Global WF 1767-AUT Parts list manual

GLOBAL
WF 1767-AUT/
WF 1767-2-J\O I
Instruction & Parts manual
www.globalsew.com
[email protected]

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----- CONTENTS -- -~!'·
1. PRECAUTIONS BEFORE STARTINGOPERATION.................................................................................. I
1) Safety precautions····.. •·· ·· ···............................................................................................................................ 1
2) Precaution before Starting Operation ........................................................................................................ 1
3) Precaution for Operating Conditions···............................... .. ................................. .. .................................. 1
2. SPECIFICATIONS•·····... .. .......................;......................................... .. ............................................................... .. 1
·3. .PREPARATION
~E:fORE. S'J)\.RTING TO Ol?,ERATE .... _.'.'. !..,~ •• . :: ... _., ... .. J,•?•1., ... _..,: .... ,.. ..... 1•: .- .. :'. .. · •• .: '. ".•·: .. .... !, w• .,"•2
1) Connection of control box............ .. ............... .. ............................................................................................. 2
2) Oil pan···· ·········................................ .. .................. '. ........ .. .................................................................................3
3) Operat ion panel ............................................................................................................................................. 3
4) Adjusting the needle stop position........................ .. ............................ ,: ...................................................... 3
S) Lubr ication..................................................................................................................................................... 4
.4. H
OW TO us~ . TIIE MACHINE ............... .. ...! .. . .... ; ... .. . ... ......... . .... .... ... _. .......... ,. ..... .... , .. · · ·· :--• ..... . ............ .. _. ........ ..... . ... s
• . • i • • • . ' - • • • ' • ' ~ • ,. • • • •
1) Threadi ng··....................................................:....... .. .....................;............. .. ............... .. .................................. 5
2) Adjusti ng of the thread regulator ...................... .. ....................................................................................... 5
3) Adjusti ng of upper thread tension...................~................................................. .. ..................................... s
4) ·Winding the lower thread ........................................................... .. ..............;................................................. s
S) T hr eading the lower thread .........................! .... ............... '. ................... . . ...... .............. . . .. ... . ................... ....... 6
6) .A dju st ing the l.ower-thr~ad_tens_ion··......., .._ ...;..............;...,......,............ '. ···::..... .. ........ '. ....................,.................6
-• \ : ·. : -. ; . -·· - . .. ·. . .. . . . . . , ' . . .
7) Insta lling the needle.............................................................................................................;......................... 6
8) A ltern ating presser foot movementan1ount··............................................................................................ 6
9) Adjusting the presser foot pressure ................. '. .................................. .. .................................................... 7
10) Adjus tin g the st itch length...._....................................................................................................................... 7
11) Using the manual switches...........................:..................................................................................... _. ....... '.. 7
12) Cl ea~ in g········ ·· •• . •······ · ···· · ······· · ··· ····~· ·· ···· ····················· ·······~···~··········•:
0
•• ~· - ·•• t•• ··· ·~···:·················~··· ···~······ ·········· 8
' . . . . . . . . . . . . . .. ' . . . . . . . . ' . . ; . . -.. .
