Siruba R718K User manual

R~Jii1~f!iPIIDaJ KAULIN MFG.CO.,LTn
The specification and/orappearances of the equipmentdescribed in this instruction book and parts
list are subjectto changebecause of modification without previous notice. ODM14P31.JUNE.2013
R718K/R728K
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INSTRUCTION BOOK & PARTS LIST
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From the library of: Superior Sewing Machine & Supply LLC

EC DECLARATION OF CONFORMITY
According to the following EC Directive
Machinery
Directive: 98 I 37 I EC , as amended by 8913361 EEC and 731231 EEC.
The undersigned, ROBERT TSAI , representing KAULIN MFG. CO .. LTD. 11 F 128
Sec. 3 Min Shen E. Road, Taipei , Taiwan ROC., manufacturer, declares that the
machine described hereafter:
Post-Bed Lockstitch Machine
Model: P700K/R700K
Provided that it is used and maintained in accordance with the generally accepted
codes of good practice and the recommendations ofthe instructions manual, meets the
essential safetyand health requirements of the MachineryDirective.
For the most
specific risks of the machine, safety and compliance with the essential
requirements of the Directive has been based on elements of : the European Standard
EN 292 - 1 & - 2 : 1992 Safety of machinery ; basic concepts, general principles for
design.
The compliance of the model with the requirements of EC Machinery Directive was
established by AIB-VINCOTTE Inter n.f.p, Avenue A. Drouart 27-29, B 1160, Brussels,
Belgium ( Notified
body under the number 26 for machinery listed in annex IV of EC
Machinery Directive).
Date: AUG. I 1 I 2006
Signature: W..,<....( · L'
Qualification : R&D MANAGER
From the library of: Superior Sewing Machine & Supply LLC

General Safety Instructions
Warning !When using this machine, basicsafety precautions should always be followed to reduce the
risk of fire, electric
shock and personal injury, including the following.
Read all these instructions before operating this product and save these instructions.
1.Keep work area clean.
Cluttered areas and benches invite injuries.
2.Consider work area environment.
Do notexpose powerto rain. Do not use machine tools in damp or wet locations. Keep workareawell lit.
Dot notuse powertools where there is risk to cause fire orexplosion.
3.Guard against electric shock.
Avoid body contactwith earthed or grounded surfaces (e.g. pipes, radiators, ranges refrigerators).
4.Keep children away.
Do not let visitors touch the tool or extension code.
5.Dress properly.
Do notwearloose clothing or jewelry, they can be caught in moving parts. Wear protecting hair covering to
contain long hair.
6.Do not abuse the cord.
Nevercarrythe machine by cord or yank it to disconnectit from the socket. Keep the cord awayfrom heat,
oil and sharp edges.
7.Maintain machine with care.
Follow instructions for lubrication and changing accessories. Inspecttool cord periodicallyand if
damaged have it repaired by
an authorized servicedfacility.
&.Disconnect machine
When notin use, before servicing and when changing accessories.
9.Avoid unintentional starting.
Do notcarry a plugged in tool with a finger on the switch. Ensure switch is offwhen plugging in.
1O.Check damaged parts.
Before further use of the tool, a guard orother part that is damaged should be carefully checked to
determine that it will operate properly and perform its intended function.
11. Warning.
The use of any accessory or attachment, other than those recommended in this instruction manual, may
present a risk
of personal injury.
12. Have your tool repaired by a qualified person.
Repairs should only be carried out by qualified persons using original spare parts.
Special Warning For Electric Connection!
1.1ncorporatethis machine onlywith "CE" certificate hold-to-run control device.
2.Followthe instruction manual device to install control device.
3.Aiways earth machine appropriatelyduring operation.
4.Before adjustment, parts change orservicing must be sure
to pull outthe plug from socketto prevent
the hazard ofunintentionallystart of machine.
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INDEX
J{/PAGE
IMPORTANT SAFETY INSTRUCTIONS 1
WARNING 5
SPECIFICATION 6
LUBRICATION 7
INSTALLTHE NEEDLE 7
ASSEMBLEAND DISASSEMBLE THE BOBBIN 8
OPEN AND CLOSE THE ROLLER PRESSER FOOT 10
THREADING 11
ADJUSTTHE THREAD TENSION 12
ADJUSTTHE NEEDLETHREAD TENSION
12
ADJUSTTHE HOOK THREAD TENSION 13
ADJUSTTHE STITCH LENGTH 13
ADJUSTTHE PRESSURE OF THE PRESSER FOOT 14
ADJUSTTHE NEEDLE BAR AND THE HOOK
14
THE CLEARANCE BETWEEN THE NEEDLE AND 16
THE HOOK TIP
ADJUSTTHE LOWER FEEDING ROLLER HEIGHT 18
ADJUSTTHE HOOK OPENER 19
TABLE CUT-OUT OF FLAT BED R718-T1 20
From the library of: Superior Sewing Machine & Supply LLC

