tm
ent both
fe
ed
lift
to
equal
heig
ht
:
To
lat
er
lift,
loos
en
th
e wing
nut
A
and
mo
ve
the
li
n~
a
nd
st
ud
ass
embl
y a
lon
g
th
e slot-move
up
to
raise
~he
fee
ding
pr
esser
foot
and
push
do
wn
to
low
er
this
foot.
Tig
ht
enw
in
g
nut
upon
c
ompl
etion ofadjustme
nt.
However,
Fig
.
I
0
so
me
mat
e
rial
s m
ay
require
un
equal
heigh
of
lift.
2)
Wh
en a
lt
ering the lift
of
the
lifting presser
foot
(A
Fig
.
5)
unequally agaiust that of the vibrating presser
foo
t
(B
Fig.5)
or
v
ic
e v
ers
a, see
the
instrnctions
"
ADJUSTING
THE
H
EI
GHT
OF
THE
PRESSER
FEET"
1
2.
STITCH LENGTH
ADJUSTMENTS
AN
D
RE
VE
RS
ING
LEVER
(Fig.11)
S
tit
ch leng
th
can be
se
t by
turning
the
de
tail
2.
e stitch Jen th
in
mm
.
The
de
s
ir
ed
num
er
ic figure
on
the dial should be se
t.
at just
ab
ove.
while depressing
th
e r
eve
rs
in
g l
ev
er
J
sli
g
htl
y.
13.
ADJUSTING
THE
HEIGHT
OF
THE FEED DOG (Fig.12)
The
maximum
height of
the
feed
dog
(1
Fig
.
12
)
from
the
surf
ace
of
the
needle plate
(2
Fig
.
12)
is
normally
1
mm.
1)
Lay
do
wn
the
macJ1ine
head toward the other
s
id
e,
and
turn
the
balance wheel so
as
to
raise
the
feed
do
g
to
it
highest
point.
2)
Loos
en be
ll
c
rank
scr
ew F (Fig.4)
and
adjust
the
height
of
the
teed
dog
by raising
or
lowering
it.
3)
Secur
ely tighten
the
screw upon completion
of
adjustment.
-6-
1
Feed
doe
7
Imm
2 Needle
plate
Fig
.
11
Fig.12
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

14.
RELATIVE
POSITION
OF
THE
FEED
DOG
TO
NEEDLE
PLATE
(Fig.13)
1)
Set
the
stitch
length
at
minimum
.
2)
Turn
the
balance
wheel
so
as
to raise
the
feed
dog
to
its
highest
point.
3)
Lay
down
.
the
machine
head
toward
the
other
side
and
loosen
the
screw
5
(Fig
.
4)
.
4)
Adjust
to
be
32
.1
mm
from
the
e
dge
of
the
n
ee
dl
e
pl
a
te
to
the'
center
of
the
needle
hole
on
the
feed
dog
.
(Fig.13)
5)
Securely
tighten
the
screw.
15.
THE
POSITION
OF
THE
NEEDLE
AND
THE
NEEDLE
HOLE
OF
THE
FEED
DOG
Turning
the
balance
wheel
to
lower
slowly
the
needle
bar
,
check
whether
the
needle
descends
to
the
center of
the
needle
hole
of
the
feeder
or
not.
(Please check
again
the
needle
is
perfect
one
.)
1)
Remove
.
the
cover G (Fig.
2)
and
loosen
the
screw
~
(Fig
.
14)
slightly
.
2)
Holding
the
bottom
of
the
needle
bar
rock
fram
e H
(Fig.3)
,
move
it
as
ma
y
be
required
to
get
the
correct
position
to
th
e
feed
3)
Tighten
the
screw
and
close
the
cover
.
16.
TIMING
THE
NEEDLE
WITH
FEED
DOG
(Fig.IS,
Fig.16)
It
is
important
that
the
timing relationship
between
th
e
n
ee
dle
on
its
downwoard
stroke
and
the
feed
dog
movement
is
mamtamed
at
all
times
.
When
the
scarf of
the
needle
on
the
downward
stroke
reaches
the
top
surface of
the
feed
dog
,
the
feed
dog
movement
must
start.
When
adjustment
is
required,
use
the
following
procedure
to
change
the
position of
cam
I)
Loosen
the
screw
I
for
cover plate 2
and
then
remove
the
cover
plate 2.
2)
Normally
put
the
arrow
mark
7 of
tl1e
cam
6
on
the
V
ditch
5of
am1
shaft.
l11en
tighten
the
cam
screw.
3)
Tum
the
balance
wheel
to
the
needle
at
1
mm
up
from
its
lowest
point.
32
.
lrnm
Fig.13
0
F
ig
.
14
'----------
-
---~
Fi
g.15
87
5
Fig
.
I
(>
4)
Pushing
the
stitch length regulating
le
v
er
up
and
down
,
turen
the
cam
6
and
set
this
at
th
e
point
both
the
needle
and
the
feed
dog
rest.
After
positioning
completed
,
tighten
the
each
screw
securely
-7
-
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com