JUKI J-350QVP Instruction Manual
Lockstitch machine with a long arm and a thread trimmer
J-350QVP
INSTRUCTION MANUAL
EN
Attention :
Congratulations on your purchase of a JUKI sewing machine.
Please be sure to read this Instruction Manual before operating the sewing machine
to ensure safe operation. Please be sure to keep the Instruction Manual so that you
can read it whenever necessary.
JUKI website: http://www.juki.com
"IMPORTANT SAFETY INSTRUCTIONS"
When using an electrical appliance, basic safety precautions should always be followed, including the
following: Read all instructions before using this sewing machine.
"DANGER
1. An appliance should never be left unattended when plugged in.
2. Always unplug this appliance from the electric outlet immediately after using and before cleaning.
____
"WARNING
1. Do not allow this appliance to be used as a toy. Close attention is necessary when this appliance
is used by or near children. This appliance can be used by children aged from 8 years and above
and persons with reduced physical, sensory or mental capabilities or lack of experience and
knowledge if they have been given supervision or instruction concerning use of the appliance
in a safe way and understand the hazards involved. Children shall not play with the appliance.
Cleaning and user maintenance shall not be made by children without supervision.
2. Use this appliance only for its intended use as described in this manual. Use only attachments
recommended by the manufacturer as contained in this manual.
3. Never operate this appliance if it has a damaged cord or plug, if it is not working properly, if it has
been dropped or damaged, or dropped into water. Return the appliance to the nearest authorized
dealer or service center for examination, repair, electrical or mechanical adjustment.
4. Never operate the appliance with any air openings blocked. Keep ventilation openings of the sewing machine and foot controller free from the accumulation of lint, dust and loose cloth.
5. Keep ngers away from all moving parts. Special care is required around the sewing machine
needle.
6. Always use the proper throat plate. The wrong plate can cause the needle to break.
7. Do not use bent needles.
8. Do not pull or push fabric while stitching. It may deect the needle causing it to break.
9. Switch the sewing machine off ("O") when making any adjustments in the needle area, such as
threading needle, changing needle, threading bobbin, or changing presser foot and the like.
10. Always unplug sewing machine from the electrical outlet when removing covers, lubricating, or
when making any other user servicing adjustments mentioned in the instruction manual.
11. Never drop or insert any object into any opening.
12. Do not use outdoors.
13. Do not operate where aerosol (spray) products are being used or where oxygen is being administered.
14. To disconnect, turn all controls to the off ("0") position, then remove plug from outlet.
15. Do not unplug by pulling on cord. To unplug, grasp the plug, not the cord.
16. Turn OFF the power switch before insertion/removal of any cords and any plugs.
17. Basically, the machine should be disconnected from the electricity supply when not in use.
18. If the power cord of this appliance is damaged, it must be replaced with a special cord byyour
nearest authorized dealer or service center.
To reduce the risk of electric shock:
____
To reduce the risk of burns, re, electric shock, or injury to persons:
"
"
"SAVE THESE INSTRUCTIONS"
This sewing machine is intended for household use only.
Use the stitch regulator made by the Grace Company.
Stitch regulator can be used on the following machine model-number.
Sewing machine model number Stitch regulator model number
J-350QVP Sure Stitch for JUKI J-350
In order to use your machine safely, be sure to read the Instruction Manual for the Sure Stitch for
JUKI J-350QVP provided by Grace Company for how to install the machine on the frame, how to connect the stitch regulator and how to operate the machine.
– 1 –
Congratulations on your purchase of a JUKI sewing machine.
Please be sure to read safety precautions in "To use the sewing machine safely" in the Instruction
Manual before use to fully understand the functions and operating procedures of the sewing machine so as to use the sewing machine for a long time.
After you have read the Instruction Manual, please be sure to keep it together with the warranty so
that you can read it whenever necessary.
To use the sewing machine safely
Marks and pictographs included in the Instruction Manual and shown on the sewing machine are
used so as to ensure safe operation of the sewing machine and to prevent possible risk of injury to
the user and other people.
Warning marks are used for different purposes as described below.
WARNING
ATTENTION
Pictographs mean the following:
Danger
warning which
is not specied
Prohibited
matter which is
not specied
Generally
required
behavior
WARNING
For the combination of the material and the thread and needle, in particular, refer to the explanation
table in "Replacement of the needle".