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IMPORTANT SAFETY
IN STR U CTI 0 NS
For operating safely and to get the most out
of the many functions of this machine, you
must operate it correctly. Please read and
follow the instructions of this manual, and
keep it at hand for future references.
We are
confident that you will enjoy this machine as
much
as we enjoyed manufacturing it.
1.When you use this machine, please pay
attention tothe basis safety measures.
2.Before using this machine, please read this
manual and all related instructions. In
addition, please save this manual for your
future needs.
3.Piease use this machine after it has been
ascertained that it conforms with safety
standards and regulations ofyour country.
4.1t is not allowed to operate this machine
without the specified safety devices. All
safety devices must be in right position.
When the machine is ready for operation.
5.This machine must be operated by an
appropriately trained operator.
6.For your own safety, we suggest you wear
goggles.
7. Please turn off the power switch or
disconnect it before doing the following
tasks:
(1 ).Threading needle(s), adjusting thread
Take-up(s), thread guide(s), and I or
replacing bobbin(s).
(2).Replacing needles, presser feet, needle
plates, feed dogs, needle guards,
folders, cloth guides and other parts or
accessories.
(3).Repairing this machine.
(4).When
the operator is leaving the
working place or when the working
place is unattended.
(5).While clutch motors without brake pads
are
used, motors must come to
completely stop.
From the library of: Superior Sewing Machine & Supply LLC

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8.By any chance, if you allow grease, oil, or
any fluid contact your skin or eyes, please
wash the contacted area completely with
clean water and consult a medical doctor.
If the fluid was swallowed contact a
medical doctor immediately.
9.Do not touch any parts and devices in
motion while the machine is running,
Always pay attention to whether power
switch is on or off before conducting any
task.
1
O.Qualified technicians are required for
machine adjustment, modification, and
repair. Only genuine parts from SIRUBA
are recommended for replacement.
Damage resulted in using generic parts
are subjectto your own risk.
11.Routine maintenance and check-up have
to be performed by appropriately trained
persons, orqualified technicians.
12.Qualified technician or well-trained
persons are required for services to
electronic components knowledge of
electronic is essential for conducting
adjustment or repair tasks. Stop the
machine immediately when discover the
failure of any of the electronic
components.
13.The air hose has to be detached from the
machine and the compressor or air supply
has to be cut off before repairing and
servicing the machine equipped with
pneumatic parts such as an air cylinder.
Qualified technicians or well-trained
persons are required for adjustment and
repairs.
14.To ensure the best performance,
periodically clean up on the machine is
necessary.
15
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15.To level the machine on the ground is
essential in order to ensure a proper
operation and lower noise. Avoid
operating a machine at a noisy
surrounding.
16.A proper power plug must be used with
this machine by electrician. Please
connect the power plug to a grounded
receptacle.
17.This machine can only be used for the
designed purpose. Other uses of this
machine are not allowed.
18.Any modification or conversion made on
this machine must be conformed with the
safety standards and regulations.
Precaution is necessary. We assume no
responsibility for damage caused by
modification or conversion of this
machine.
19.Two safetywarning signs are applies:
(1 )For the safety of operators and service
persons, please don't open the cover of
any electronic control boxes of motor or
other devices and don't touch any
components inside to avoid electrical
shock hazards.
(2)Aiways keep
in mind :
Please never operate this machine with
belt cover, finger guard or any safety
device removed to avoid physical injury
a.Piease keep your hair, fingers and
cloths away from the hand wheel
"bobbin winder", V belt and motor
while the machine is in operation to
prevent the risk of injuries
by tangled
into them.
b.Piease never put your fingers under
the needle or in the thread take up
cover when you turn on the power
switch or operatethe machine.
From the library of: Superior Sewing Machine & Supply LLC

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c.Piease never put your fingers under
the needle
or in the thread take up
cover when you turn on the power
switch or operatethe machine.
d.While the machine is in operation, the
hook rotates at a high speed. Please
keep your hands away from the area
of hook to prevent possible injury to
your hands.
In addition, please make
sure
to turn off the power of the
machinewhile
changing bobbins.
e.Be careful not
to place your fingers
inside the machine when moving I
raising the machine head to avoid
possible physical injuries.
f.Piease turn off the power of the
machine before tilting the machine
head
or removing the belt cover and
the V
belt to avoid possible accidents
due to abrupt start ofthis machine.
g.The
motor does not produce noise
while the machine is at rest if your
machine is
equipped with a servo
motor. So, please turn
off the power
of this machine to avoid possible
accidents due to abrupt start of the
machine.
h. Never operate the sewing machine
with the
ground wire removed to
avoid electrical
shock hazards.
i. Please turn the power switch off in
prior to the connection or
disconnection of the power plug to
prevent possible accidents
due to
electric shock or damaged electronic
components.
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-5-
WARNING
Please confirm the following to avoid
malfunction and damage to this machine.
1.Ciean
this machine completely before
putting this machine in operation for the
first time afterset up.
2.Ciean all
dust and oil gathered during
transportation.
3.Confirm
that the voltage are set correctly
and phase (single or 3 phase) of motor.
4.Confirm that the power
plug is properly
connected to the power supply.
5.Never use the machine where the voltage
type is different to the designated on shown
on
the motor nameplate.
6.Confirm that the direction of the rotation of
the machine pulley is correct.
Warning:
Before doing the following operation or
adjustment, please turn the power off to
prevent accidents caused by
abrupt start of
the sewing machine.
From the library of: Superior Sewing Machine & Supply LLC

