SunStar KM-1060BL, KM-1062BL-7, KM-1060BL-7, KM-1062BL User Manual

SSUUNNSSTTAARR MMAACCHHIINNEERRYY CCOO..,, LLTTDD..

USER’S
MANUAL

KM-1060BL Series
KM-1060BL

High Speed, 1-Needle, Unison Feed
Lock Stitch Machine

KM-1060BL-7

High Speed, 1-Needle, Unison Feed Lock Stitch
Machine with an Automatic Thread Trimmer

KM-1062BL

High Speed, 2-Needle, Unison Feed
Lock Stitch Machine

KM-1062BL-7

High Speed, 2-Needle, Unison Feed Lock Stitch
Machine with an Automatic Thread Trimmer

1) FOR PROPER AND CONVENIENT USE OF
THE MACHINE, THOROUGH READ THIS
MANUAL BEFORE USE.

2) KEEP THIS MANUAL IN A SAFE PLACE
FOR FUTURE REFERENCE IN CASE THE
MACHINE BREAKS DOWN.

MMMMEE--005500662299

Best Quality

Best Price

Best Service

SSUUNNSSTTAARR MMAACCHHIINNEERRYY CCOO..,, LLTTDD..

R

1.

Thank you for purchasing our product. Based on the rich expertise and
experience accumulated in industrial sewing machine production, SUNSTAR
will manufacture industrial sewing machines, which deliver more diverse
functions, high performance, powerful operation, enhanced durability, and
more sophisticated design to meet a number of user’s needs.

2. Please read this user’s manual thoroughly before using the machine. Make
sure to properly use the machine to enjoy its full performance.

3. The specifications of the machine are subject to change, aimed to enhance
product performance, without prior notice.

4.

This product is designed, manufactured, and sold as an industrial sewing
machine. It should not be used for other than industrial purpose.

Contents

Safety rules for machines

1. Specifications

1) Sewing machine

2) Motor

3) Peripheral automation devices (optional)

2. Installation

1) Oil fan

2) Machine head

3) Belt tension adjuster

4) Belt cover

5) Program unit (thread trimming type)

6) Air pressure-related parts and functions (thread trimming type)

7) Thread spool stand assembly

8) Knee-lifting pad (thread non-trimming type)

9) Lubrication check

10) Check for stop position of the sewing machine (thread trimming type)

11) Back tack button (thread trimming type)

12) Check for switch functions (thread trimming type)

3. Operation and functions of the Servo motor

1) Operation and control of the pedal

2) Setting potentiometer

4. Control and adjustment of the sewing machine

1) Inserting a needle

2) Inserting/separating a bobbin

3) Winding lower thread

4) Routing upper thread

5) Thread tension adjustment

6) Adjustment of the stitch length

7) Adjustment of lifting amount of main and auxiliary presser foot

8) Pressure adjustment of the presser foot

9) Timing adjustment of needle and feed dog

10) Height adjustment of feed dog

11) Timing adjustment of needle and hook

12) Clearance adjustment of hook and opener

13) Position adjustment of hook needle guard

14) Height adjustment of the auxiliary presser foot

15) Timing adjustment of main·auxiliary presser foot and needle

16) Adjustment of the thread trimming device

17) Adjustment of the thread tension release

18) Lubrication adjustment of hook

19) Replacement of the gauge

5. Cause of troubles and troubleshooting

1) Sewing machine troubleshooting

6. Table drawing

8

8
8
8

44

99

9
9
10
10
10
11
12
12
13
14
15
16

1177

17
18

1199

19
19
20
20
21
23
24
24
25
26
26
27
28
28
29
30
35
36
37

3388

38

4400

4

Safety rules for machines

Safety labels in the manual are categorized into danger, warning and caution. Failure to follow the safety
rules may result in physical injuries or mechanical damages. The safety labels and symbols are defined
as follows.

The meaning of the safety marks

Instructions here shall be observed strictly. Otherwise, the user will be killed or
suffer severe physical injuries.

Instructions here must be observed, or the user could suffer fatal or severe
physical injuries.

Instructions here should be observed, or the user could face physical injuries or
mechanical damages.

Danger

Warning

Caution

The meaning of marks

This mark means a ‘must-not’

This mark means a ‘must’for safety

This mark means that an electric shock may be caused if the instruction is not
followed properly.

5

1-1) Machine mobilization

Danger

1-2) Machine installation

Caution

1-3) Troubleshooting

Danger

When the machine is in need of repair, only our authorized service technicians must
handle it.

ⓐ Before cleaning and repairing the machine, shut off the power supply and wait four

minutes for the machine to discharge completely.

ⓑ No part of the machine or specifications may be modified without prior consultation

with our company. Any such modification could risk safe operation of the machine.
ⓒ In case of repair, replace only with standard OEM parts from SunStar.
ⓓ After repair, put safety covers back on the machine.

Only personnel with a full understanding of the safety rules should move the machines.
The following directions must be observed when delivering the machines.

ⓐ At least two or more people should move the machine.
ⓑ Before delivering the machine, thoroughly wipe off the oil on the machine to prevent

accidents.

Physical damages such as functional difficulties or breakdowns may occur depending on
installation conditions of the machines. Be sure to heed the following conditions.

ⓐ Remove the packing from top to bottom. Watch out for nails on the wooden box.
ⓑ Install a climate controller and clean it regularly to prevent dust and moisture build-

up from contaminating and corroding the machines.
ⓒ Keep the machines away from direct sunlight.
ⓓ Keep a minimum distance of 50cm between the machine at both sides and backside

and the wall to secure sufficient space for repair.
ⓔ Risk of explosion

Do not operate the machine near areas with danger of explosion. Refrain from running

the machine in the vicinity of risky places e.g., where a large quantity of aerosol-

spraying products or oxygen are handled, unless specific guarantees are given otherwise

for the operation of the machine to prevent explosion at such places.
ⓕ The user should install an illuminator in the work area for the machine does not come

supplied with any lighting apparatus due to the specific features of the machine.

[Note] Details of the machine installation are laid out in No. 2 Installation.

6

1-4) Machine operation

Warning

ⓐ Safety label: Safety instructions for machine operations
ⓑ Thread take-up spring cover: A device designed to prevent the human body from

coming in contact with the thread take-up spring

ⓒ Belt cover: A device intended to avoid potential risks of getting hands, feet or clothes

jammed by the belt

ⓓ Finger guard: A device built to keep fingers away from the needle.