If the needle or thread does not match the material used such as in the case that an extra heavyweight material (e.g., denim) is sewn with a thin needle (#11 or higher), the needle can break resulting in an unexpected personal injury.
Indicates that there is a possible risk of death or serious injury if this
mark is ignored and the sewing machine is used in a wrong manner.
Indicates the operation, etc. which can cause a possible risk of personal
injury and/or physical damage if this mark is ignored and the sewing machine is used in a wrong manner.
There is a risk
of electrical
shock
Disassembly/
alteration is
prohibited
Disconnect the
power plug
There is a risk
of re
Do not place
ngers under
the needle
There is a
risk of injury
to hands, etc.
Do not pour
oil, etc.
Other precautions
●
● Do not put the sewing machine
under the direct
sunlight or
in ahumid
place.
Be aware that the following state can take place since the sewing machine incorporates semi-conductor electronic parts and precise electronic circuits.
● Be sure to use the sewing machine in
the temperature range
from 5ºC to 40ºC.
If the temperature is exces-
sively low, the machine can
fail to operate normally.
Do not wipe the sewing machine with solvent such as thinner.
When the sewing machine is soiled, put
a small quantity of neutral detergent on a
piece of soft cloth and carefully wipe off the
sewing machine with it.
* The operating temperature of the sewing machine
is between 5ºC and 40ºC. Do not use the sewing
machine under the direct sunlight, near the burning
things such as a stove and candle, or in a humid
place. By so doing, the temperature in the interior
portion of the sewing machine can rise or the coating of the power cord can melt, causing re or electrical shock.
– 2 –
HOW TO CARRY THE SEWING MACHINE
A
CAUTION
How to take out the sewing machine
CAUTION
If you pull up the sewing machine by holding presser regulating screw
section A, the sewing machine can break.
In addition, be aware that the presser regulating screw can break if a
physical impact is given to it.
Pull out the sewing machine from the cutout of styrene foam by holding
the main body of the arm.
Turn OFF the power switch. Always must be disconnected plug from socket-outlet.
How to hold the sewing machine
CAUTION
1. Never hold the handwheel since it rotates.
2. Always must be handle the sewing machine with two persons or
more since the sewing machine weighs 26 kg or more.
3. Do not hold the sewing machine by placing hands near the needle
bar and the presser bar to avoid the risk of injury.
Carry the sewing machine while holding the machine arm with two per-
sons as shown in the gure.
– 3 –
GROUNDING INSTRUCTIONS
This product must be grounded. In the event of malfunction or breakdown, grounding provides a path of least resistance
for electric current to reduce the risk of electric shock. This product is equipped with a cord having an equipment-grounding conductor and a grounding plug. The plug must be plugged into an appropriate outlet that is properly installed and
grounded in accordance with all local codes and ordinances.
DANGER
Improper connection of the equipment-grounding conductor can result in a risk of electric shock.
・
The conductor with insulation having an outer surface that is green with or without yellow stripes is the equipment-
・
grounding conductor. If repair or replacement of the cord or plug is necessary, do not connect the equipment-grounding
conductor to a live terminal.
Check with a qualied electrician or serviceman if the grounding instructions are not completely understood, or if in doubt
as to whether the product is properly grounded.
Do not modify the plug provided with the product. if it will not t the outlet, have a proper outlet installed by a qualied
electrician.
This product is for use on a nominal 120 V circuit, and has a grounding plug that looks like the plug illustrated in sketch
A
in Figure 1. A temporary adaptor, which looks like the adaptor illustrated in sketches B and C, may be used to connect
this plug to a 2-pole receptacle as shown in sketch B if a properly grounded outlet is not available. The temporary adaptor
should be used only until a properly grounded outlet can be installed by a qualied electrician. The green colored rigid ear,
lug, and the like, extending from the adaptor must be connected to a permanent ground such as a properly grounded outlet box cover. Whenever the adaptor is used, it must be held in place by the metal screw.