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SPECIFICATION
~ID[
Model R718K--{) 1/02
R728K -16-20-24
R728K -28-32
m~
Specification -~/One Needle
~~!fwo Needles
~§~~
Stitching Style
~~ Lock Stitch
_LT .. ~
Upper & Lower Roller
~YES
Feeding
.. ~
Roller Diameter
036,30,26
R718K-01~ No NO
~~
Needle Feed
R718K-02~ Yes
$~~,~~,~#~~m~~OOz8~
ffl~
Application Stitching decorative derby edge of shoes, leather
and mid-thick fabric.
ft~@J .. ~
Max Rotating Speed MAX. 2500 S.P.M.
fOe R718K-01 0-4.5
mm
0-4.5mm
Stitch Length R718K-02 0-7
mm
~-rr~
Needle Bar Stroke
41mm
;RWff~
ThreadTake-Up Stroke 68mm
¥¥~rr~ ~~~
PresserFoot Stoke
7mm/12mm
Lift by Hand/Knee
;RW~~
Type ofThreadTake-Up RingType
~~
Hook 7j(
ZjS~@]~ RotayHookHorizontalType
~11
Needle Width -1.6, 2.0, 2.4, 2.8, 3.2
~ffl~
Needle ORGSN DPx5#16/SCHMETZ 134
~l*R-t
Bed Specification 5181178 (mm)
~~~
BobbinWinder
~~Attached
~~wmm
Stitch LengthAdjustment 'fflittiW1f PushButton
§111-171~
Auto ThreadTrimmer
~None
1JDntl1f~
Lubrication ~~ntl Manual
~~
Thread
1tMI*~#20-40 I Polyester#20-40
~m~ME
~:a.rt~~t~,ti!fij~~
Stitching System Post-bed, Lockstitch, and Poller Feed
Wt~
fjlf§~ 3 fl3 400W ' 112HP -~~Wt~
Motor Single or 3 phases, 400W, 1/2
HP Clutch Motor
~1/Table 1
-6-
~~~w~m~oo•-~~~~~~~~~
9m~•~x~~~~~~~~~~~~
~Ill ' J.j_ iiii~H!I$ o (1111. !112, 1113)
1112/Fig. 2
1. ¥~
~-~~~tt~mAti.~tiR*·~m
¥~tf~ ' 'OOti~tiiiHI!!l~A~ !i=il~JJ ' M
lt!R!IIift*B o (114)
-7-
LUBRICATION
When starting to operate a newmachine or
after idling a while, please lubricatethe
indicated points and otherjoints enough as
the arrows
show in the figures in order to
protect the machine life. (Fig. 1, Fig. 21 Fig, 3)
1111/Fig. 1
!113/Fig. 3
INSTALLTHE NEEDLE
1. Single needle
Insertthe needle intothe needle hole of
the needle bar until reaching the end.
Make sure the needle grooveA facing the
right side, and then tighten the screw B.
(Fig. 4)
From the library of: Superior Sewing Machine & Supply LLC

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~-tt~tt~S~M-2tt~~~-~~
I!$ ' 'ffJI~ M2 tt 1m l!!l ~AfJHa) ~ ii ' :jij
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114/Fig. 4
2. Two needles
Insertthe needle intothe hole
of the
needle clamp until reaching the end. Make
sure the needlegroovesA
of the needles
facing two sides and opposite to each
other, and then tighten the screw
B. (Fig.
S)
!IS/Fig. S
·- ------------------------------------------------------------------------------------------1
~T z~!D ASSEMBLE AND DISASSEMBLE
THE BOBBIN
--------------------------------------------------------------------------------------------
1. ft-T2t.f.FiP
Hf~ll(A~ie , llPRJIDlliift~B&ft-TC o
(1116)
-8-
1. Disassemble the bobbin
Pull the latch lever A, and then take out the
bobbin case
Band the bobbin C. (Fig. 6)
2. *I-T2~
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V~®~~Hffi.D@-~ili,~iliq.
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li: 0 (117)
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-9-
116/Fig. 6
2. Assemble the bobbin
Put the bobbin in the bobbin case and
rotate the bobbin a littleas the arrow show
in the figure. Then pull the thread from the
thread path
®. go beneath the thread
pressing spring tongue
<D. and pull out
from the thread hole@. When the thread
is pulled out from the thread hole, it
should be upon the thead pressing spring
@, and have the therad left about 10 em
long. (Fig. 7)
IF/Fig. 7
3. Assemble the bobbin case
Place the bobbin case in the hookand
thread through the groove Dof the hook.
(Fig. 8)
From the library of: Superior Sewing Machine & Supply LLC

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(1119 I 11110)
1!19/Fig. 9
-10-
1118/Fig. 8
OPEN AND CLOSE THE ROLLER
PRESSER FOOT
Turn the presserfoot lifting switch ffi upward
to liftthe roller presser foot~· Then, press
the roller presser foot~ down, and turn it left
to open. For closing the roller presserfoot,
reverse the
steps to have the result. (Fig. 9.
Fig. 10)
1!11 0/Fig. 10
I
'--------------------------------------------------------------------------------------------
1
i !l!ti;ZJJli THREADING
'--------------------------------------------------------------------------------------------
~-~~m~~M~~~~~~ti~~·~
il~1 Ocm;Z,IJ~ o (1111 1 11112)
ii~t/Single Needle
-11-
Please thread as the sequence shown in the
figures. Please left
the thread about 10 em
afterthreading through the needle hole. (Fig.
11, Fig. 12)
III11/Fig.11
11112/Fig. 12
From the library of: Superior Sewing Machine & Supply LLC