1-5) Safety device

Warning

ⓓ

ⓐ

ⓒ

ⓑ

KM-1060BL Series are intended to be used for industrial purposes for sewing textiles and
other similar materials. Carefully study the following instructions before operating the
machine.

ⓐ Read the manual thoroughly and understand the instructions fully before use.
ⓑ Put on proper safety garments.
ⓒ While the machine is in motion, keep your hands or any part of your body away from

moving parts, e.g., needle, hook, thread take-up spring and pulley, etc.
ⓓ Do not remove any form of safety covers while the machine is in use.
ⓔ Be sure to connect the ground (earth) wire.
ⓕ Before opening electric boxes such as the control box, shut down the power supply and

make sure the power switch is in “off”mode.
ⓖ Stop the machine before threading the needle or checking after sewing work is finished.
ⓗ Never turn the power switch on with the pedal down.
ⓘ Do not use the machine if the cooling fan is clogged. Clean the air filter embedded in

the control box at least once a week.
ⓙ Keep the machine away from strong electromagnetic fields such as high-frequency

welding machines.

Caution

Always start the machine with safety covers in place since
fingers or hands could be injured or cut off by the belt. Turn off
the power switch when conducting a regular check on the
machine.

7

“Caution”is attached on the machine for safety. Read the directions of “caution”carefully before

running the machine.

1-6) Location of caution mark

1-7) Contents of “caution”

Notice

CAUTION

경고

Do not operate without finger guard and
safety devices. Before threading, changing
bobbin and needle, cleaning etc. switch off
main switch.

손가락 보호대와 안전장치 없이 작동하지
마십시오.
실, 보빈, 바늘교환시나 청소전에는 반드시 주
전원의 스위치를 꺼 주십시오.

CAUTION

경고

Do not operate the machine without finger
guard and safety devices. Turn off the
main switch before threading, changing
bobbin and needle or cleaning.

손가락 보호대와 안전장치 없이 작동하지 마
십시오.
실, 보빈, 바늘교환시나 청소전에는 반드시
주전원의 스위치를 꺼 주십시오.

CAUTION

경고

High voltage will cause injury. Power
off, unplug and wait at least 6
minutes before opening this cover.

고압 전류에 의해 감전될 수 있으므로 커버
를 열 때는 전원을 내리고 전원 플러그를 뽑
고 나서 360초간 기다린 후 여십시오.

[Location of caution mark]

CAUTION

경고

Hazardous voltage will cause injury.
Be sure to wait at least 360 seconds before
opening this cover after turn off main switch
and unplug a power cord.

고압 전류에 의해 감전될 수 있으므로 커버를
열 때는 전원을 내리고 전원 플러그를 뽑고 나
서 360초간 기다린 후 여십시오.

8

1

Description KM-1060BL-7 (trimming type) KM-1060BL KM-1062BL

KM-1062BL (Trimming type)

1) Sewing machine

Specifications

Application
Maximum stitch length
Stroke distance of needle bar
Lifting amount of presser foot
Needle type
Hook type
Reverse sewing
Feeding device
Lubrication
Specifications of bed
Power supply

Medium heavy to very heavy material

9mm

33.8mm

Maximum of 7 mm

DP x 17 #22 (#14~#25)

Horizontal hook

Reverse button & lever Reverse lever Reverse button & lever Reverse lever

Total feeding (needle, feed dog, upper feed presser foot)

Automatic oil supply

568 x 178 mm (working space of 300 mm)

Description

Lifting amount of the main and sub presser foot

Sewing speed

Sewing speed

1
2
3
4

1.0 mm~2.4 mm

2.5mm∼3.9mm

4.0mm∼4.7mm

4.8mm∼7.0mm

3500spm
3000spm
2500spm
2000spm

Note) 1. The sewing speed automatically changes by the default value of the lifting amount of the main and sub presser foot (trimming type)

2. When using the stitch length longer than 6mm, set the sewing speed at under 2,000 spm in the program unit box.

3. Since automatic speed control is not available for non-trimming types, the sewing speed must be controlled manually at the value shown in the table
above. When using the stitch length longer than 6mm, be sure to set the sewing speed at under 2,000 spm to avoid mechanical damages.

2) Motor

Watt
550 W
550 W
550 W

Hertz
50/60 Hz
50/60 Hz
50/60 Hz

Model

HEC-1706 (Single Phase)

HEC-1705 (Triple Phase)

Voltage

110V / 220V

220V / 380V

Watt

400W
400W

Hertz

50/60Hz
50/60Hz

A. Specifications of Servo motor

B. Specifications of clutch motor

Model
S3M55-1B
S3M55-2B
S3M55-3B

Voltage
Single Phase 110V
Single Phase 220V

Triple Phase 220V

1 phase 110/220 V

3 phase 220V

1 phase 110V/220V

3 phase 220V

1 phase 110/220V

3 phase 220V/380V

1 phase 110/220V

3 phase 220V/380V

ApplicationUseModelName

Production Counter

Material edge sensor

Standing pedal

SEDG-1
SEDG-2

SPDL-1

SPDL-2

A device that senses the edge or thickness of the sewing
material to stop the machine without manual pedaling.
Available in two types: SEDG-1 for edge sensing type and
SEDG-2 for thickness sensing type.

A device needed when only one operator runs several
sewing machines. Pedals for acceleration, thread trimming,
presser foot and ascending are built separately. Two types,
SPDL-1 and EDPL1 for fixed speed type and SPDL-2 and
EDPL-2 for adjustable speed type are available.

Basic type PU

Basic Type PU/

Option Type PU

SCOUN-1

A counting device which indicates the completed quantity
on the program unit panel, including added, subtracted,
corrected or remaining quantity along with other
performance rates.

Basic type PU

3) Peripheral automation devices (optional)

·S :

Servo Motor

·E :

470 Motor

9

2

Installation

1) Oil fan

Fix oil tray① and oil tank② from the accessory box onto oil
fan③ as shown in the Figure 1, then secure the oil fan under
the table④ using six nails.

2) Machine head

Nail the rubber cushion② onto hinge rubber① and four
edges, then install the head hinge③ in the sewing machine
with the head inserted in the bed.

[ Fig. 1 ]

[ Fig. 2 ]

①

②

③

④

③

①

③

②

②

Warning

▶The machine must be installed by a trained technician only.

