Luby JG-1803 User manual

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our sewing machine.
• Please read this user manual carefully to use the machine correctly.
• Before using the machine, please read "instructions for safe use" .
• Keep this manual in a safe place for reference.
Sewing Machine Manual
JG-1803
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Contents
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Adjusting the Stitch (Thread Tension)
................................................
Troubleshooting
.................................................................
Specifications
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1
Contents
1
Cleaning Instructions
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Thank you for purchasing the JG-1803 sewing machine .
Light and compact ,the JG-1803 can be used in your kitchen , Living room , or anywhere else
that is convenient .
It’s simple and easy-to -use, even for beginners .
Read the user manual (this book )carefully before using the machine to make sure you know how
to use it correctly .
Names of parts and accessories
Preparations for Sewing
...................................................
When using the AC adapter
When using the foot pedal
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Sewing Basics
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Various type of sewing
...........................................................
• Changing the stitch while sewing
........................................................
• Sewing tubular items
..................................................................
•buttonholes sewing
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Replacing the Needle and Thread
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• Threading the upper thread ...........................................................
• Threading bobbin thread ..............................................................
• Winding on the bobbin
...................................................................
• Replacing the needle .................................................................
•
•
•Installing the battery
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15
16
2
4
4
4
4
5
7
7
7
8
10
10
11
12
13
14
16
Sewing tips:
Turning the handwheel to make sewing more
smoothly.
1.Turn the handwheel one round before each
2.After changing the stitches,turn the
3.After sewing,turn the handwheel one
sewing starts.
handwheel one round.
round,and lift the needle,then take the
fabric out.

This section provides the names of JG-1803 parts and accessories.
After purchasing the product, make sure you have all parts.
Names of parts and accessories
Foot pedal/Automatic switch
Needle clamp screw
Bobbin case li d
release button
2
Thread cutter
Thread guide
Presser foot
lock lever
Presser foot
Feed dog Bobbin case lid
Afabric test piece is set
in the machine at time of
shipment from the factory.
Remove this piece before
using the machine for better sewing sleeves .
Upper thread
tension dial
Pattern selection dial
Tension disk Upper thread
Take-up lever Stop poling
Light
Hand wheel
Presser foot lifter
Reverse lever
Slidetubularitems
like sleeves andtrouser legsover
the arm so you can sew them.
Upper thread spindle
Thread cap
Under thread winding shaft

Accessories (included)
Names of parts and accessories
3
AC adaptor socket
Under thread winding shaft
Take-up lever
Tension disk
Upper thread
Presser foot lifter
Foot pedal socket
Bobbin
Stop poling
Foot pedal x 1
Buttonhole
presser foot × 1 Threader × 1
Needle× 3
Spool × 2 Bobbin x 2 Adaptor x 1

Insert the foot pedal plug in the foot pedal socket on the
sewing machine body.
The foot pedal allows you to operate the machine with your foot.
When using the AC adaptor
Preparations for sewing
You can also power the machine using the AC adaptor
Insert the AC adaptor plug in the socket on the sewing
machine body .
Be sure to use only the specified AC adaptor
in order to avoid injury.
When using the sewing machine
with the foot pedal
Caution
First, install the battery or the AC adapter
Installing the batteries
Tilt the sewing machine on its side and remove the cover
of the battery compartment on the bottom .
Sewing thread has been installed at the factory so be careful
not to dislodge it .
Insert four AA alkaline batteries (LR6) are correct
when you install the batteries . Only use new batteries
Make sure
the batteries
are correctly
oriented .
Then close the cover
4
You can use your machine cordlessly by installing batteries
Turn the Foot pedal/Automatic switch to the “ ” position .

6Lower the presser foot lifter to fasten the fabric.
5Turn the hand wheel toward you
the position where you wish to start sewing.
1Make sure the upper thread and the bobbin
thread have been correctly installed.
See page 14 to 15 for instructions about threading
the upper thread and the bobbin thread.
3Turn the pattern selection dial to select the
stitch pattern.
Here," " Set the machine for "straight stitch."
4Raise the presser foot and place the fabric
under it.
When you use the sewing machine for the first
time, remove the test piece (this is a piece of
fabric used for test sewing when the machine is
shipped from the factory).
Let's try making a straight stitch, the most basic
kind of sewing.
2Turn the hand wheel toward you
to raise the take-up lever
to their highest position.
Pull the upper thread and the bobbin thread together
so they come out behind the needle by about 10 cm.
Make sure that the upper thread and the bobbin
thread come out beneath the pressure foot.
When rotating the Pattern selection dial , make sure
the needle is in the raised position.
Sewing basics
(counterclockwise) to lower the needle to
(counterclockwise)
and the needle
5
Make sure that the the Foot pedal/Automatic switch
is set to and the adaptor is plugged in.
7