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(11113)
A. ii'I:!RJI
B. $tM:i\.M
C. tt*i:i\.Ji
ADJUSTTHE THREAD TENSION
When doing adjustments, please note that
the needlethread and the hookthread should
be even. (Fig. 13)
A. Propertension
B. Needle thread is too tight
C. Needlethread is too loose
CDtt*l (j)NeedleThread ®~• ®Hook Thread @:ffi'fl @Sewing Material
-AO
B X
-c
X
11113/Fig. 13
Q~ti·~~O(j)'~~~ti-~Jfo
(11114)
-12-
ADJUSTTHE NEEDLE THREAD
TENSION
Rotate the needlethread tension adjusting
knob
CD to adjust the desired tension. (Fig.
14)
11114/ Fig. 14
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.tt~~&AI! ~rJ Ja ' -F -§fin a ~rJ Ja o ~
~~~~~z•~•*M¥OOB~•'M
HfniaHAl&fi o (11116 ' 11117)
2. =FM~z~m•*~~~•~zAm o
11116/ Fig. 16
-13-
ADJUST THE HOOKTHREAD
TENSION
Rotate the tension adjusting screwA to adjust
the hook thread tension. (Fig. 15)
11115/Fig. 15
ADJUST THE STITCH LENGTH
1. Push the button Ainwards and turn the
pulleyslowlywhile the button Ais pressed
to the end. When you hear a "click", that
meansthe button reaches the end. Then,
align the desired stitch length numberwith
B. Release button Aafterwards. (Fig. 16,
Fig. 17)
2. The scaleon the pulley is the stitch length.
11117/ Fig. 17
From the library of: Superior Sewing Machine & Supply LLC

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E
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L{)
C")
-14-
ADJUSTTHE PRESSURE OF THE
PRESSER FOOT
1. Rotate the screwA clockwise will increase
the pressure. (Fig. 18)
2. Rotate the screwA counter-clockwise wi II
decreasethe pressure.
11118/Fig. 18
ADJUSTTHE NEEDLE BAR AND
THE HOOK
1. Rotate the pulleycounterclockwise (turn to
your direction). When the needle bar raises
3.5 mm from the lowest point, the hooktip
is right atthe center
of the needle, and the
distance is 1 mm from the hooktip to the
upper edge ofthe needle hole. (Fig. 19)
11!19/Fig. 19
2. ttlfiSMillJ!i - ~tt·llii~!IIMCDME
B'L~~~tilfiSM'M--M~CDo
(11120)
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-15-
2. Adjust the needle barheight -loosen the
needle barfixing screw CD. adjust the
height
of the needle bar, and then tighten
the screw(j). (Fig. 20)
11120/Fig. 20
3. Adjust the hook timing position
relationship -loosen 2 fixing screws@ of
the spiral gear@. Then, adjust the hook
tip to where the Fig. 19 indicates. After
that, retighten the 2 fixing
screws@ of the
spiral gear@. Please be noted that when
tighten the screws, the spiral
gear@
should be next to the right side of the
fixing
ring@ ofthe shaft. Otherwise, there
will have too much space to the passive
spiral gear@ located above the ring. (Fig.
21)
11121/Fig. 21
From the library of: Superior Sewing Machine & Supply LLC

I
--------------------------------------------------------------------------------------------1
ttW~BJi~.:ZrdliJIS:1a0.02 - o. 05 mm o
(1!122)
1. ¥~-~•~oo~~~~~w~~~®
~w~••~~o~-~~L.:z•~•
··-~@·~~~~~@·~~~-~
@·~~~~L~~M~~-~@o~
~~~~~~~~3~~~¥~•mxo
&~8-R&M~·=·-~~--~~
•M@q·a~~~L~.:Z-~8·®~
&~~~~~~~@~00~-~~-0
(11123 ' 1124)
11123/Fig. 23
-16-
THE CLEARANCE BETWEEN THE
NEEDLE AND THE
HOOK TIP
The clearance between the needle and the
hook tip should be between 0.02- 0.05 mm.
(Fig. 22)
1. Single needle -loosen the 2 screws CD.
and take the needle plate® and lower
gear cover. Loosen the spiral gear of the
lower shaft, screw@, fixing hexagonal
head screw@, bearing hexagonal head
screw@, and 4 fixing screws @of the
rotary
hook base. Then, adjust the rotary
hook to a proper position bymoving left
and right. Tighten each screw in reverse
order.
Be aware of the engagement
between the fixing
screw@ of the spiral
gear and the passive gear® should be
unhindered when tighten the
screw@ of
the spiral gear.
In addition, only tighten
the
screw@ afterthe fixing ring@ is right
next to the spiral gear. (Fig. 23, Fig. 24)
1124/Fig. 24
2. Wtt-~BAA~~~-M~·~~~tt
~~~~~.:z·~·-~~-~@·~~
~-~@·~~~MM®·~~~~~~
•M®·tt~~~~~~~~-~~~~
~~~~~~@~~=m•o~•&•8
m~&MM···~-~--~~-M@
q,a~~w•tia•.:z~*~Qm~o
?&~' H~~~li®AR.L o (1125' 1B
26)
_j
-17-
2. Two needles- loosen 2 screws CD on both
side, and take offthe needle plate. Loosen
the
screws@ of the lower shaft spiral
gear, fixing hexagonal head screw@,
bearing hexagonal head
screw@, fixing
screws@ of the rotary hookbase, and
screws~ of the needle plate holder.
Adjust the rotary hook seat@ left and
right to the proper position. Then, tighten
each screw in reverse order. When tighten
the fixing
screw@ of the spiral gear,
please notice ifthe engagementwith the
passive gear is rotating smoothly. Then,
putthe fixing
ring@ next to the gear
closelyand tighten it. (Fig. 25, Fig. 26)
11!25/Fig. 25
11126/ Fig. 26
From the library of: Superior Sewing Machine & Supply LLC

