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8. CLEANING
The following cleaning operations should be carried out each day in order to maintain the performance of this machine and to ensure
a long service life. Furthermore, if the sewing machine has not been used for a long period of time, carry out the following cleaning
procedures before using it again.
Turn off the power switch before carrying out cleaning.
The motor will keep turning even after the power is switched off as a result of the motor's inertia. Wait until the motor stops
fully before starting work.
The machine may operate if the treadle is depressed by mistake, which may result in injury.
Be sure to wear protective goggles and gloves when handling the lubricating oil, so that it does not get into your eyes or
onto your skin. If care is not taken, inflammation can result.
Furthermore, do not drink the lubricating oil. Diarrhea or vomiting may result.
Keep the oil out of the reach of children.
8-1. Daily cleaning
8-2. Changing the lubricating oil (every three months)
CAUTION
Cleaning the machine
1. Open the looper cover (1) and clean away any thread scraps
and other rubbish.
2. After cleaning, close the looper cover (1).
Lubrication
Refer to "4-6. Lubrication".
Checking
1. Check that the threads are threaded correctly.
(Refer to "5-3. Threading the lower threads", and "5-4.
Threading the upper threads".)
2. If the tips of the needles are broken, replace the broken
needles.
4327B
3. Carry out a trial sewing.
The lubricating oil should be changed at least once every three
4267B
months.
1. Have an oil pan ready, and then remove the screw (1).
2. After draining the oil, install the screw (1).
* When installing the screw (1), check that the O-ring (2) is
fitted onto it.
3. Fill the machine with oil until the oil level reaches the point in
between the upper and lower reference lines on the oil gauge.
(Refer to "4-6. Lubrication".)
DA-927A, DA-928A
8. CLEANING
16
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