9When you have finished sewing, rotate the hand
wheel toward you (counterclockwise) to raise
the needle and the take-up lever, and
the presser foot lifter.
10 Remove the fabric and cut the thread with the
thread cutter.
●When reverse stitching
The machine will sew in
reverse only while the reverse lever
is pushed down.
8Start sewing again while pressing the fabric
gently.
How to use the operating Foot
pedal/Automatic switch
When using the foot pedal(one speed foot pedal)
2
Lower the needle by turning the hand wheel
toward you (counterclockwise) to insert
the needle into the cloth.
3
Raise the presser foot lifter to raise the
presser foot.
4
Rotate the fabric.
5
Lower the presser foot lifter to begin
sewing again.
●When changing sewing direction
If the thread is caught and you cannot remove
the fabric, rotate the hand wheel back and forth
slightly to make it easier to remove the thread
and the fabric.
Hints
Note
4
3
Sewing basics
Reverse lever
raise
6
1
: Stop the sewing machine.
: Stop the sewing machine /Foot
pedal switch.
Make sure Foot pedal/Automatic switch is “ ”
position. The machine will run only while you are
pressing the pedal with your foot.
: The machine will automatically run slowly.
: The machine will automatically run quickly.

You can choose from 12 different stitches by turning the pattern selection dial.
If you want to change the stitch while sewing
When sewing tubular items
Slide tubular items like sleeves and trouser legs over the arm so you
can sew them.
Mark Type
Straight stitch Blind stitch Buttonhole sewing Zigzag stitch
Presser
(Normal presser foot)
(Presser foot for
buttonhole sewing)(Normal presser foot)
Uses
Hemming
Sewing cuffs, etc.
Sew around the
buttonhole.
(See page 8-9 )
fabric (overcast stitching)
·Applique
·Patchwork, etc.
Fine
stitches
Coarse
stitches
2
Stitches can be used when sewing two layers of
fabric too.
The straight stitch is best when you are sewing
soft fabrics or silks.
Hints
Turn the pattern selection dial to align with the mark
indicating the desired stitch.
Hints
It is helpful to remove
the auxiliary table when
you sew tubular items like
sleeves.
Caution
Do not turn the pattern selector dial while the machine is
running or while the needle is in the fabric. Doing so can
result in the machine damage.
1Stop the machine, rotate the hand wheel toward you
(counterclockwise), and move the take-up
lever and the needle to their highest position.
Pattern selection dial Mark
Finishing the edge of the
Various types of sewing
foot
7

Buttonhole sewing
You can sew buttonholes by using the buttonhole presser foot accessory.
We recommend that sew a few pieces before you sew actual material.
Install the buttonhole presser foot
5
1Raise the presser foot and lift the needle
to its highest position.
2Raise the presser foot lifter and remove the
presser foot.
3Hold the buttonhole presser foot and place it
under the holder.
Align the presser foot pin so it lines up right
under the holder.
4Lower the presser foot to lower the presser
foot holder.
Raise the presser foot lock lever to secure the
presser foot to the presser holder.
Presser foot holder
6Raise the presser foot lifter, pass the upper
thread and the bobbin thread through the
buttonhole presser foot so they come out from
the side.
Click!
Buttonhole presser foot
Presser foot lock
lever
Pin
Start mark
Top mark
Various types of sewing
8
Buttonhole
presser foot