▶Any electrical wiring must be performed by a qualified technician or agent.

▶The machines weigh over 52 kg. As such, two or more people should carry out the installation.

▶Plug in only after the installation is complete. If the operator mistakenly steps down on the pedal

with the plug in, the machine will start automatically and can cause physical injuries.

▶Connect the ground (earth) wire. An unstable connection may result in an electric shock or a

malfunction.

▶Place the belt cover on top of the machine

▶Use both hands when bending the machine backward or returning it to the normal position.

Using only one hand can lead to physical injuries due to the weight of the machine.

10

4) Belt cover

A. Insert the head groove of belt cover support screw② into

the lower grooves of the belt cover “A”①. Fix the belt
cover onto the machine body and the top cover with two
belt cover fixing screws③.

B. After placing the belt cover “B”② into the belt cover “A”

①, secure it onto the machine body using three belt cover
fixing screws.

5) Program unit (thread trimming type)

A. Use four fixing screws③ to attach the bracket② onto the

program unit①.

B. Fasten the bracket② onto the machine body, using two

fixing screws④ and washers⑤.

③

①

②

③

④

⑤

②

②

①

[ Fig. 4 ]

[ Fig. 5 ]

[ Fig. 6 ]

3) Belt tension adjuster

After installing the motor③, slacken both fixing nuts① and②
just enough to give adequate tension to belt④. Firmly tighten
the fixing nuts① and② consecutively.

①

④

③

②

[ Fig. 3 ]

①

11

6) Air pressure-related parts and functions (thread trimming type)

A. Installation

a) Use a screw to fix the pneumatic unit①onto the lower side of the table as illustrated in the Fig.
b) Connect five pneumatic tubes from right to left as shown in the Fig. Tie the tube with other lead lines using band clip

②

.

Automatic presser foot-lifting cylinder

S1P

S2P

S5S

S3L
S3R

CylinderLabel mark

Reverse sewing cylinder

Conversion cylinder of

lifting amount of presser foot

Conversion cylinder for stitch length

[ Fig. 7 ]

①

②

Function

Converts the lifting amount of the main and auxiliary
presser foot to the maximum 7 mm in an instant

Performs reverse sewing

Raises the presser foot to as high as 16 mm off the
surface of needle plate

Performs sewing in accordance with the settings of the
lower stitch length dial when this particular cylinder
begins to run among two stitch length dials of the
machine

Caution

▶When it becomes necessary to regulate the machine with the power on or with the air injected,

exercise extreme caution for safety.

▶Set the air pressure at 0.5 Mpa.

12

7) Thread spool stand assembly

B. Adjustment of pneumatic pressure

a. Adjust the pressure by pulling knob② from pneumatic

filter①.

b. Control the pneumatic pressure at 0.49 MPa (5kgf/cm

2

)

and put the knob② back to its original position. .

Secure the thread spool stand assembly① onto the table using
washer② and nut③ on the right side.

8) Knee-lifting pad (thread non-trimming type)

A. Place the socket① of the knee-lifting pad (ass´y) from the

accessory box into the knee-lifting shaft②.

B. Loosen the bolt③ to set a position comfortable for knee

lifting and then re-tighten it.

①

[ Fig. 8 ]

[ Fig. 9 ]

[ Fig. 10 ]

①

②

②

③

①

②

③

[Caution]
Take out the knee-lifting pad (ass´y) before pushing
the machine backward.

13

A. Bed part

Loosen oil cap screw① to fill up the oil tank to the gauge
line③ of the oil gauge②. Afterwards, tighten the screw①
firmly.

B. Face plate

Dismantle the facet by unfastening two fixing screws of the
facet and add the sewing machine oil into an arrow
position. Reassemble the facet afterwards.

9) Lubrication check

[ Fig. 11 ]

[ Fig. 12 ]

①

②

③

“LOW”

“HIGH”

Caution

▶ Plug in only after oil supply is finished. If the operator mistakenly steps on the pedal with the

plug in, the machine will start automatically and can cause severe injuries.

▶ When handling lubricants, wear protective glasses or gloves to avoid contact with your eyes or

skin. Inflammation may be caused otherwise. Never drink lubricants since they can cause
vomiting or diarrhea. Keep it out of the reach of children

▶ Operate the machine only after adding oil when the machine is being used for the first time or

has been left unused for a long time.

14

Check for the machine stop position after moving the needle
up and down by pushing the reverse button①. See if the sign

“B”is shown on the window② of the belt cover when the

needle stops in an up position. If not, adjust the position of the
magnetic holder embedded in the pulley, for trimming
function can be adversely affected when the position is not
adequate.

10) Check for stop position of the sewing
machine (thread trimming type)

D. Oil window check

After applying oil to each friction parts, turn on the main
switch and operate the machine at a low speed for five
minutes to check the oil flow in the oil hose passing the oil
window. The oil flow can be checked after about one
minute of machine operation. To ensure the machine is
maintained in an excellent condition, run the machine at
2,000 spm/minute for the first 4~5 days and at a normal
speed afterwards.

[ Fig. 14 ]

[ Fig. 15 ]

①

②

C. Hook part

Open the slide plate (right)① to add the sewing machine
oil into an arrow-pointed position. Close the slide plate①
after oiling.

[ Fig. 13 ]

①

15

B. Check for down-stop position of needle bar

The down-stop position of needle bar is where the carved
sign① of the needle bar coincides with the tip of the needle
bar frame②. If the position is not suitable, move the
magnetic holder③ built in a carved N.D. sign of the pulley
to the left and right for adjustment.

[ Fig. 17 ]

①

③

②

Pressing the back tack button or reverse button① during
forward sewing will start reverse sewing immediately. When
you stop the machine and restart it by stepping down on the
pedal with the reverse button① already pressed down, you can
perform reverse sewing from the beginning. When the
machine is in a “stop”mode, you can change up-down
position of the needle bar by pressing the reverse button.
Lightly pressing the button once will stop the needle bar in a
high position. Pressing the reverse button① twice within less
than a second will stop the needle bar in a low position. In
short, the button delivers two functions: one for reverse sewing
and the other for converting vertical position of the needle.

11) Back tack button (thread trimming type)

[ Fig. 18 ]

①

A. Check for up-stop position of needle bar

The up-stop position of needle bar is where the take-up
lever① stops 2mm off of its highest position. For
adjustment, move the magnetic holder② built in a carved
N.U. sign of the pulley to the left and right.

