JUKI MO-50e User manual

2-Needle,3/4-Thread Overlock Sewing Machine
Instruction Manual
MO-50e/51e
IMPORTANT:
Read all safety regulations carefully and
understand them before using your sewing
machine.
Retain this instruction manual for future reference.

110V~240V/15W.
20. Close cover before operating machine.

Replace bulb with same type rated 15Watts.
Use foot controller 7. - Details of the machine
9. - Accessories
9. - Accessory Box
9. - Looper cover
9. - Waste collector
11. - Attaching the foot control
11. - Sewing speed
11. - Assembling the thread stand
11. - Thread cones
11. - Power/ light switch
13. - Handwheel
13. - Presser foot lifter
13. - Changing the presser foot
15. - Inserting needles
15. - To lower the upper knife
17. - Threading/ Preparation
17. - Upper looper ( )Blue
19. - Lower looper (Red)
21. - Right needle (Green)
23. - Left needle (Yellow)
23. - After threading
25. - Sewing test
25. - Check your trial run
27. - Adjusting the thread tension
29. - Stitch length
29. - Cutting width
31. - Gathering*
- 3 thread overlock
- 3 thread rolled hem
- Unpicking seams
- Changing light bulb
- Cleaging and lubricating
31. - Differential feed*
13. Using the machine
17. Threading
Contents
25. Trial sewing, thread tension
27. Adjusting the thread tension
29. Adjustments and settings
31. Differential feed*
33. Practical sewing
35. Maintenance
37. Trouble shooting guide
41. Technical data
1. Safety regulations
5. Contents
7. Details of the machine
9. Preparing the machine
4C-315A221
4C-316B22
4C-326C22
4C-316C24
4C-316C26
4C-316C28
4C-326G22
4C-326C25
4C-326C23
Foot controller (100v) Japan
Foot controller (115v) U.S.A.
Foot controller (220v) South Africa
Foot controller (220v) Argentina
Foot controller (220v) Korea
Foot controller (220v) the Middle East
Foot controller (230v) Europe
Foot controller (240v) U.K.
Foot controller (240v) Australia
2

3
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25
Looper cover
Looper cover opening indent
Knife guard
Cloth plate
Stitch plate
Presser foot
Upper looper tension dial
Lower looper tension dial
Right needle tension dial
Left needle tension dial
Thread take up cover
Thread guide plate
Accessory box
Bulb cover
Power / light switch
Handwheel
Machine socket
Thread stand
Anti-vibration cone
Spool holder pin
Retractable support rod
Open thread guide
Presser foot lifter
Stitch length dial
Differential feed dial
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1
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21
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24
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Details of the machine
Details of the machine

4
Screwdriver
Tweezers
Cleaning brush
Set of needles ELX705
Net
Spool caps
Waste collector
Hexagon wrench
Upper knife
Oiler
All standard accessories are stored
in the box. Pull out to open.
Push in to close.
To open, push to the right with your thumb
in the indent and tilt towards you.
To close push it up and the cover engages
automatically.
Fabric waste will be collected as you sew.
Push the waste collector under the front of the
machine and slightly to the left towards the cloth
plate cover.
To open push the lever up.
To close push the cover up to the
right, it snaps into position
automatically.
1
2
3
4
5
6
7
8
9
10
Preparing the machine
Accessories
Accessory Box
Looper cover
Waste collector
Cloth plate cover
12
56
9
3
4
8

Raise the support rod fully, turning slightly
until the positioning catches engage.
The anti-vibration cone should be used with the
wider edge to the bottom on the spool holder
pin when sewing with cones.
When using household spools remove the
anti-vibration cones.
Place spool on spool holder pins and push
the spool caps on.
If threads slip and get twisted, cover the spools
with the nets supplied in the accessory box.
The power switch is conveniently placed on the
handwheel side of the machine.
"I"-ON
"O"-OFF
Plug foot control into machine socket (A)
and then into main socket (B).
The sewing speed can be adjusted by
increasing or decreasing the pressure
on the foot control (C).
5
Preparing the machine
Assembling the thread stand
Thread cones
Power/light switch
Attaching the foot control
Sewing speed
ON
I
O
OFF
B
A

6
To raise the presser foot, raise the lever
on the rear of the machine until it engages.
-Switch the machine off"O".
-Raise the presser foot.
Press the catch (A) to release the presser
foot from the clamp.
Raise the presser foot lifter to the highest
position and remove the presser foot sole
to the left.
To attach the presser foot sole, place it under
the shaft. The groove in the shaft should line
up exactly with the presser foot pin.
Lower the shank and the presser foot will
engage automatically.
The handwheel turns counterclockwise.
Using the machine
Handwheel
Presser foot lifter
Changing the presser foot
A

7
- Turn the handwheel to raise the needles.
- Open the looper cover.
- Press the upper knife holder to the right.
Turn the knob clockwise until the knife
engages.
- Close the looper cover.
- Switch the machine off"O".
Disconnect machine from electricity supply.
- Turn the handwheel until needles are fully
raised.
- Lower the presser foot.
- Use the hexagon wrench to loosen the
needle setscrew. Remove needle.
- Insert the needle flat side towards the back,
as far as possible into the needle clamp.
Tighten the screw.
- The left needle is set higher than the right
needle.
- Turn the knob anti-clockwise.
The knife snaps automatically into its
lower position. Close the looper cover.
Using the machine
Inserting needles
Raising the upper knife
To lower the upper knife:

16
4
5
7
4312
8
- Place the spool on the spool
holder pin.
- Bring thread up from back to front
through guide (1).
- Pull the thread under the
guider (2) up to go around the
pre-tension (3).
- Thread guide (4,5,6).
- Thread looper eye (7).
- Disconnect machine from
electricity supply.
- Support rod with thread guide
must be fully raised.
- Open the looper cover and the
cloth plate cover.
- Turn the handwheel towards you
until needles are fully raised.
- Thread the machine in the correct
sequence.
Threading
Threading / Preparation
Upper looper (Blue)
2
3

4
5
6
C
2
1
C
A
B
B
9
- Place the spool on the
spool holder pin.
- Bring thread up from back to front
through guide (1).
- Pull the thread under the
protector (2) and pass under the
guider up to go around the
pre-tension (3).
- Thread guide (4,5,6).
Threading
Lower looper (red)
- Turn the balance wheel
toward you until the lower
looper extending out
5-10mm from the needle
plate edge.
- Pull the thread
with tweezers to pass the
lower looper hole (A).
- Draw the thread with your left
hand tightly.
- Use your finger to push the
automatic threader (B) up to the
topmost, and then thread goes
through the lower looper ( )
automatically.
2
3
5~10mm