Various types of sewing
Sewing buttonhole
11
2 the fabric beneath the presser foot.
the left .
removable . Move the slider frame toward
3
4
5
6
7
9
8
requirement by stopping slider frame movement.
needle is in its high position.
Select Pattern selection dial to “ ” to sew right side
bar tack.
Select Pattern selection dial to “ ” to sew back
bar tack for 4 or 5 stitches.
Select Pattern selection dial to “ ” to sew front bar
tack for 4 or 5 stitches.
: end of sewing
Pattern
selector
dial
2 4
Your sewing will be neater if
you guide the fabric as it passes
through the machine.
Hints
Caution
Stop the sewing machine and raise the needle and the thread
tension lever to their highest positions when you rotate the pattern
selection dial. Turning the dial while the machine is running
can damage the machine.
When you have finished sewing, pull the fabric slighty
and cut the thread .
To keep the thread from unraveling, pull out the
upper thread from the rear of the fabric and tie
it off with the bobbin thread.
then follow the
steps below in
order indicated
while changing
the stitch
selection dial.
Buttonhole length
( Button diameter +
button thickness)
10
11
you so that the top mark on the slider meets
the start mark.
Using tailor’s chalk, mark the position
of the buttonhole on the fabric.
Attach the buttonhole presser foot and place
Slider frame of buttonhole is
Draw both of needle and bobbin thread to
Choose the buttonhole length as per your
Please see the following picture.
Lower presser foot lifter and make sure the
Select Pattern selection dial to “ ” to sew left side
bar tack until the needle reaches the stitches sew
in step 6.
9

Threading the upper thread
6Rotate the hand wheel to raise the
needle to its highest position
and pass the thread through
the eye of the needle from
the front to the back .
Use of the needle threader
1
Pass the tip of the needle threader
through the eye of the needle from the
rear of the machine to the front.
2
Pass the thread through the ring.
3
Gently pull on the needle threader to
pass the thread through the eye of the
needle from the front toward the rear.
1
2
3
Replace the thread as follows when you run out of thread
or if you want to change thread color.
4Hang into the take-up lever from
right to left When the
is in its highest position .
5
21
4
3
5
6
Remove the thread
cap, place a spool
of sewing machine
thread on the spindle,
and place the
thread cap.
Place the thread
through the thread
tension disk and
pass the thread
through the groove
2
1
.
Replacing the needle and thread
Take-up lever
Lift the upper
thread spindle
as photo
take-up lever
Hang the thread into the thread
into the thread guide from left
to right.
10
Pass the thread through
the upper thread guides.
the groove
3
Through
Upper thread
guides
Caution
Make sure the switch is turned “ “ "threading
the machine.

7Attach the hook cover plate.
Thread the bobbin thread
Thread the upper thread before threading the bobbin thread.You will not be able to bring up the bobbin
thread unless you have already threaded the upper thread.
1
2
3
4
5
6
Rotate the hand wheel toward you
(counterclockwise) to raise the needle to its
highest position.
Lift the presser foot lifter.
Push the hook cover plate release button
Pull out about 10 cm of thread from the bobbin
and insert the bobbin so it winds to the right.
Hold the end of the upper thread and rotate the
hand wheel toward you (counterclockwise) while
pulling on the upper thread until the bobbin
thread emerges from the bobbin thread hole.
Pull the bobbin thread when it emerges from
the bobbin thread hole.It's easier to pull the
thread out if you use a rod with a small tip.
Pass the upper and bobbin threads to the rear
under the presser foot, pulling them out together
about 10 cm.
See the instructions on the next page for winding thread onto an empty bobbin.
Note
The upper and bobbin thread must be correctly
installed. Sew a test piece to make sure the machine
is sewing correctly and then begin sewing your project.
Be sure to use metal bobbins.
Caution
Upper
thread
Bobbin
thread
gently
Replacing the needle and thread
to remove it.
11

Winding thread onto the bobbin
Slide the bobbin winding spindle to the right.
6Stop the machine after you have wound the
appropriate length of thread onto the bobbin.
This is how you wind thread onto an empty bobbin (Make sure the needle thread is not be threaded ).
7Slide the bobbin winding spindle back to the
left and remove the bobbin from the spindle.
Be sure to use metal bobbins.
Caution
3
4
1Place a spool of sewing machine thread onto
the thread spindle and place the thread cap,
*Be careful because the
needle will move up and
down.
2As shown in the drawing, the thread passes
through the bobbin hole, and is winded 3-4
times to the right around the bobbin.
Align the groove in the center of the bobbin
with the fitting on the bobbin thread winding
spindle and press down.
Cut the thread
short.
Replacing the needle and thread
or place the thread spool on the desk( If the
thread spool is big .)
12
8 Cut the bobbin thread
Move the switch to or to start winding
the bobbin
5