[ Fig. 16 ]

①

②

2mm

16

12) Check for switch functions (thread trimming type)

[ Fig. 19 ]

: Conversion switch for presser foot lifting level

- When you press this switch, the light will come on.

The lifting amount of the presser foot will
automatically change to the maximum 7 mm
regardless of what the set-up data is in the top
cover dial. When you press the switch back, the
light will go off and the sewing machine will run at
the setting value as displayed in the top cover dial.

: Automatic back tack (B/T) selection switch

- This switch is designed to select Insert/Delete of

the start and end of B/T sewing.

: Switch for stopping needle bar at high position

- designed to raise the needle bar to the highest

position regardless of the stop position of the
sewing machine

: Conversion switch for the stitch length

- While this switch is on, the machine will run at

the setting value of the lower dial and when off,
the machine will operate at the setting value of
the upper dial.

①

②

③

④

① ② ③ ④

17

1) Operation and control of the pedal

A. Loosen fixing nut② and turn pressure-adjusting screw①

in a clockwise direction as shown in Figure 20. The
machine will start running at a backward step 1. The pedal
will become heavier when the automatic presser foot is
raised. Likewise, the pedal will become lighter when the
screw is shifted in a counterclockwise position. After
adjusting the weight of the pedal, firmly tighten the fixing
nut②.

B. Unfasten the fixing nut④ and turn the pressure-adjusting

screw③ clockwise, then the machine will begin to run at a
backward step 2. The pedal will become heavier when the
trimming device begins to operate, and lighter when the
screw is turned counterclockwise.

C. In adjusting the pedal pressure while sewing forward,

secure the tension spring⑤ onto the left side groove to
decrease pressure and onto the right side groove to increase
pressure.

D. Pedal operation

You can perform various functions with the sewing
machine by moving the pedal (foothold) forward and
backward as illustrated below.

Function

Low-speed

operation

High-speed

operation

Neutral position

Presser foot lift

Trimming operation

When pedal is pressed down at forward step 1

When pedal is pressed down to

the maximum in forward position

When pedal is not pressed down

(Original position)

When pedal is pressed down

at backward step 1

When pedal is pressed down

at backward step 2

Machine rotates at a low speed

Machine rotates at a high speed

Machine stops

Presser foot is lifted

Trimming device starts running

and cuts the thread

Pedal position Peal operation Sewing machine operation

[ Fig. 20 ]

※For more detailed information on operation and functions of the Servo motor, please refer to our manual

Fortuna Ac Servo Motor Series III provided by SunStar.

3

Operation and functions of the Servo motor

①

②

③

④

⑤

Loosen the
screw if the
pedal feels
heavy during
trimming work.

Unfasten the
screw if the
pedal feels
heavy during
running the
presser foot.

Strong

Standard

Weak

Connect the
spring to the
rear-end
groove of
three control
levers if the
pedal feels
heavy during
forward
sewing.

18

Press and button to move to parameter number 27

Turn the dial for adjusting presser foot lifting amount and set it
at 2.5 (mm)

Set at 2.5 (mm) and press the button. The screen will
automatically change with a buzzer sound

Set at 4.0 (mm) and press button. The screen will
automatically change with a buzzer sound

Set at 4.8 (mm) and press button to change the screen
with a buzzer sound

Turn the dial again to set at 4.0 (mm)

Turn the dial once again to set at 4.8 (mm)

After setting is complete, push button to go back to the
initial screen

󳢯Sewing initial screen

󳢯Initial screen for parameter group A

󳢯P1 setting screen for group A item 27

󳢯When dial is turned, the value will be displayed

on

󳢯When dial is turned, the value will appear

on

󳢯When dial is turned, the value will be displayed

on

󳢯P2 setting screen for Group A item 27

󳢯P3 setting screen for group A item 27

󳢯Setting is complete

󳢯Sewing initial screen

2) Setting potentiometer

󳥃󳥃

How to set

󳥃󳥃

Relation between presser foot lifting amount and maximum speed of the sewing machine

▶When setting each step of P1, P2 and P3, be sure to press button to save the set value. Otherwise, the set value will not be saved.
▶The

▶▶

sign from screen 3 to 8 in the above table may vary to some degree depending on the location of the installed potentiometer.

▶ If you turn off the power before completing step 9, you will have to start over again.
▶The set value of the potentiometer will be erased if you initialize. Initialize only when it is necessary. Remember that you have to reset

the potentiometer after initialization.

▶If the potentiometer connector is not linked or the cable is cut, OV will be displayed on the screen.

Presser foot lifting amount

1.0 - 2.5 mm

2.5 - 4.0 mm

4.0 - 4.8 mm

4.8 - 7.0 mm

Maximum speed of the sewing machine

3500 spm

3000 spm

2500 spm

2000 spm (adjustable from group A item 20)

DetailsScreen displayHow to operate

Turn on the power

Press button, then press button while holding down

button to change screen

Sequence

1

2

3

4

5

6

7

8

9

10

19

4

Control and adjustment of the sewing machine

1) Inserting a needle

With the needle groove① facing left as shown in the [Figure
21], insert the needle tip into the upper end of stopper hole②
and fasten the needle with clamp screw③.

A. How to separate

Hold the needle at the highest position. Press the slide
plate stopper, open the slide plate and hold up the bobbin
case holder ② of hook ① to take out the bobbin③.

B. How to insert

IInsert thread-winded bobbin① into the bobbin case②.
Pull the lower thread out by dropping it through the thread
path

ⓐ and the bottom of the shaft tension spring plate③.

Let the lower thread hang about 50 mm. Place back the
bobbin by referring to How to separate, starting from end
to beginning.

2) Inserting/separating a bobbin

[ Fig. 21 ]

[ Fig. 22 ]

[ Fig. 23 ]

②

②

①

①

③

③

ⓐ

③

②

①

[1060BL] [1062BL]

Caution

▶Always turn off the power when mounting a needle. If the operator mistakenly steps on the

pedal while the power is on, the machine will start automatically and can result in physical
injuries.

▶When using clutch motor, be aware that the motor will continue to rotate for a while even after

the power is switched off due to inertia. Start to work on the sewing machine only after the
motor has come to a complete stop.