13) L ubri catio11..···...............:...............................:..............:................................................................................. 8
14) Adjusting the trailinglength after thread trimming................................................................................9
15) Back tacking........................................................... .. ............................ .. ...................................................... 10
16) Adjusting the feed dog....;............................................................,.............................................................. 10
17) Adjusting th e needle bar height................... '. ............................................................................................. 10
18) Adjusti ng the gap between the needle and the rotary hook tip.............................................:............... 11
i9) .Adjusti~g of tl~e ne~dle ~nd th~.hook thni~g~...............:...........;.....:.:.:.:...... '.'. .. .;....;... :.: ...;..; .. ;; .. ::: :: .......: .. i1
20) Hook protection............................................................................................................................................. 11
21) Adju sting th e needle and feed mechanism timing.................................................................................. 12
22) Adju sti ng the opener po sition................................................ .. ............................................................ .. .... 13
23) Adju sting the presser foot height................ '. ............................................................................................. 13
24) Ad ju st in g the alternating presserfoot movement amount ....... .. ..............................................:........... 14
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25) Adjusting the presser foot timing····;.....................•.....·................... .. .......;..; ;.; ...•.........•..;..........:............... 15
26) Adjusting thefixed kn if e position............... .. ........................................... .. ............................................... 15
27) Adjusting the thread holding springposition ......................................................................................... 16
28) Adjusting the knife timing position...............,...... .. .................................................................................. 16
29) Adjusting the driving knif e height····........................................................................................................ 17
30) Adjusting the driving knife stop position............................. ~ ................................................................... 17
31) Ad ju st ing the driving knife operating position··... '. ........,........... ..... ,.................;...;....................;.............. 17
32) Adjusting th e thread tr itnming tin1ing...................................................................................................... 18
33) Safety clutch •· ··· ·· ············· ·· ······· •· ····•·········............................ .. ..................... .. ............................................... 18
34) Regulate the atmospheric pressure•··· ···· ····· ... .... .... . ... .. .... .. ... .. . ....... .. .... . .. .... .. ............. . .................... 19
35) Install and uninstall oflmee controller ...... .... : .. , .......... ... . ......... . .... .. .. ... .................... .... . .. ...... ..... .... 19
.. :.. ... . : .. ,, _ _
----- PARTS LIST -----
A. ARM BED AND ITSACCESSORIES..........................................;...... .... ..........................................................20
B. THREAD TENSION REGULATOR MECHANISM················...... ..... ........ ... ................................................ 24
C. SEWINGMECHANISM ···········............................................... ... .. .......... ... ....................... .. .... .. ........ .. ................ 27
. D. PRESSER.FOOTMECtlANISlVI··.. ··: .... :.::.; ......;:........:...........;....:..... ~ . .. :· .• : .• ; .. ;;.:: ... ;:.: ........ ;.: .........:.. ~· ...: ....... ... 30
E. UPPER FEED LIFTING ROCK SHAFT MECHANISM············ ······ .... .................................................. ...... 34
F. STITCH REGULATOR MECHANISM······....................................... ...... ................................................... ... ... 37
G. FEEDING AND F'EED LIFTING &ROTATING HOOKSHAFTMECHANISM................................... 40
H. HOOi(
SADDLE MECHANISM (RIGHT)·····..;·················:...... .- : ....... :............ .. .............. ...... ..........................43
I. HOOi( SADDLE MECHANISM (LEFT) .................................. ... ..........................................., ....•............... . •• 47
J. OILLUBRICATION MECHANISM •.... :.::. :.......:.......:.. .' ;.......... ;; .. ;; ...: ... ; ... :.: ... ;;;; ...• : :.; .. .....:... ... ;: ...; .................. 51
K. ACCESSORIES..................................................................................................................................................... 55
L. PNEUMATIC CONTROLUNIT·..·········................................................................... ... ......................... ..... . .... ... 57
GAUGE PARTS LIST................................................ .. ..... ...................... ... .................... .. ..........................................60
•, .; ,, •. : ,# t "•
• .' •• .,_ if • ~ I •
.. : • •• • 1 1 •••• •
1, .•
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~~
',
1. PRECAUTIONS BEFORE STARTING OPERATION
1) 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 pulley.
(2) Power must
be turned off when the machine is not used, or when the operator leaves his/her seat.
(3)
The power must be turned off before tilting the machine head, installing or adjusting the machine, or
when replacing.
(4) Avoid placing fingers,
ha irs, bars etc. nears the pulley, bobbin winder pulley, when the machine is
operation. Injury could result.
(5)
Do not insert fingers into the thread take-up cover, under/round the needle, or pulley when the
machine is in operation.
(6)
If a mini motor cover, finger guard, and/or eye guard are installed, do not operate the machine
without these safetydevices.
2) Precaution beforestartingoperation
(1) If the machine's oil pan has an oil sump, never operate the machine before filling i t.
(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, verify the rotational direction of the pulley with the
power on. (The pulley should rotate counterclockwise when viewed from the pulley.)
(4) Verify the voltage and (single
or three) phase with those given on the machine nameplate.
3) Precautionfor Operating Conditions
..
.2
(1) Avoid using the machine at abnormally high temperature (35'C or higher) or low temperatures (5'C
or lower). Otherwise, machine failure may result.