I
--------------------------------------------------------------------------------------------1
1. !itt - ~"""Fti~JBHlUi*(flJJ) ' ~-~
fl~~~*!IIM®~~fl~~m*~~~
~~-~®·~!II~®TQti~~~~*
[email protected]_~~~fl~.:Z~Jl(ll27)
2. Jltt - ~~~fl~~tf*A.:Z~ii!II~CD
~~~-MBLZ~~~~!II~®'~
fl ' L """F311l~*~·~BUI~.:Z o ~!l
tt~m•~fl·~~*•~oo~~~~fl
MCW~~. MBrd:l L """F .:Z rdl lft~O. 5
mm o (1128 ' 11129)
-18-
ADJUSTTHE LOWER FEEDING
ROLLER HEIGHT
1. Single needle- take offthe side cover of
the rotary hookseat (in the rear). Loosen
the
screw® of the feeding roller holder
and the fixing screw® of the adjusting
knob ofthe feeding roller holder. Use a
screw driverto adjustthe feeding roller
height by turning the adjusting knob@ of
the feeding roller holder. (Fig. 27)
11127/Fig. 27
2. Two needles- loosen the 2 screws CD of
the feeding roller holderA, and the 2
screws® of the feeding gear B. Then,
moving the feeding roller B
up and down
to adjust. After that, tighten the screws CD
of the feeding roller holder A, and adjust
the distance between feeding roller C and
feeding gear Bto be 0.5 mm. (Fig. 28, Fig.
29)
11128/Fig. 28
()
11129/Fig. 29
I--------------------------------------------------------------------------------------------
~1\J~:J!I:iJJfi ADJUST THE HOOK OPENER
I
tiQ~Mm~~~~A®ft~Mti*~~z
lli·A·ti·~-~~$U~@·Q~~~$
@' iflmAW~:BJi~zrd:!Pl~0.1- 0.3 mm o
(ia30)
-19-
Rotate the pulley until the stroke
of the hook
opener is atthe position
A, the farest point
from the needle plate. Then, loosen the screw
@of the opener adjusting ring. Rotate the
adjust ring@) and keep the distancefrom the
opener
to the hook tip to be 0.1- 0.3 mm.
(Fig. 30)
11130/Fig. 30
From the library of: Superior Sewing Machine & Supply LLC

TABLE CUT-OUT OF FLAT BED R718-T1
L
1020
716
1/
•
1\)
0
~
0
l
ll
~
I~
A-A HUifii
__J_ I I I I
_]
~=n
I I I
~
J
4 R1 ~ I
( V\ 4-R19~ ,/ c-. ;;i
~ · 2-R19~ ts-
A
I I T
~
p i\4-R10
U1
w
3-¢8.
5
~
......
jm
+
-f
r-- 1~ ~
¢19
~
f=
ss-cvr ~ ~~
262~
~
v
195--
r--
A 180
// /!) I I
l
.....
~ I/ A
0
1
.6' 1 4-R6?
¢18
c c ¥ m
~
1\)
40 I
..,....,
:b
It>
II
..... .....
lf-o
d
0 j
~
.1. 11 .I .I ·
Hl
. 11
.j
COl-" I-"
1\)
1\)
~~ t11
w~--"1\l
0 co U1 coo CO<O ~
0
t11CO
U1
(J)
W t110
OOt>
0
'U1
~ ·
R17
R20 R25 )'
~
~
lj
I~
-20-
[t;
395
320
311
236
189
162
50
5
5
0
c-c ti
(/)
1"'1
3::
.....
I
(/)
c
ID
~
::0
G)
1"'1
0
CONTENTS
§-m
/A.
1.*1t1~fUR~~Ji*ftf:
MAIN FRAME AND COVER PARTS 22
2.--~~--
THREAD TENSION MECHANISM 24
3.¥fillJ:B#.m•m SINGLE DIRECTION BEARING SHAFT MECHANISM
26
4.Mti*RilfM ROLLER PRESSER FOOT MECHANISM
28
5.7C~I!-
THREAD TAKE-UP LEVER MECHANISM 30
6.J: .W ~ .11l1!# M tl tl
UPPER SHAFTAND BALANLE WHEEL MECHANISM
32
1.J:ii,D-I!M UPPER SIDE SHAFT MECHANISM
34
a.tt•••
NEEDLE BAR MECHANISM 36
9.~.5lMI!tl
NEEDLE BAR FEED MECHANISM 38
1O.jlfl1ftl. PRESSER FOOT BAR MECHANISM 40
11 .ez i!Wi11i1l ~t m TIMING BELT DRIVING MECHANISM
42
12.1113~~--
STITCH ADJUSTER MECHANISM 44
13 .• i!11:11J~t•
FEED SHAFT MECHANISM 46
14.Mttifti'IM CLUTCH SET MECHANISM
48
15.¥~~~--
BEDPLATE FEED MECHANISM
50
1 6.~Jm11M1111JIIM
BEDPLATE GEAR FEED MECHANISM 52
11 .lcil~~ ~mHiiD~tm
LEFT AND MIDDLE FEED MECHANISM 54
1B.lci~Jm1111JIIM
LEFT BEDPLATE FEED MECHANISM 56
1 9.~il.mHIIbllfM
RIGHT SIDE BRACKET MECHANISM
58
2o.¥fill 11 M11111 liM
FEED MECHANISM 60
21 .~ii.JIHIIJJIIM
RIGHT BEDPLATE FEED MECHANISM 62
22.~J*j!jc# SPECIAL PARTS 64
23 .!Jf;J f-1:
ACCESSORIES
66
24 .IJ!JJIHI PRESSER FEET 68
-21-
From the library of: Superior Sewing Machine & Supply LLC

Series
Sii=IUBFI
PARTS LIST R718K/R728K
1
10-$
·-~
/
11
15
I
Subject
MAIN FRAME AND COVER PARTS
*lltlm~Htii*ftJ:
9
-~
I
-8
~
~
I
14
-22-
Page
1/2
Date
2013/6/27
Series Subject Page
Sii=IUBFI
2/2
PARTS LIST R718K/R728K
MAIN FRAME AND COVER PARTS
*lltlm~Htii*ftJ:
Date
2013/6/27
Amt.req
Ref. No Part No. Name of Part
R718K R728K
Remarks
1 119687 Face Plate
liD~
1 1
2 108246
Screw
~~*'*'
1 1
3 108234
Screw
t-'*'*'
1 1
4 168061
Thread Take-up Cover
~H~
1 1
5 210210
Screw
~~*'*'
1 1
6 119027 4
Hole Thread Retainer
II91U~MH*
1 1
7 314946
Screw
~~*'*'
1 1
8 119039
Arm Side Cover
:k~.1Hi9>t&
1 1
9 700335
Screw
~~*'*'
2 2
10 118430
Thread Guide Wire
~~*~*
1 1
11 700335
Screw
*'-*'*'
1 1
14 119686
Thread Guide Wire
~~'R~*
1 1
15 700335
Screw
~*'*'
1 1
16 119092
Bracket
l!i!IJEJf§ll:H
1 1
17
108285-1
Screw
~*'*'
2 2
18 119091
Bottom Cover
~~:lm
1 1
19 108225
Screw
~~*'*'
5 5
-23-
From the library of: Superior Sewing Machine & Supply LLC

Series
Sii=IUBA
PARTS LIST R718K/R728K
2-
1
r
4
3
~~~ {)2-13
2-12 It
/ 2-10~
2-11
2-9~
2-8---~
r
2-7
~
6-----0 ~-5
2-11
-24-
Subject
Page
1/2
THREAD TENSION MECHANISM
Date
2013/6/27
FOR R728K
FOR R718K
Series
Subject
Page
Sii=IUBA
2/2
THREAD TENSION MECHANISM
PARTS LIST R718K/R728K
--~~--
Date
2013/6/27
Amt.req
Ref. No Part No. Name of Part
R718K R728K
Remarks
1 118553 Tension Releasing Pin
fi~m
1 1
2 119171 Thread Tension Regulator Assy.
~ ~t5~!iliMJ.
0 1
(3-1~ 21)
2-1
119171-1
Nut
!Ill~~
2 2
2-2 119171-2
Spring Guide Assy
~~-*~
1 2
2-3
119171-3
Tensin Spring
~~~-·
1 2
2-4 119171-4
Thread Take-up Spring
m~~••
1 1
2-5
119171-5
Tension Disc
~~-
2 4
2-6 119171-6
Thread Tension Stud
~~!Ill**~
1 1
2-7 119171-7
Screw
•**
1 1
2-8 119171-8
Thread Tension Regulator Bushing ~--~
1 1
2-9 119171-9
Tension Releasing Pin
fi*im 1 1
2-10
119171-10
Tension Releasing Pin
f§*i.m
1 1
2-11 119171-11
Tension Release Plate
~--;t&
1 1
2-12
119171-12
Screw
!Ill~
2 2
2-13 119171-13
Tension Release Spring
~;t&~--
1 1
2-14
119171-14
Nut
!Ill~~
1 1
2-15 119171-15
Upper Thread Tension Plate
J:.~ JM ::h ~&
1 1
2-16 119171-16
Thread Tension Stud
~~!Ill**~
1 2
2-17 119171-17
Thread Guide Bracket
~~~Le
1 2
2-18 119171-18
Thread Guide Disc
~~~LIIIM
1 2
2-19
119171-19
Thread Guide Spring
~~~--
1 2
2-20 119171-20
Thread Guide Cap
~~~LI*Jji
1 2
2-21
119171-21
Screw
!Ill~
1 2
2-22 119171-22
Tension disc Washer
~~~~-
1 2
2-23
119171-23
Screw
!Ill~
1 0
2-24 119171-24
Screw
!Ill~
0 1
3 119766
Thread Tenison Regulator Assy.
¥~t5~!il*~
1 0
(3-1~ 21)
3-4 119766-1
Thread Take- up Sping
m~~••
1 0
4 175096-1
Screw
!Ill~
1 1
5 700412
Screw
!Ill**
1 1
6 700412-1
Bushing
ijllfJ.I 1 1
-25-
From the library of: Superior Sewing Machine & Supply LLC