20

3) Winding lower thread

A. How to wind the lower thread

a) Turn the thread from the backside of the tension

adjusting plate② to the front through the hole①.

b) Bring the thread towards the bobbin

③

and wind it 5~6

times in a clockwise direction, starting from the bottom up.

c) Push the lever④ to make the pulley⑤ touch the V-belt

and start the machine

d) When the lower thread is winded up completely on the

bobbin, the pulley⑤ will automatically separate from
the V-belt.

e) The adequate quantity of lower thread winding is

about 80%.

B. Winding adjustment for lower thread

a) If the lower thread winds irregularly, loosen the screw⑥ to move it left and right. Fasten it back after adjustment.
b) Winding quantity of the lower thread can be adjusted by turning the adjusting screw⑦. Move the screw clockwise for more

quantity and counterclockwise for less quantity.

c) As for adjusting the tension of the lower thread winded on the bobbin, turn the nut⑧ clockwise direction to increase the tension and

counterclockwise to reduce the tension.

4) Routing upper thread

After placing the take-up lever in its highest position, hang the upper thread as shown in the figure.

-For initial sewing, the suitable length of the upper thread tail from the needle hole is about 50 mm.

[ Fig. 24 ]

[ Fig. 25 ]

②

③

④

⑤

⑦

①

⑥

⑧

1060BL 1062BL

Caution

▶Turn off the power switch when routing the upper thread. If the operator mistakenly presses

down on the pedal while switched on, the machine will start automatically and can cause
physical injuries.

▶When using the clutch motor, be aware that the motor will continue to rotate for a while after the

power is switched off. Start to work on the sewing machine only after the motor has come to a
complete stop.

21

5) Thread tension adjustment

A. Tension adjustment of the lower thread

If you turn screw② on the spring plate① mounted in hook
in a clockwise direction, the lower thread tension will
become stronger and when turned in a counterclockwise
direction, weaker.

B. Tension adjustment of the upper thread

a. Tension adjustment of thread-adjusting device

(for 1060 BL type)
As shown in [Figure 27], tension will become heavier
when tension-adjusting nut① of the thread-adjusting
device is turned clockwise, and lighter when turned
counterclockwise.

b. Tension adjustment of thread-adjusting device

(for 1062 BL type)
As indicated in [Figure 28], tension of the left thread will
become stronger when tension-adjusting nut① of the
thread-adjusting device is turned clockwise, and weaker
when turned counterclockwise. If you turn the tension­adjusting nut② clockwise, tension of the right thread will
become stronger, and weaker when turned counterclockwise.

[ Fig. 26 ]

Weak

strong

[ Fig. 28 ]

[ Fig. 27 ]

①

①

Strong

Weak

①

Strong

Weak

②

②

Caution

▶Turn off the power when adjusting the lower thread tension. If the operator mistakenly steps

down on the pedal while switched on, the machine will start automatically and can cause
physical injuries.

▶When using the clutch motor, be aware that the motor will continue to rotate for a while after the

power is switched off. Start to work only after the motor has come to a complete stop.

22

d) Tension adjustment of the take-up lever spring

If you unfasten the nut① in the thread-adjusting device shaft and turn it clockwise at the face groove of the thread-adjusting device
shaft② using a screwdriver, the tension of the take-up lever spring③ will become stronger, and weaker when turned counterclockwise.

e) Timing adjustment of the take-up lever spring

If you loosen the stopper screw ④ and move the guide plate⑤ of the take-up lever spring in a clockwise direction, the operating timing
of the take-up lever spring③ will become faster, and slower when turned counterclockwise.

※ The standard operating timing of the take-up lever spring is when the stopper screw④comes to position at the center of the guide plate ⑤.

[ Fig. 30 ]

[ Fig. 31 ]

①

②

③

④

⑤

③

Weak

Strong

c) Adjustment of the take-up lever spring

If you loosen the stopper clamp screw① and turn the take-up lever spring stopper② counterclockwise as shown in [Figure 29], the
moving range of the take-up lever spring③ will become larger, and when turned clockwise, smaller.

※ The standard moving range of the take-up lever spring is 5~10 mm.

[ Fig. 29 ]

①

②

③

③

23

f) Tension adjustment of the auxiliary thread adjustment device

(for 1060 BL)
If you turn the adjusting nut① of the auxiliary thread-adjusting
device as displayed in [Figure 32] in a clockwise direction, the
needle will have a shorter length thread left after trimming, and
a longer length thread left when turned in a counterclockwise
direction. 50~60 mm is the most appropriate length of the
upper thread tail left in the needle after trimming.

g) Tension adjustment of auxiliary thread adjustment device

(for 1062 BL)
As illustrated in [Figure 33], you can adjust the remaining
length of the upper thread in the needle after trimming by
controlling the adjusting nut of the auxiliary thread-adjusting
device
(left①, right ②)

6) Adjustment of the stitch length

Adjusting dial① and ② designed to control the stitch length can
be set up with two different lengths, and change the stitch length
whenever switch③ is pressed down. After pressing down switch
③ to turn the switch on, the sewing machine will carry out sewing
at the stitch length as set on dial②. When pressing down switch
③ again to turn the switch off, the machine will start sewing at the
stitch length as set on dial①. Set the desired stitch length to a
carved sign ④.

[ Fig. 32 ]

[ Fig. 33 ]

[ Fig. 34 ]

①

Weak

Strong

①

Weak

Strong

②

Caution

▶

The value set on the stitch length dial② should always be smaller than that of dial①. Nonetheless, if
you force turning the dial to set the value of dial② to be greater than that of dial①, the machine can be
severely damaged.

▶

The function of the stitch length dial② is available only for trimming type machines. Stitch length dial①
is installed for non-trimming types.

①

④

④

②

③

24

7) Adjustment of lifting amount of the main and auxiliary presser foot

The lifting level of the main presser foot① and auxiliary presser foot② can be adjusted from 1 to 7 mm by the upper lid dial③. If you
turn the upper lid dial ③ around to a carved sign④ so that the figure on the dial faces the carved sign, the main presser foot① and
auxiliary presser foot② will start a mutual crossing movement as much as the set figure indicates. For trimming types only, when the light
comes on by pressing the switch⑤ on the arm, the mutual crossing movement will change to the maximum value of 7 mm regardless of
the set value indicated on the dial③. When the light goes off by repressing the switch, the movement will change automatically to the set
value on the dial. .

8) Pressure adjustment of the presser foot

If you turn the dial① on the upper part of the faceplate in a clockwise direction, the pressure of the auxiliary presser foot will increase, and
decrease if turned counterclockwise.