(2) Avoid using the machine
in dusty conditions. Avoid using the machine in areas where too much
. -.
electrical noise, resulted from the high-frequency welder an d others, is generated
snCIElCATJO_NS
Item
WF 176?.AUT: WF
1_767-2 AUT
Max. speed
3500rpm 3200rpm
Stitch length
0 to 9mm
Ne edle bar stoke
34mm
Presser foot
By hand
9 mm
IC 1<><>r<inf' <> By knee
16 mm
Rotating hook
Large vertical hook (1.6 times)
Needle
DP X 17 1:118 - /:125
Presser foot alternation 1-7mm
Auto presser foot lifter Pneumatic
Auto-
trimming system
✓
Oil lubrication method Automatic lubrication
Bed dimensions 300X 120 mm
Motor 750\V servo motor
NP.P.cilP. 1111110P (mm)
~?. fi4
8 ( .;;t,:inrl::ird)
10
1 ?.
1fi
- 1 -
-
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Ca ution: when the st itch leng th is l arge r than 6mm, the sewing speed must lower th an 2000 rp m
3. PREPARATION BEFORE STARTING TO OPERATE
1) Connection of co nt~'.ol box ( for auto-trimming series)
It shows the connection of the electrical
wires
of the whole machine on the right
picture. · d · f
HP wi res of soleno id output
. d . f l'R w, n p Ipe o
win pipe o II wires from connection board
When the machine needs to be
assembled, each line should be linked to the
ri
ght jo int according to the instruction of the
picture.
windpipe of STK
synchron i zer wire
A ll the pins on the control box
have signals
of function showing,
and us ually, diffei·ent wires have
differentkinds
of joint.
s i gna I l_.i ne of motor
Ca utio n: the pin of synchronizer
wire is the
same with another two
external pins and
if there is a
rnisconnection, the synchronizer
might be burn.
When connecting the pipes, please
check
the joints of the solenoids according to the
instruction tips, the picture
on the ri ght is
only for reference, please check the
installation
of the so lenoids before
connecting.
Ca ution: The Pneumatic system for
no-trimming series is the
same with the
other series
of the sewing machine
pedal
contro l pane l
back
st i tches
( MR )
/ pipes from
solenoid
power input I i ne
I ift
denseness stit ches(STK)
-2-
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2) Oil pan
(1) Install the oil pan 3 to the underside
of
the
worktable 1 in the place shown in the illustration
using thenails 2.
(2) From front view, the oil pan 3 to the side is
60mm; from right view, the oil pan 3 to the side is
80mm.
3) Operation panel
(1)
Install the operation panel 1 to the
set
.plate2 with the three screws 3.
(2) Install the set plate 2 to the back
of
the machine arm with the two screws 4.
8=0=m=m--'".l----i..
4) Adjusting theneedle stop position(for auto-trimming series)
(1) Adjusting the needle up stop position
3
A l
2
60mm
1
2
4
When the sewing machine stops in the needle up stop position (the stop position
of
trimming) and the
treadle is pressed bac
k,
the red mark on the pulley should
be
consistent with the mark
on
the belt cover
A.
Adjust as follows:
a. Turn
off
the power switch.
b. Loosen the screw 4, and then remove the cover 3.
- 3
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c. When the red mark stops in a position over the mark on the belt cover, the needle up stop position disc 1
should be turned
in the opposite direction as the direction ofmachine pulley rotation. When the red mai-lc stops
in a position under the mark on the belt cover, Turn the disc 1 in the same direction as the pulley rotation
direction.
(2) Adjusting the needle down stop position
When the sewing machine stops in the needle down stop position, the black mark on the pulley should be
consistent with the mark on the belt
c?ver-_A. Adjust as follows:
a.Turn off the power switch.
---- --A-. W-h~n-th~l ;J .J.ack-ma.i:k..stopsin_a_p.ositioll.illle.LtheJJ1ark on the belt cover, the needle down stop position
disc 2should be turned
in the opposite direction as the direction ofmachine pulley rotation. When the black
mark sto·
ps in a position under the markon the belt cover, Turn the disc 2 in the same direction as the pulley
rotation direction.
c. After adjusting·,,install the c.over 3, with screw·4.
Note: Thereis no n ee d to loo se n thescrew5, when t~rning t he discs.
-4-
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4. HOW TO USE THE MACHINE
1)
Threading
Raise the thread take-up lever to its highest position and
thi-ead
the upper thread in the following order.
··-
--·---
--~
·-
·
10
1
9
2
8 4
3
7
6 5
-
-~
---
-
11
-
2) Adjusting
of
the thread regulator
The
thread regulator 9 (see the right picture) regulates the amount
of
needle thread necessary for stitch
formation.
Th
e setting depends
on
the following factors: material thickness, yarn characteristics and stitch
length.