Replacing the needle
1Rotate the hand wheel toward you
and raise the needle to
drawing.
2While holding the used needle, use a
coin to loosen the needle clamp screw
counterclockwise to remove the needle.
*Remove the needle and dispose of it
appropriately.
3Insert a new needle in the needle clamp so
that the flat part faces the back, turn the needle
clamp screw clockwise, and tighten the needle
in place.
Make sure to push the needle all the way
needle may break.
4Slowly rotate the hand wheel towards you to make
sure that the needle is functioning properly.
Use the following method to replace the needle if the needle becomes bent or broken.
Note
When installing or removing the needle, rotate the
hand wheel to adjust the needle to a convenient height.
If not, the
approximately the
(counterclockwise)
(counterclockwise)
(clockwise)
bobbin/
Replacing the needle and thread
into the clamp and you fully insert the
needle.
position indicated in the
Coin
Coin
13
Caution
To prevent accidents when replacing the needle, be sure to turn the Foot pedal/Automatic switch" ". (It is even
safer to remove and the AC adaptor.)

Try a few test stitches before you start sewing to check on the condition of the thread.
Since thread tension will vary depending on the type of fabric used, do some test sewing when
fabrics to check on the condition of the thread.
In normal stitches,
the upper thread in the bobbin
thread will cross in the fabric.
The upper thread should appear straight
Slowly toggle the upper thread tension
dial upwards to adjust the thread
tension until the stitches return to
normal.
The upper thread is too tight.
The thread tension increases as the mark
pattern becomes bigger.
Caution Use either the bobbin that is provided as an accessory or an off-the-shelf metal bobbin.
Thread tension cannot be adjusted if you use a plastic bobbin.
The bobbin thread should appear straight
The upper thread is too loose
you change
Slowly toggle the upper thread tension dial
downwards to adjust the thread tension
until the stitches return to normal.
The thread tension reduces as the mark
pattern becomes smaller.
Stitch adjustment (thread tension)
14

SolutionCause
AC adaptor are not installed
correctly.
Make sure the AC adaptor are
oriented correctly and reinstall
them. See page 4.
AC adaptor are dead.
No power supply.
Install new the AC adaptor
Turn the power supply switch
ON and supply power.
Thread keeps
breaking.
Knots and
tangles in the thread.
Upper thread or bobbin thread
threaded incorrectly.
Needle is bent.
Needle
incorrectly installed.
Too much thread tension.
Use scissors to cut out
thread knots and tangles.
For upper thread, see page 10.
For bobbin thread , see page 11
to thread the machine correctly.
Remove the old needle, Install
the new needle. See page 13.
Install needle correctly.
See page 13.
Turn the upper thread
adjustment dial for 3-5 degrees
and loosen thread tension.
See page 14.
Bobbin thread does not
come out from the bobbin.
Out of bobbin thread.
Incorrect threading.
Wind thread onto the bobbin
or install a loaded bobbin.
See page 11 to 12 for reference.
Thread the needle correctly
(from the front).
Stitches not regular.
Upper thread
not threaded correctly.
Correctly thread the upper
thread. See page 10 .
Needle is bent.
Dust buildup
in the bobbin case.Clean the bobbin case.
Remove the old needle,
Install a new needle.
See page 13.
Problems
When you think the machine may be malfunctioning due to problems while you are using it,check the following:
Lamp does not illuminate.
Machine runs slowly.
Machine does not run.
Troubleshooting
15

Stitches are loose or
uneven.
Upper thread does not feed
properly from the thread spool.
The upper thread is too loose.
Reinstall the spool and make
sure the spool turns smoothly.
See page 10 .
Threat gets tangled and
does not work.
Thread gets tangled inside.
Turn off the power and slowly
turn the pulley toward you to
pull out the tangled thread.
Stitch (thread tension)
out of adjustment.Using a non-metallic bobbin.Use a metal bobbin.
Needle gets stuck
in thick fabric.
Needle does not penetrate
smoothly.
Set the operating switch
to STOP, turn the pulley
toward you, try making 2-3
stitches, and then move the
operating switch.
Needle breaks.
The needle is bent
or deformed.
Needle
incorrectly installed.
Needle clamp screw is
loose.
Remove the old needle,
Install a new needle.
See page 13 .
Install needle correctly.
See page 13 .
Firmly tighten the needle
clamp screw. See page 13 .
Problems Cause Solution
Needle hit needle
plate or foot presser The needle is bent or deformed Install a new needle
Troubleshooting
16
Power supply
4 AA alkaline batteries (LR6) or DC 6V 1.2A
Weight About 2.3 kg
Size (LxWxH)33 x14 x 25 (cm)
Specifications