[ Fig. 35 ] [ Fig. 36 ]

[ Fig. 37 ]

⑤

④

③

①

Weak

Strong

Operates at the setting value of dial

②

①

25

9) Timing adjustment of needle and feed dog

Set the stitch length to the maximum and place the thread take-up lever① in the highest position. (As a standard, a carved sign “C”will
appear on the belt cover window and the feed dog② will rise to touch the surface of needle plate③. The needle tip④ will move down to
touch the needle plate③.) If the position is not correct, make the adjustment as indicated in the following.

A. Disassemble the bed cover.
B. Loosen the fixing screw of the lower feed cam⑤ to control the position of the feed dog and fasten the screw firmly afterwards.
※ Normally, the No. 1 screw⑥ of the lower feed cam faces the centerline of the lower feed cam connecting rod⑦ when the needle

bar is in the highest position.

[ Fig. 38 ]

①

⑦

⑥

⑤

②

④

③

Caution

▶After disassembling and adjusting a safety device, always place it back to the original position and

check whether it functions as intended.

▶Use both hands when pushing the machine backward or returning it to the original position.

Due to the weight of the machine, your hand can get stuck in the machine if you should slip.

▶When adjusting the machine with the switch on, be sure to pay extreme caution.

▶Only trained engineers must perform troubleshooting or inspection of the machine.

▶For electrical repair or inspection, consult with qualified technicians or agent.

26

11) Timing adjustment of needle and hook

Set the stitch length to a minimum and place the needle 2 mm off of the lowest position. A carved sign “H”will appear on the belt cover
window② and hook tip③ will come to the center of the needle. The appropriate clearance between the needle groove and the shaft tip③
is 0.02~0.1 mm. At this time, the needle guard④ of the hook must not come in contact with the needle.

[ Fig. 41 ]

②

①

③

④

0.02~0.1mm

2mm

H

10) Height adjustment of feed dog

Set the stitch length to a minimum and put the feed dog in the highest position. The needle bar will come down to the lowest position and
the feed dog must be raised 0.5 mm off of the needle plate. If the position is not suitable, make the height adjustment as indicated below.

A. Disassemble the bed cover
B. Unfasten the fixing screw of the lower feed cam①, adjust the position and fasten back the screw tightly.

※ Normally, a carved sign② of the lower feed cam heads up perpendicularly with the needle bar in its lowest position.

[ Fig. 39 ] [ Fig. 40 ]

②

①

27

12) Clearance adjustment of hook and
opener

Bring the opener① to the hook② as close as possible and
loosen the fixing screw③ of the opener. Adjust the opener
manually to allow 0.5~0.7 mm of clearance between the hook
stopper④ and the groove of the needle plate⑤, and tighten the
fixing screw③ of the opener.

[ Fig. 45 ]

⑤

④

②

①

③

0.5~0.7mm

A. Timing adjustment of needle and hook

Set the stitch length to a minimum for 1060 BL and to 6 mm for 1062 BL, and then disassemble the needle plate. After pushing back
the machine, loosen the fixing screw① of the lower shaft collar and place the needle to ascend 2 mm off of the lowest position. Adjust
the hook tip to come to the center of the needle and firmly fasten the fixing screw①.
※ At this time, the clearance between the hook tip and the needle eye is 1.4 mm.

B. Clearance adjustment between needle and hook

Unfasten the fixing screw ① and ② of the hook base and control the position of the hook base by turning the adjusting collar③ of the
hook base to the left and right. Set the clearance between the hook tip and needle at around 0.02~0.1 mm and tighten the fixing screw
① and ② of the hook base.

[ Fig. 42 ] [ Fig. 43 ]

[ Fig. 44 ]

①

②

①

③

0.02~0.1mm

2mm

28

13) Position adjustment of hook needle guard

After moving the needle bar to the lowest position, check if the needle① touches the needle guard② by about 0.1~0.2 mm. For
adjustment, turn the fixing screw③ of the needle guard in a clockwise direction to push the needle guard② away from the needle, and
turn it counterclockwise to pull the needle guard② closer to the needle.

14) Height adjustment of the auxiliary presser foot

Normally the auxiliary presser foot② lifts 9 mm off the needle plate when the pressure bar lifter① is raised.

A. Raise the pressure bar lifter①, unfasten the pressure-adjusting screw③ and bring up the auxiliary presser foot② 9 mm off the surface

of the needle plate.

B. Loosen the fixing screw⑥ of the pin⑤ attached onto the pressure bar lifter bracket④.
C. Move the pin⑤ close to the bracket④ towards the arrow direction and fasten the fixing screw⑥ securely afterwards.

[ Fig. 46 ]

[ Fig. 47 ]

③

⑥

④

⑤

①

By 0.1~0.2 mm

②

󳥤

󳥣

9㎜

①

②

29

15) Timing adjustment of the main·auxiliary presser foot and needle

A. Adjustment of maximum ascending amount of the

main·auxiliary presser foot

The maximum lifting quantity of the main and auxiliary presser
foot is 7 mm. First, set the upper lid dial at “1”and take out
the upper lid. Move the body① of a climb device towards the
arrow direction until it reaches the stopper plate②. At this
time, set the clearance between the outer round of the pin④
head, which is inserted into crank③ and outer round of the
screw⑤ at 45.5 mm. Tighten the crank clamp screw⑥. After
adjustment, reassemble the upper lid with the dial set at “1”.

B. Adjustment of lifting amount of the main·auxiliary

presser foot

The height of lifting amount of the main·auxiliary presser
foot must be equal. Make the adjustment as indicated below.

a) Set the stitch length at a maximum.
b) Take out the rubber cap from the upper lid.
c) Loosen the clamp screw① and turn the machine until the

needle tip and the upper part of the feed dog come to meet
on the surface of the needle plate.

d) Adjust the crank② to make sure that the main and

auxiliary presser foot touch the needle plate at the same
time and fasten the clamp screw①.

e) After adjustment, place back the rubber cap on the upper lid.

C. Timing adjustment of the main·auxiliary presser foot and needle

As a standard, the needle tip enters the needle hole of the feed dog immediately after the main presser foot① touches the feed dog.
Likewise, the main presser foot① comes apart from the feed dog right after the needle tip comes out of the feed dog. Refer to the
following for adjustments.

a) Disassemble the upper lid with the dial set at “1”.
b) Loosen two fixing screws of vertical movement cam② of the presser foot.
c) After securing the needle bar in the highest position, hold the No.1 screw③ of the cam② so that it faces up perpendicularly.