The thread regulator is fitted with slots for this purpose. Moving in
the
"+"direction increases the quantity
of
needle thread; Moving in the "-"direction reduces the quantity
of
needlethread.
3)
Adjusting
of
upper thread tension
ce~'!:!
switch
~~
6
~
In
case
upper
thread
is too
strong
or lower
thread
is
too
weak
X
e?~
In
case upper
thread
is too
weak
or lower
thread
isloo
stro
ng
Tension should
be
as low as possible.
The
crossover point should be in the center
of
the material. Upper
thread tension
can
be adjusted by thread tension nut 4 and 5 (see the picture
of
above). Turn the thread tension
nut clockwise to increase the needle thread tension. Turn the thread tension nut counter-clockwise to decrease
the needle thread tension.
4) Winding t~e
lo
wer thread
(1) Place the bobbin onto the bobbin winder
shaft.
(2) Pass the thread for winding thread as
shown in the figure, and wind the end
of
the
thread clockwise around the bobbin several
times.
(3)
Pu
sh the bobbin presser 1 toward the
bobbin. 3
- 5 -
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(4) The operation will automatically stop by the thread limiter 2.when winding is completed. The amount
of thread wound onto the bobbin should be a maximum of 80% if the bobbin capacity.
(5) After the thread has been wound
on, remove the bobbin and
cut the thread
with the t\u·ead-trimmingknife 3.
5) Threading the lowerthread
(1) Raise flap 1 and remove the
empty bobbin.
(2) Insert bobbin 2 in such a way that
when the tlu·ead is unwound from it moves
in the opposite direction to the gripper.
(3) Pass the thread through slit 3 and
below spring 6, pass the thread tlu·ough
slit4 and pull about3
cm tlu-ough. 4
(4) Close flap 1 and pass the tlu·ead through theflap's guide5.
6) Adjusting the lower-thread tension
5 6 7
The lower-thread tension should be set in accordance with the type of seam required. Adjust the tension
with screw 7. (See the picture of above)
7) Install the needle
2
3
Note: Before installing the needl e, be sure to turn off the power.
)1Unnheoalmrre-wh'e · e-1 -byirandtCYTai:s-e--rhnreectte- bar1:o-it-i======= ====== ======:i- - --
highestposition;
2) Loosen the needle clampingscrew;
3) Hold the needles so that the two needles side with the long
grooved (faces each other), and insert it as deeply as it will go
into the needle clamping holes{ :~; · · · ''. ::>; -- ~. };Hold
the needle to its side with the long groove side(left),then insert
the needle as deeply as
it will go into the needle clamping
hole{ i • -- l, ! }.
4) Tighten the needle clamping screw.
8) Alternatingpresser foot movement amount
The alternating movement amount for the inner presser foot
and the outer presser
foot can be adjusted within the range of 1-7
mm using the alternating presser foot movement dial 1. Turn the
alternating presser foot movement dial 1 clockwise or
counterclockwise to align the mark. (MIN . A, B, C, D, E, F
MAX.)
- 6 -
long
groove
'\
1
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9) Adjusting the presserfoot pressure
The presser foot pressure should be set as
weak as possible, but strong enough
so that the
material does·
not slip. If the presser-adjusting
dial 1 is turned clockwise, the presser foot
pressure will become stronger,
and if it is turned
counterclockwise, the pressure will become
weaker.
10) Adjustingthe stitch length 2 3
The feed adjustment dials 2 and 3 can be used to set two different types of stitch length. (See the picture of
above) Use feed adjustment dial 2 to set the big stitch length. Use feed adjustment dial 3 to set the little stitch
length.
The sewing machine will switch between the two stitch lengths each time the stitch length change switch
is pressed.
11) Using the manual switches
(1) Quick reverse switch
Back tacking is can"ied
out during sewing only
while theswitch I is being pressed.
(2)Alternating presser foot movement change switch
The sewing machine can be switched between
two different alternating presser foot movement
amounts each time when the switch 2 is pressed.
(3)Auto
back tacking selectswitch
If the switch 3 is pressed when either start back
tacking
or end back tacking has been set to ON at
the operation panel, back tacking is canceled for the first time only. Furthermore, if the switch 3 is pressed
when neitherstarting nor
end back tacking has been set, back tacking is carried out for the first time only.
(4) Needle up
or down switch
If the switch 4 is pressed, The needle will move up to the needle up stop position from down stop
position
or move down to the needle down stop positionfrom up stop position.
