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9. Maintenance and inspection
9. Maintenance and inspection
Turn off the power switch before starting any cleaning work, otherwise the machine may operate if the
foot switch is depressed by mistake, which could result in injury.
Be sure to wear protective goggles and gloves when handling the lubricating oil and grease, so that
they do not get into your eyes or onto your skin, otherwise inflammation can result.
Furthermore, do not drink the oil or eat the grease under any circumstances, as they can cause
vomiting and diarrhoea. Keep the oil out of the reach of children.
9-1. Cleaning the rotary hook
1. Pull the large shuttle hook cover
toward you to open it, and
thenremove the bobbin case.
9-2. Cleaning the control box air inlet port
34
CAUTION
q
2. Open the large shuttle hook set
claw q in the direction indicated
by the arrow, and then remove the
large shuttle hook w and the inner
rotary hook e.
Use a vacuum cleaner to clean the filter in the air inlet
port w of the control box q at least once a month.
* If the machine is used while the air inlet port is blocked,
w
the inside of the control box will overheat.
When this happens, the overheating error code [E-d0]
q
will be displayed and you will not be able to operate the
sewing machine.
LK3-B448E MARK
/BA-16
2
w
e
r
3. Clean all the dust and thread ends
from around the driver r, the top
of the rotary hook thread guide and
the shuttle race.
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