Afterwards, tighten the cam-fixing screws.

d) Place back the upper lid after adjustment.

[ Fig. 48 ]

[ Fig. 49 ]

[ Fig. 50 ]

󳥢󳥡

45.5mm

①
②

③

⑤

⑥

④

③

②

①

①

②

30

16) Adjustment of the thread trimming device

A. Adjustment of the trimmer driving part

a) Fixing the position of the trimmer solenoid (ass´y)

ⓐ After assembling the solenoid bracket② in the trimmer base①, tighten the solenoid③ using a clamp screw④.
ⓑ When the whole body of the trimmer base (in unit) is assembled - with the solenoid shaft assembled onto the clutch lever⑤ in a

position where the trimmer shaft and trimmer shaft collar return to after having completed the trimming action, the solenoid
stroke must be assembled at 8.5 mm.

ⓒ When the assembling is finished, check if the solenoid shaft returns quickly and smoothly to the original position when released

from the arrow direction. If not, readjust the solenoid shaft by unfastening the clamp screw④.

[ Fig. 51 ]

③

④

②

①

⑤

󱐑

b) Fixing the position of the trimming cam

ⓐ Turn the pulley manually to place the take-up lever① about 1~2 mm off of the lowest position.
ⓑ Adjust the position of the cam to allow the trimmer cam roller to smoothly enter the cam②. (Bring the stopper collar ③ to the

right side of the cam②).

ⓒ Tighten firmly three fixing screws④ of the trimmer cam. Turn the pulley manually to check if the machine runs smoothly.

[ Fig. 52 ]

①

④
②
③

31

B. Adjustment of linking device for movable knife shaft in the trimmer driving part

a) After adjusting the trimmer driving part as described above, the trimmer shake linkage (ass´y)① must be returned to the original

location after finishing the trimming movement.

b) First, loosen the fixing screw③ of the movable knife shaft crank② and hold the crank down to a perpendicular direction. To

maintain this position, adjust the length of linking bar④ of the ball joint assembled onto the trimmer shake linkage (ass´y) and
firmly fasten the crank-fixing screw. (For model 1062BL, unfasten the clamp screw⑦ together)

(To change the length of the linking bar of the ball joint, loosen the left nut⑤ and the right nut⑥, and then turn the linking bar. A nut
(left) is a left screw and a nut (right) is a right screw)

c) Adjustment of the trimming stopper

ⓐ After trimming is finished for the trimmer cam leading, roller① must enter the range of the complementary straight line by

rotating the pulley to place the trimming cam in the right position.

ⓑ While pressing down the trimmer shake linkage② to move the roller① to completely come inside the trimmer cam③,

- The right equal point of the roller should adhere smoothly to the right inside of the cam’s complementary straight line and the

left tip of the trimmer shake linkage should as well come inside the trimmer stopper ④ smoothly. Adjust the trimmer stopper④
to the left and right and fasten the holder clamp screws tightly.

- After adjustment, the trimmer shake linkage② should not move when shaken to the left and right (the roller is now inside the

cam). Be sure to check if the shake linkage returns to the original position quickly and smoothly when released. If not, proceed
with horizontal adjustment of trimmer stopper④.

①

[ Fig. 53 ]

[ Fig. 54 ]

②

④

①

③

Complementary
straight line

Movement finishing
point of movable knife

Movement starting
point of movable knife

Line of trimming cam

[1060BL]

[1062BL]

③

②

①

⑥

④

⑤

③

③

②

②

①

⑤

⑦

④

⑥

32

C. Adjustment of the movable and fixed knife

a) Adjustment of the movable knife-edge and hook stopper

ⓐ When a movable knife① passes the front side of the hook stopper②, limit the clearance to be within 0.7~0.8 mm range as the

picture③ shows. The upper surface of the movable knife-edge④ should be set up 0.35~0.45mm below the lower side of hook
stopper⑤.

ⓑ Clearance adjustment of the movable knife-edge and hook stopper front side

※Loosen the needle plate and secure the hook stopper on the needle plate
※Unfasten the fixing screw⑥ of the movable knife shaft eccentric bushing⑦. Insert a thin driver or any adequate size pin into

the hole⑧ of the eccentric bushing⑦ and turn it to the left and right. The clearance will be adjusted as the position of the
movable knife shaft⑨ changes.

※After the clearance adjustment, retighten the bushing fixing screw⑥ firmly.

③

⑤

⑦

⑨

⑥

①

⑧

[ Fig. 55 ]

①

②

④

⑦

33

b) Adjustment of the movable knife and fixed blade

ⓐ The standard initial assembling position of the movable knife① is where the movable knife-edge protrudes 1.0~1.2 mm from the

edge of the fixed blade②.

ⓑ Adhesive condition of the fixed blade② and movable knife① has a large bearing on trimming functions of the machine. Refer to

the below picture for checking the surface adhesion.

ⓒ [Checking the surface adhesion of the movable and fixed blades]

Start manual trimming operation after painting marking ink on the upper part of the movable knife①. You can check the adhesion of
the movable and fixed blades by checking the ink trace left on the surface of the movable knife. If adhesion is not acceptable, turn
the pressure-adjusting screw④ of the fixed blade support③ to the left and right for pressure adjustment.

※ Caution) Forcefully turning the pressure-adjusting screw⑤ in a clockwise direction can break the fixed blade.

󳣉 (Good)

×(Bad) Turn the pressure-adjusting

screw④ of the fixed blade holder
③ in a clockwise direction for

adjustment, and double-check
adhesion status.

×(Bad) Turn the pressure-adjusting screw

④ of the fixed blade holder③ in a

counter-clockwise direction for
adjustment, and double-check the
adhesion status.

[ Fig. 56 ]

[Checking surface (facet) adhesion]

- ※Coat marking ink on the upper tip of

the movable blade.

34

c) Adjustment of the lower thread holder

The whole side of the lower thread holder① must adhere to
the lower side of the movable blade②. Also the lower
thread holder① tip should be positioned 2.5~3.0 mm
inwards off the tip of the movable blade②. For adjustment,
unfasten the fixing screw③ of the holder and retighten
afterwards.

b) Maintaining the fixed blade

Check the condition of the movable knife tip if thread
does not break easily during operation or if the thread tip
is untidy. When the blade tip is dull, use sand paper or
oil grindstone to sharpen the edges.