(5) Stitch length changeswitch
The stitch length changes alternately between two different stitch length settings each time the switch 5
is pressed..' OFF: Sewing
is carried out using t he big stitch length; ON: Sewing is canied out using the
little stitch length.
- 7 -
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(6) Stitchcounter switch
The orange light on the switch will flash and the machine will stop when the bobbin tlu·ead is used up.
Push the
sw itch one more time after change the bobbin. The sewing machine cannot run before the switch
be pushed one more time.
The stitch count should beset according to the stitch length and the count of the
bobbin thread.
Notice: the switch is not work until the correlative functions of the control box are set. The functions
pleaseread the parameter42, 43,
44 in the servo motor user manual.
12) Cleaning
(1) The area around the feed dog and the hook should be cleaned every day.
(2) Remove any tlu-ead scraps from inside the rotary hook.
(3) Keep the control box clean.
13 )Lubrication
(1) Check the oil level at the sight glass 1 every week. If the oil is
not enough, remove oil-filling screw 2 and pour in oil. Check
oil level
at sight glass 2. The oil level must be between
"EMPTY" and "FULL". Replace oil-filling screw 2. After
running for 500 hours since buying the new sewing machine,
the oil must be changed. Then change the oil every two years. 2
(2) The oil quantityis pre-set at a relatively high level in order to ensure adequate lubrication during running-in.
This setting should
be checked and corrected after running-in. (approx. 50 hours). The hook is to have
positive lubrication with the least possible amount
of oil. Let the sewing machine nm approx.2 minutes.
And run in intervals. Hold a piece
of paper next to the hook and check if sufficient oil is sp un oil onto the
paper. Remove cover plate 2. Loosen screw 3 until the tube 1 no longer moves.
Th is is the case when the
tube is in the center
of the drilled hole. Turn screw 3 in until the tube movement just starts and then a 1/8
turn farther.
The hook lubrication is preset. Attach cover plate 2 again. Setting the hook lubrication with
screw 3.
2----tt
3
-8 -
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(3) Lubricating wicks and felt (see the picture
of
above)
a.
Th
e wick 1
le
adi
ng from the oilsump to the oscillating crank 4 must be fixed between the groove2 in the
arm and the spring3
of
the
recirculation wick.
b. When the oil satchel is changed, the flock side should
be faced to connecting plate 10.
The
oil wick 7 and 8
should be setbetween the oil satchel 9 and plate 8.
(4) Checking the lubrication oil.
Turn on the power switch.
De
press the tread
le
gently and ch
eck
that the oil level rises in the oil sight
glass.
14)
Adjusting the trailing length after thread trimming(for auto-trimming series)
Adjust
by
turning the
pr
e-tensioner
1.
If
the
tension
of
the pre-tension is increased, the lengths
of
the threads trailing from the needle tips will be
reduced;
if
the tension is reduced, the lengths
will
be
increased.
- 9 -
oi
I
wind
o
ws
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1 5) Back tacking
When the reverse lever 1 or the quick
reverse switch is pressed during sewing, the feed
direction will be reversed. When it is released,
thefeed direction will return to normal.
16)Adjusting the feed dog
Set the feed adjustment dials to the
minimum settings. Then adjust as follows so
that the feed dog 1 is at its highest position
(0.5mm above the top of the needle plate 2)
when the needle bar is at its lowest position.
(I) Turn the machine pulley to set the feed dog
1 is at its highest position.
(2) Loosen the screw 3.
(3)Adjust thefeed dog's height.
-- -- -\ ~ig-h-~R-th~Gfe-W-::.
17 )Adjusting the needle barheight
Set the feed adjustment dials to the minimum settings. Then
adjust so that the distance from the setting surface of the needle
plate 2 to the end of the needle bar 1is 18.5mm when the needle
bar 1 is at its lowest position.
(1) Remove the face plate.
(2) Set the feed adjustment dials to "0".
(3) Turn the pulley to set the needle bar 1 to its lowestposition.
(4) Loosen the screw 3 and then move the needle bar 1 up or
down to adjust so that the distance from the setting surface of the
needle plate 2 to the end of the needle bar 1is 18.5 mm.
- IO -
0.5mm
'
W/47
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(5) Tighten the screw 3, install the face plate.
1 8) Adjusting the gap between the needle and the rotary hook tip
The gap between the needle and the rotary hook tip I is 0.1 mm.
