Putting sewing systems into operation is prohibited until it has been ascertained that the sewing systems in
which these sewing machines will be built into, have conformed with the safety regulations in your country.
Technical service for those sewing systems is also prohibited.
1. Observe the basic safety measures, including, but not limited to the following ones, whenever you use the
machine.
2. Read all the instructions, including, but not limited to this Instruction Manual before you use the machine.
In addition, keep this Instruction Manual so that you may read it at anytime when necessary.
3. Use the machine after it has been ascertained that it conforms with safety rules/standards valid in your
country.
4. All safety devices must be in position when the machine is ready for work or in operation.
The operation without the specified safety devices is not allowed.
5. This machine shall be operated by appropriately-trained operators.
6. For your personal protection, we recommend that you wear safety glasses.
7. For the following, turn off the power switch or disconnect the power plug of the machine from the
receptacle.
7-1 For threading needle(s), looper, spreader etc. and replacing bobbin.
7-2 For replacing part(s) of needle, presser foot, throat plate, looper, spreader, feed dog, needle guard, folder,
cloth guide etc.
7-3 For repair work.
7-4 When leaving the working place or when the working place is unattended.
7-5 When using clutch motors without applying brake, it has to be waited until the motor stopped totally.
8. If you should allow oil, grease, etc. used with the machine and devices to come in contact with your eyes or
skin or swallow any of such liquid by mistake, immediately wash the contacted areas and consult a medical
doctor.
9. Tampering with the live parts and devices, regardless of whether the machine is powered, is prohibited.
10. Repair, remodeling and adjustment works must only be done by appropriately trained technicians or
specially skilled personnel. Only spare parts designated by JUKI can be used for repairs.
11. General maintenance and inspection works have to be done by appropriately trained personnel.
12. Repair and maintenance works of electrical components shall be conducted by qualified electric
technicians or under the audit and guidance of specially skilled personnel.
Whenever you find a failure of any of electrical components, immediately stop the machine.
13. Before making repair and maintenance works on the machine equipped with pneumatic parts such as an air
cylinder, the air compressor has to be detached from the machine and the compressed air supply has to be
cut off. Existing residual air pressure after disconnecting the air compressor from the machine has to be
expelled. Exceptions to this are only adjustments and performance checks done by appropriately trained
technicians or specially skilled personnel.
14. Periodically clean the machine throughout the period of use.
15. Grounding the machine is always necessary for the normal operation of the machine. The machine has to
be operated in an environment that is free from strong noise sources such as high-frequency welder.
16. An appropriate power plug has to be attached to the machine by electric technicians. Power plug has to be
connected to a grounded receptacle.
17. The machine is only allowed to be used for the purpose intended. Other used are not allowed.
18. Remodel or modify the machine in accordance with the safety rules/standards while taking all the effective
safety measures. JUKI assumes no responsibility for damage caused by remodeling or modification of the
machine.
19. Warning hints are marked with the two shown symbols.
Danger of injury to operator or service staff
Items requiring special attention
vi
FOR SAFE OPERATION
1. To avoid electrical shock hazards, neither open the cover of the electrical box for the motor nor
touch the components mounted inside the electrical box.
1. To avoid personal injury, never operate the machine with any of the belt cover, finger guard or
safety devices removed.
2. To prevent possible personal injuries caused by being caught in the machine, keep your fingers,
head and clothes away from the handwheel, V belt and the motor while the machine is operation.
In addition, place nothing around them.
3. To avoid personal injury, never put your hand under the needle when you turn “ON” the power
switch or operate the machine.
4. To avoid personal injury, never put your fingers into the thread take-up cover while the machine
is in operation.
5. The hook rotates at a high speed while the machine is in operation. To prevent possible injury
to hands, be sure to keep your hands away from the vicinity of the hook during operation. In
addition, be sure to turn OFF the power to the machine when replacing the bobbin.
6. To avoid possible personal injuries, be careful not to allow your fingers in the machine when
tilting/raising the machine head.
7. To avoid possible accidents because of abrupt start of the machine, turn OFF the power to the
machine when tilting the machine head or removing the belt cover and the V belt.
8. If your machine is equipped with a servo-motor, the motor does not produce noise while the
machine is at rest. To avoid possible accidents due to abrupt start of the machine, be sure to
turn OFF the power to the machine.
9. To avoid electrical shock hazards, never operate the sewing machine with the ground wire for
the power supply removed.
10. To prevent possible accidents because of electric shock or damaged electrical component(s),
turn OFF the power switch in prior to the connection/disconnection of the power plug.
11. Be sure to confirm that the machine head support bar is properly set in place before tilting the
machine head.
BEFORE OPERATION
CAUTION :
To avoid malfunction and damage of the machine, confirm the following.
• Before you put the machine into operation for the first time after the set-up, clean it thoroughly.
• Remove all dust gathering during transportation and oil it well.
• Confirm that the power plug has been properly connected to the power supply.
• Confirm that the voltage has been properly set.
• Never use the machine in the state where the voltage type is different from the designated one.
• The direction of rotation of the sewing machine is counterclockwise as observed from the handwheel side.
Be careful not to rotate it in reverse direction.
• For the first month, run the machine at a speed of 1,800rpm or less.