Series Subject Page
Sii=IUaFI
1/2
Series Subject Page
Sii=IUaFI
2/2
PARTS LIST R718K/R728K
SINGLE DIRECTION BEARING SHAFT MECHANISM
~icJtS**lmMm
Date PARTS LIST R718K/R728K
SINGLE DIRECTION BEARING SHAFT MECHANISM
~icJtS**llll~tm
Date
2013/6/27 2013/6/27
Amt.req
Ref.No Part No. Name of Part
R718K R728K
Remarks
~-6
@)-8
o-1
@--'{
©-7
SJ-2
5
~
©-8
~-6
-4
1 660290 Retaining Ring
C~t!:IJ.I
2 2
2
119158 Bearing Bracket
.IE:It&**~
1 1
119158-1
Bearing Bracket
(for· MS-119803) 1 1
3
756901
Bearing
t&**
1 1
4
119150
Bearing Set
.rE]t&***.H.
1 1
(1~ 3)
119150-1
Bearing Set (for ·MS-119150) 1 1
5
108294
Screw
·~~
1 1
6
640210
E-Ping
E~t!:IJ.I
4 4
7
119159
Washer(l.O)
.E)
2 2
@)-3
u-12
u-12
o-1
-14
-14
7-1
119160
Washer(1.4)
.E)
2 2
8
119886 Washer(0.1)
.E)
2 2
8-1
119961 Washer(O.lS)
.E)
2 2
8-2
119962
Washer(0.2)
.E)
3 3
8-3
119963
Washer(O.OS)
.E)
2 2
9
119507
Link
.IE:Iilff 2 2
B-13
e-13
10 174176
Ssrew
·~*
4 4
11
119087
Oil Felt
5mmm
4 4
12
061014
Needle Bearing
~tl!Xt&**
2 2
13
119505
Free- Wheeling
¥IE:It&**~
2 2
(12, 13)
14 119506
Free Bearing
¥IE:It&***.H.
2 2
15
119503
Shaft
¥IE:It&**'lll
1 1
11
@)-7
~>6
~-11
~
15
10
~,---10
@-7
~
0
11-~
-26- -27-
From the library of: Superior Sewing Machine & Supply LLC