Set the rotary hook tip
at the level of the middle of the needle. Then
adjusting the gap as follow:
(1) Loosen the screws 2 and 5 (see the picture of below).
(2) Set the hook base 6 to the fit position.
(3) Rotate the adjusting plate 3, let the hook base 6 depend
on the bed
plate 4.
(4)Tighten the screws 2 and 5.
6 2
·· 19)Adjusting of the needle and the ho ok timing
·• 0) Setthe stitch length to "O''
(2) Remove the needleplate.
(3) Overturn the arm.
(4) Loosen the screw I
(5) Turn the machine pulley to raise the needle bar from
its lowposition to the point that the needle rises 2.4 mm.
(6) Turn the rotary hook to align the rotary hook tip with
the center
of the needle.
(7) Tighten the screw I.
20) Hook protection
In looping stroke position the needle must abut on the hook
protection I without being displaced.
Move needle in looping stroke position
by pulley. In looping
stroke position the hook tip is
at the level of the middle of the 2
needle. Press needle against hook protection I manually.
The needle
-11 -
0.1 mm
1
5
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should not touch the hook tip.
21)Adjusting the needle and feed mechanism timing
(1) Horizontal feed direction
Set the feed adjustment dials to the maximum settings. Then turn the machine pulley until the needle bar is
at its lowest position. Then adjust
so that the need le and the feed dog do not move even when the reverse lever is
moved up and down at this time.
a. Remove the
bed upper cover 1.
b.
Set the feed adjustment dial to the maximum settings.
c. Loosen the two screws 2.
2
E d. Turn the machine pulley until the needle bar is
at its
low
est position.
3
e. Turn the lower feed cam 3 gradually until it is at the
position where the needle and the feed dog do not move even
when the reverse lever is moved
up and down.
f. Tighten the two screws 2.
(2) Vertical feed direction
Set the feed adjustment dials to the minimum
settings. Then adjust as follows
so that the feed dog 1
is at its highest position (0.5mm above the top
of the
position.
a. Loosen the two screws 3
b. Turn the
ma<;:hine pulley to set the needle bar to
its lowest position.
c. Turn feed cam 4 to align the point 5 of feed
cam 4 with the centerline
of feed rod 6
d. Tighten the screws 3
-12 -
2
0.5mm
~
3
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22) Adjusting
th
e
opener
position
Adjust
so
that the clearance between
Lhe
needle plale 3 and
Lh
e
stopper 4
of
the inner rotary
hook
2 is 0.5-0.7
mm
when the
opener I is
at
its closest position
to th
e inner rotary hook 2.
(1)
1\i
rn
the machine ptilley
to
move
the
opener 1 in di~·ection
"a"
(opening direction), and then loosen
the
sc
r
ew
5
(2) Turn the machine pulley to
move
the
opener I
in
direction
"b"
(closing direction), and then
loos
en the screw 6.
(3) Turn the machine pulley
to
move
the
opener 1 as close to
the inner rotary hook 2
as
po
ss
ible.
(4) While pressing the opener 1 ~gainst the inner rotary hook 2
with your finger, adjust
so
that
the
clearance between the needle
plate 3 and the stopper 4
of
the
inner
rotary hook 2 is 0.5-0.7
mil)..
(5) Tighten the screw 6.
(6)
1\i
rn
the machine pulley
to
move
the
opener 1
in
direction
"a
" (openingdirection), and then
tighten
the
sc
rew 5.
23) Adju
st
ing the presserfoot height
7
9mm
,
..
The
standard heig
ht
of
the outer
pres
se
r foot 7 is 9 mm when
it
is raised by the presser lifter bar 1.
(1) Remove the beltcover.
(2) Loosen
th
e presser adjusting screw,
to
release the presser foot pressure.
(3) Raise the presser lifters
bar
1
and
th
en
loosen thescrew2.
(4) Move the out~rpresser b~· up
or
.down to adjust
so
that the height
of
the outerpressetfoot 7
~s
9
rrµn
.
(5) While the stopper pin 6 is touching against the notch B in the
pr
esser foot lifter
co
nnection 5 and while
pushing the
pr
esser lifter shaft
so
th
at
there is no play in the thrustdirection, tighten the
sc
r
ew
2.
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13
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(6) Turn the presser adjusting screw to adjust the presser foot pressme.
(7)
Install the beltguards.