D. Checklist for assembly of other trimming devices

a) Checking the operation starting point of the movable

blade during trimming when the movable blade begins
to move by manual trimming operation, check whether
the take-up lever① is sitting on the lowest point or 2.5 mm
above the lowest point.

①

①

③

②

③

OIL GRINDSTONE

SAND PARER

70°

70°

[ Fig. 57 ]

[ Fig. 58 ]

[ Fig. 59 ]

①

22..55~~33..00mmmm

35

17) Adjustment of the thread tension release

The standard opening level of thread tension-adjusting disc① is 0.8~1.0 mm. Adjust the tray as described below.
A. Disassemble the upper lid with the dial set at “1”.
B. Push down the pressure bar lifter to lower the presser foot
C. Press the solenoid plate② towards the arrow direction
D. After loosening nut③, turn the cam nut④ around and check if the tray① opens to a width of 0.8 ~1.0 mm. Then securely tighten the

nut③.

E. Reassemble the upper lid after adjustment.

[ Fig. 60 ]

①

④

②

④

0.8~1.0mm

③

①

36

18) Lubrication adjustment of hook

A. Checking the oil supply level of hook

After racing the sewing machine for three minutes, secure the oil flow checking paper on the right side of the hook and run the machine
at a maximum speed for ten seconds. (You may use any type of paper) As shown in the figure, check the oil tape marked on the paper.

B. Adjustment of the oil supply level

Make the adjustment when the quantity of oil supply is not adequate.
a) Take off the sliding plate (left)①.
b) Turn the machine manually until you see the adjusting screw② for the oil supply level of the hook.
c) The amount of the oil supply will decrease when the adjusting screw② is turned in a clockwise direction, and increase when turned

in a counterclockwise direction. Check the level of the oil supply after adjustment.

[ Fig. 61 ]

①

②

②

②

Excessive
Oil supply

Proper Oil

supply

Oil Tape

Insufficient

Oil supply

Caution

▶

When checking the oil level in the hook, keep your hands or oil flow
checking paper away from any moving parts including transfer tools, to
avoid injury.

37

19) Replacement of the gauge

A. Refer to the gauges shown in the SunStar Parts Manual when ordering a gauge for replacement.
B. Take out the gauge parts①~⑧ originally attached to the machine.
C. Unfasten clamp screws① and ② as illustrated in [Figure 63].

D. Loosen four fixing screws on the left and right of the hook base as shown in [Figure 64]
E. Mount the new feed dog and needle plate.
F. Insert the needle plate into the groove of the needle bar as explained in [Figure 65] and fasten the clamp screw

①.

G. Refer to the previous instruction for setting each gauge.

[ Fig. 63 ][ Fig. 62 ]

①

②

③

④

⑤

⑥

⑧

⑦

[ Fig. 65 ][ Fig. 64 ]

①

①

②

Caution

▶

Only qualified and trained technicians should change the gauge.

▶

Before replacing, always turn off the power switch and pull the power plug. If the operator
mistakenly steps on the pedal with the switch on, the machine will start automatically and can cause
injury.

※When using a clutch motor, be aware that the motor will continue to rotate for a while even after

the power is off due to inertia. Proceed to work after the motor has come to a complete stop.

▶

For gauge parts replacement, use parts specified by SunStar.

38

1) Sewing machine troubleshooting

No Symptom Checkpoints Root cause Corrective action

1

2

Needle breaks

Due to bobbin racing during trimming, lower
thread dropping from bobbin case becomes
too short to go up

Change the racing protection spring

Racing-proof spring of
bobbin case

Unable to lift lower thread due to weak take­up lever spring

Adjust the working capacity of take-up lever
spring

Take-up lever spring

Thread breaks

3

Stitch skips

5

Cause of troubles and troubleshooting

Direction and height of needle

Needle is inserted into wrong position Reinsert the needle correctly

Needle Needle is bent Change the needle

Bad timing of feed dog Adjust the timing of feed dog

Ascending level of needle bar

Bad timing of needle and hook Adjust the timing of needle and hook

Height of needle Bad timing of needle and hook Adjust the timing of needle and hook

Gap between needle and hook

Bad timing of needle and hook Adjust the timing of needle and hook

Threading method Wrong threading Thread the needle correctly

Needle Bent needle or broken needle tip Change the needle

Direction and height of needle

Needle inserted in the wrong position

Insert the needle correctly

Upper thread tension Too tight upper thread tension Reduce tension of upper thread

Lower thread tension Too loose lower thread tension Reduce tension of lower thread

Working capacity of take-up lever spring

Loose upper thread Adjust take-up lever spring

Direction and height of needle

Needle inserted into wrong position Reinsert the needle in the right direction

Needle Bent needle or broken needle tip Change the needle

Threading Thread passing at wrong position Change the needle

Ascending level of needle bar

Wrong timing of needle and hook Adjust the timing of needle and hook

Height of needle bar

Wrong timing of needle and hook Adjust the timing of needle and hook

Gap between needle and hook

Wrong timing of needle and hook Adjust the timing of needle and hook

Remaining length of upper thread is short

Adjust the thread adjusting device

39

No Condition Checking Point Cause of Trouble Troubleshooting

Insufficient crossing quantity of movable
and fixed blade

Take-up lever pulls out the upper
thread because the needle up and
down position is too high

Crossing of trimmer cam
notch mark and blade

Up-stop position of
needle

Trimming errors

6

Adjust the stroke of movable and fixed
blade

Adjust the up-stop position of
needle

7

Upper thread is
pulled out when
sewing
commences

Upper thread is
not sunk

Lower thread is
not sunk

4

5

Too tight upper thread tension Reduce tension of upper thread

Too loose lower thread tension Increase tension of lower thread

Too weak upper thread tension Increase tension of upper thread

Too strong lower thread tension Decrease tension of lower thread

Tension of fixed blade

Tension not aligned between movable and fixed blade

Adjust tension of movable and fixed blade

Edge of movable and fixed blades Abrasion in blade groove of movable and fixed blade

Replace movable and fixed blade

Direction of needle Wrong needle insertion Reinsert the needle correctly

Too strong upper thread tension Adjust tension of upper thread

Too thick a needle for thread

Check thickness of needle

40

6

Table drawing