Sii=IUBA
Series Subject
ROLLER PRESSER FOOT MECHANISM
PARTS LIST R718K/R728K laJijftlt.
1(Large)
I
4-- c
6-4-
6-5---'--
1
...
9-6
10-S
10-1- @
I
10-S
11-~
17
I
20
~
\
~
-12
©-16
21
2 (Middle)
I
4--c
6-4-
6-5 ---'-1 ___ •
I
9-CQ)
I
10-~
10-1-@)
I
10-~
11--©
18
I
1@-16
ytf
~
-28-
11-~
19
I
ytf
~
Page
1/2
Date
2013/6/27
~16
Series
Subject
Page
Sii=IUBA
2/2
PARTS LIST R718K/R728K
ROLLER PRESSER FOOT MECHANISM
la&j§lt. Date
2013/6/27
Amt.req
Ref. No Part No. Name of Part
R718K R728K
Remarks
1 119803 Roller Presser Assy. (large)
~~~(:*::)
1 1
2
119803-1
Roller Presser Assy. (Middle)
~~~(~)
1 1
3 119802
Roller Presser Assy. (Small)
~~~ ( Jj\)
1 1
4 119469
Spring Washer
.It~fti
1 1
5 033145
Pin
zr.n:m
1 1
6 175109
Gear
-~
1 1
6-1 175109-1
Gear Presser Shaft
'fttUih
1 1
6-2 175109-2
Gear
-~-
1 1
6-3 175109-3
Gear Presser ShaftSeat(Front)
~~.W~(iitr)
1 1
6-4 175109-4
Gear Presser Shaft Seat ~~.w~ ( ql)
1 1
6-5 175109-5
Ball
jld~ 1 1
6-6 175109-6
Screw
ffil~~
1 1
6-7
175109-7
Screw
ffil~~
1 1
7 175107
Gear
-~
1 1
7-1 175107-1
Gear Presser Shaft
'fti!J.W
1 1
7-2 175107-2
Gear
-~-
1 1
7-3 175107-3
Gear Presser Shaft Seat
~~.w~
1 1
8 175108
Gear
-~
1 1
8-1
175108-1
Gear Presser Shaft
'fti!J.W
1 1
8-2
175108-2
Gear
-~-
1 1
8-3
175108-3
Gear Presser Shaft Seat
~~.w~
1 1
9 664290
Retaining Ring
C~UI=III
1 1
10 133116
Ball Bearing
51l~.W*
1 2
10-1 133116-1
Washer
-~
1 1
11 518210
Retaining Ring
C~WJI=III
1 1
12 119953
Roller Presser Bracket
~~~
1 1
13 119943
Roller Presser Bracket
~~~
1 1
14 119956
Roller Presser Bracket
~~~
1 1
15 210043
Screw
ffil~~
1 1
16 119491
Washer
-~
1 1
17 119807
Guide Seat
~~it~~(:*:)
1 1
18 119955
Guide Seat
~~it~~(~) 1 1
19 119954
Guide Seat ~~it~~ (Jj\ ) 1 1
20 173174
Screw
-~~
2 1
-29-
From the library of: Superior Sewing Machine & Supply LLC