24) Adjusting the alternating presserfoot movement amount
(1)
Maximum alternating presser foot
mov
eme
nt
amo
unt. Carry
out
the following adjustment to
set
the
maximum alternat
ing
move
ment
amounts for the inner
presser foot I and outer presser foot 2
to
the maximum
of7
mm.
a. Remove the
upper
plate.
b. Remove the.adjus
tin
g .bracket 3.
c. Loosen
sc
rew
5
of
adjusting brac
ket
collar
4.
d. Adjust the adjusting
bracket
co
llar
4. If the
adjusting bracket
co
l!ar
4
is
be
in
sta
ll
ed
at
the hig
hest
position, the alternating presserfoot
movement
amount
is
I
-6mm. If
it
is at the low
est
position, the alternating
presserfoot movement·amount
is
•
l.6
•
7mm.
e. Tighten the
screw
5.
f. Install the adjusting
bracket
3.
Maximum
7mm
g. Loosen the bolt 6
and
turn connecting lev
er
7
to
Ac,ijust
so
that the distance from the outer
edge
of
the
arm to the outer
edge
of
the pin
7
is
78
mm
at
this time.
Then
tighten thebolt
6.
(Wh
en installing the upper plate,
-
--
-~t--the
alternat.i-Ag-~res-se1'-fuet-
me>-vements
-
diattcrthe
"min." position.)
3
4
5
(2) Inner
pr
esse
r foot l a
nd
outer presser
fo
ot 2 f!l0vement
amou
nts. Carry
out
the following adjustment
to
make
th~ mov
ement
amounts for the inner
presser
foot 1 an~
oute
r presser
foo~
2
eq
_ual :,vhen the pres~er_
feet
are
lowered and the machine pulley
is
turned.
a.
Set
the feed adjustment dials to
the
maximum
setting
s.
b. Open the
cover
4
--
14 -
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3
c. Turn the alternating presser foot movement dial to the
"B"
position.
d.
Loosen the screw 3·
e. Turn the machine pulley toward you to align the tip
of
the needle and the top
of
the feed dog with the top
of
the needle plate.
f.
Move the connecting lever to adjust so that both the inner presser foot 2 and outer presser foot 1 are in
contact with the top
of
the needle plate
at
this time. Then tig
ht
en the screw 3.
25)Adju
st
ing the presserfoot timi
ng
When the ·presser'feet are l~we·red and th~ machine pulley is
turned toward you.
The
inner presser foot should touch the feed
dog·before the needle arrives
at
the feed dog. Then when the
needle lifts up, the tip
of
the needle should move away from the
feed dog before the inner presser foot moves away.
(l,+RmG:Yy
thg
upper
ca
v
e~
4 (tb
(2) Loosen the7:wo·screws
1.
(3) Turn the machine pull
ey
until the needle tip and the feed dog's
up
face is
the sameplane.
(4) Turn inner presser
cam
to adjust
so
that the point
of
inner presser camis
facing straight up.
(5)Tighten·the screws-I.
(6) When installing the upper plate,
se
t the alternating presser foot
movementdial to the
"MIN."
position.
26)Adju
st
ing the fixed knife position(for auto-trimming series)
The distance from the groove
of
slide plate to the fixed knife 1 should be 26 mm. Furthermore, the distance
from theedge
of
the needle plate to the leftedge
of
the tip
of
the fixed
knife
1should be 4 mm.
(1)
"Loosen
th·e two bolts
2.
(2) Adjust the position
of
the fixed knife
I,
and
th
en tighten the bolts 2.
-·
15
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2
27)
Ad
justing
the
thread holding spring position(forauto-trimming series)
The thread holding spring 1 holds the low
er
thre!ld after thread trimming to prepare it for the next sewing
operation.
Th
e clearance between the thread holding spring
1
and the
si
de of the fixed
knif
e 2 should
be
1.4-1.6
• •
'#
• • •
~
• • • • • •
mm.
(1) Loosen the two scr
ews
3.
(2) Move
th
e thread holding spr
ing
1 to adjust
its
position,_and
the11
tighten the screws 3.
28)Adjusting the knife timing position(for auto-trimming series)
After adjusting the position
of
the fixed
knif
e
1,
adjust the knife timing position.
Adjust so that the driving knife I starts touching the fixed knife
at
a
po
sition
5.5
mm
along the front edge
of
the
driving knife
I.
(1) Loosen the_
two bolts 3 and 4.
. .
(2) Move the driving knife 1 to the l
eft
or right to adjust its position.
(3) Then tighten the bolts 3 and 4.
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16
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