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Precautions to be taken so as to use
1. To prevent accidents caused by electric shock, never open the motor control box cover or
touch the components inside the control box while the power switch is ON.
1. Never bring your fingers under the needle when the power switch is turned ON or the ma-
chine is in operation.
2. Never bring your fingers, hair or clothes close to the pulley and needle or place anything on
the pulley and under the needle while the machine is in operation.
3. Never operate the machine with the safety devices such as belt cover, needle bar thread take-
up cover, finger guard, eye guard cover, etc. removed.
4. Be sure to turn OFF the power and perform the work after ascertaining that the sewing ma-
chine does not run even when the starting pedal is depressed in case of checking, adjusting,
cleaning, threading or replacing the needle of the sewing machine.
5. Never operate the sewing machine with the ground wire for the power supply removed so as
to ensure safety.
6. Be sure to turn OFF the power switch in advance in case of inserting/removing the power plug.
7. In time of thunder and lightning, stop your work and disconnect the power plug from the re-
ceptacle so as to ensure safety.
8. When you move the sewing machine from a cold place directly to a warm place, dew conden-
sation may result. Turn ON the power to the machine after you have confirmed that there is no
fear of dew condensation.
9. In case of maintenance, inspection, or repair, be sure to turn OFF the power switch and con-
firm that the sewing machine and the motor have completely stopped before starting the
work. (In case of the clutch motor, it continues rotating for a while by the inertia even after
turning OFF the power switch. So, be careful.)
10. This Instruction Manual is the Instruction Manual for MF-7900/UT59. Refer to the Instruction Man-
ual for the MF-7900(D) and UT57 for the operating procedure which is not included in this manual.
11. This product is a precision instrument, and be very careful not to splash water or oil on it, or
give a shock to it by dropping.
In addition, be aware that the safety devices such as the "eye protection cover" and "finger guard" are some-
times omitted in the sketches, illustrations and figures included in the Instruction Manual for the explanation's
sake. In the practical use, never remove those safety devices.
CAUTION BEFORE OPERATION
WARNING :
To avoid malfunction and damage of the machine, confirm the following.
• Be sure to fill the oil hole with oil designated by JUKI before use.
• Clean the sewing machine thoroughly before using it for the first time.
• Remove all dust collected on the sewing machine during the transportation.
• Confirm that the voltage and phase are correct.
• Confirm that the power plug is properly connected.
• Never use the sewing machine in the state where the voltage type is different from the designated one.
• The direction of rotation of the sewing machine is clockwise as observed from the pulley side. Be careful
not to rotate it in reverse direction.
• When operating the sewing machine, turn ON the power switch after properly setting the head on the table.
• For the first month after set-up, use the machine at a reduced sewing speed of 5,000 sti/min or less.
(4,000 sti/min or less for the MF-7900/UT59)
• Operate the pulley after the sewing machine has totally stopped.
the MF-7900/UT59 more safely
CAUTION
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