Series Subject Page Series Subject Page
Sii=IUaA
2/2
Sii=IUaA
1/2
PARTS LIST R718K/R728K
THREAD TAKE-UP LEVER MECHANISM
~~- ..
Date PARTS LIST R718K/R728K
THREAD TAKE-UP LEVER MECHANISM
~~- ..
Date
2013/6/27 2013/6/27
Amt.req
Ref. No Part No. Name of Part
R718K R728K
Remarks
22
1 118084
Thread Take- up Assy
~W*H
1 1
(2~ 19)
2 119009
Take- up Lever Support Stud
~Wm¥$dl
1 1
3 168039
Washer
~~
2 2
4 215022
Needle Bearing
~t~:l:***
2 2
5 119008
Take- up Frame
~w~
1 1
~:------22
~
21-~
1
6 119762 Take-up Crank Pin
~WitH*~
1 1
7 119049
Bushing
~m
1 1
8 119007
Take-up Leer
~w~
1 1
9 167569
Ball Bearing
~a:~:***
1 1
10 167570
Ball Bearing
~a:~:***
1 1
11 119006
Take- up Lever
~w
1 1
(7~10)
12 168046
Washer
m.~t
1 1
13 168047
Screw
!k~**
1 1
14 610210
Retaining Ring
C~t!:l~
2 2
15 039177
Screw
!k~**
1 1
16 119013
Needle Bar Connecting Stud
~t·l1il~3
1 1
17 119765
Needle Bar Connecting Crank Rod ~t-ilft~
1 1
18
119763
Washer
jJ'§] 1 1
3 4
2 I I
~®®~
v----- ----
5
4
7
I
17
14
~~
11--
~
19 218080
Needle Bearing
~t~:l:***
1 1
20 118518
Needle Bar Guide Slide Block
~Nf~~ 15~i.l
1 1
21 168041
Bushing
~W$dl~~
1 1
22 314220
Screw
!k~**
3 3
12
13 I
~~
14-~
15 16
~
20
-30- -31-
From the library of: Superior Sewing Machine & Supply LLC

Series
Subject
Page
Sii=IUaFI
1/2
UPPER SHAFT AND BALANLE WHEEL MECHANISM
PARTS LIST R718K/R728K
4
9
I
@)
f.tl*i220xl
~~~220xl
IJ--5
12 11
~
~
•
14
13
-32-
7-1
..tllb .. Blffll~ ...
Date
2013/6/27
u
I
8
13
15 I 16 11 18
~ dJ~1
~
I
13
17
22
~~
Series
Subject
Page
Sii=IUaFI
2/2
PARTS LIST R718K/R728K
UPPER SHAFT AND BALANLE WHEEL MECHANISM
..tllb .. Blffll~ ...
Date
2013/6/27
Amt.req
Ref. No Part No. Name of Part
R718K R728K
Remarks
1
119702-2
Crank Cam 8 ..
1 1
2 130224
Screw
-~~
2 2
3
119702-3
Screw
-~~
1 1
4
119702-4
Screw
-~~
1 1
5 700510
Screw
-~~
1 1
6
119702-5
Bushing
...t$ib~~
1 1
7
119702-1
Upper Sh ft ...t$ib
1 1
7-1
119702A
Upper Sh ft Assy
...t$ib~~*~
1 1
8
119702-6
Bushing
~!;
0 1
9 018643
Ball Bearing
)t~:l:g**
1 1
10 069160 Timing Belt
Bt~
1 1
10-1 169160-1
Timing Belt
Bt~
1 1
11 119707
Timing Belt Wheel
ilff~Bt~--
2 2
12 335902
Screw
-~~
2 2
13 335902-1
Screw
-~~
6 6
14 016153
Ball Bearing
)t~:l:g**
2 2
15 119705
Upper Shaft Bushing
...t$ib~~
2 2
16 069746
Bushing
...t$ib~~
1 1
17 168480
Washer
.iS]
2 2
18 210265
Screw
-~~
1 1
19 175048
Feed Regulator Scale
&!31~m!;
1 1
20 170913
Pulley Blance Wheel
Bt~rnk
1 1
21
341902
Screw
-~~
2 2
22 210287
Screw
-~~
1 1
-33-
From the library of: Superior Sewing Machine & Supply LLC