SunStar KM-1060BL 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 tray①and oil tank②from the accessory box onto oil
fan③as shown in the Figure 1, then secure the oil fan under
the table④using six nails.
2) Machine head
Nail the rubber cushion②onto hinge rubber①and four
edges, then install the head hinge③in the sewing machine
with the head inserted in the bed.
[ Fig. 1 ]
[ Fig. 2 ]
①
②
③④
③
①
③
②②
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 screw②into
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”②into 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 screws③to attach the bracket②onto the
program unit①.
B. Fasten the bracket②onto the machine body, using two
fixing screws④and 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 nuts①and②
just enough to give adequate tension to belt④. Firmly tighten
the fixing nuts①and②consecutively.
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 unit ① onto 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 knob②from pneumatic
filter①.
b. Control the pneumatic pressure at 0.49 MPa (5kgf/cm
2
)
and put the knob②back to its original position. .
Secure the thread spool stand assembly①onto the table using
washer②and nut③on the right side.
8) Knee-lifting pad (thread non-trimming type)
A. Place the socket①of the knee-lifting pad (ass´y) from the
accessory box into the knee-lifting shaft②.
B. Loosen the bolt③to 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 screw①to fill up the oil tank to the gauge
line③of 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 window②of 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)①to 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
sign①of the needle bar coincides with the tip of the needle
bar frame②. If the position is not suitable, move the
magnetic holder③built 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 button①during
forward sewing will start reverse sewing immediately. When
you stop the machine and restart it by stepping down on the
pedal with the reverse button①already 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 button①twice 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
lever①stops 2mm off of its highest position. For
adjustment, move the magnetic holder②built in a carved
N.U. sign of the pulley to the left and right.
[ Fig. 16 ]
①②
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 nut②and 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 nut④and turn the pressure-adjusting
screw③clockwise, 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 spring⑤onto 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
①②
③
④⑤
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 groove①facing 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 ②of hook ①to take out the bobbin③.
B. How to insert
IInsert thread-winded bobbin①into 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 plate②to 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 lever④to make the pulley⑤touch the V-belt
and start the machine
d) When the lower thread is winded up completely on the
bobbin, the pulley⑤will 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 screw⑥to 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 nut⑧clockwise 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.