Figure 1
Grounding
pin
(C)
Adapter
Grounding
means
(A)
Metal
screw
Cover of
grounded
outlet box
(B)
Grounding
pin
(D)
– 4 –
CONTENTS
IMPORTANT SAFETY INSTRUCTIONS ...................................................1-2
HOW TO CARRY THE SEWING MACHINE ...............................................3
GROUNDING INSTRUCTIONS ...................................................................4
Specications ...............................................................................................6
Accessories ..................................................................................................6
Principal Parts ..............................................................................................7
Name and Function of each component..................................................8-12
Winding the bobbin ................................................................................13-16
Attaching the needle ................................................................................... 16
Threading the machine ............................................................................... 17
Adjusting the thread tension ..................................................................18-19
Presser foot lifting lever .............................................................................. 19
Setup and operation ..............................................................................20-27
Maintenance ............................................................................................... 28
Maintenance and lubrication..................................................................28-29
Troubles and Corrective Measures ............................................................30
– 5 –
Specications
Description Specication
Sewing speed Max. 2,200 sti/min
Needle bar stroke 35 mm
Lift of presser foot 4.5 mm
Needle GB 134R
Lubricating oil New Defrix Oil No.1
Dimensions of sewing machine 22.2W x 46.0H x 73.0L (cm)
Weight of sewing machine 26 kg
Rated power supply / Power consumption AC100V-AC240V/1.2A-0.8A, 50/60Hz
Accessories
1
2
5
6
7
3
4
8
9
1. Power cord
2. Exclusive screwdriver
3. Screwdriver (medium)
4. Cleaning brush
5. Bobbins (4pcs.)
6. Oilcan
7. Needles (GB 134R #18)
8. Spool cap
9. Thread stand components
(Spool holder disk, thread stand thread guide, bobbin winderspool
holder disk, bobbin winder seat, bobbin winder side anchors(two
pieces), setscrew (large), setscrews (small) (two pieces))
10. Eye protection cover components
(Safety plate, safety plate mounting plate, washers (two
pieces),setscrews (large) (two pieces), setscrews (small) (two
pieces))
11. Thread guide pin
12. Blind seal (Spare)
10
11 12
– 6 –
Principal Parts
1
2
15
3
17
4
5
16
22
18
7
8
9
10
11
6
12
13
20
19
21
14
1. Thread trimmer retaining plate
2. Thread guide base
3. Presser foot pressure regulator
4. Thread tension dial
5. Lamp (built-in type)
6. Hand pulley
7. Bobbin winder
8. Spool holder disk
9. Bobbin winder side anchor
10. Bobbin presser
11. Bobbin winding shaft
12. Power switch
13. Inlet of electric power cord
14. Presser foot lifting lever
15. Thread guide pin
16. Eye protection cover
17. Tension controller No. 1
18. Hand wheel
19. Presser regulator cover
20. Stitch regulator connection connector
21. Panel junction cable connection connector
22. Hook cover
23. Connecting plate (large)
24. Connecting plate (small)
24
23
1. Screw in the presser foot
2. Presser foot
7
3. Throat plate
4. Needle clamp
4
5. Needle bar thread hook
6. Needle
1
2
5
7. Needle bar thread guide
6
3
– 7 –
Name and Function of each component
Power cord
Insert the electric power cord plug into the corresponding inlet.
CAUTION
Turn OFF the power switch before insertion/removal of any cords
and any plugs.
Perform these following steps before you are not using your sewing
machine.
1. Turn OFF the power switch.
2. Remove the power plug from the wall outlet.
Power switch
Turn ON the machine, set the power switch to ”I”.
Turn OFF the machine, set the power switch to ”O”.
ON
OFF
– 8 –
❻
❺
❹
❸
❷
❶
Installing the thread stand
CAUTION
Turn OFF the power switch.
Always must be disconnected plug from socket-outlet.
1. Insert bobbin winder spool holder disk ❷ into spool holder ❶. Fix
the former with setscrew ❸.
2. Set bobbin winder seat ❹ and two anti-vibration cones ❺ on
spool holder ❶.
3. Set thread stand thread guide ❻ on the top of bobbin winder
spool holder disk ❷.
4. Install thread stand ❼ on frame ❾ with two setscrews ❽.
❼
❽
❶
❾
Installing the thread guide
CAUTION
Turn OFF the power switch.
Always must be disconnected plug from socket-outlet.
❷
Insert thread guide pin ❶ into the frame with the holes in the pin faced
to tension controller No. 1 ❷. Pat the top of the thread guide pin with
the handle of screwdriver to prevent the pin from slipping off easily.
– 9 –
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