8.
Maintenance
and
inspection
8. Maintenance and inspection
A CAUTION
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.
8-1. Cleaning the rotary hook
1.
Pull
the shuttle hook cover forward
2.
Open the large shuttle hook set
to open,
and
then remove the bob- claw 0
in
the direction indicated
bin case. by the
arrow,
and then remove the
large shuttle hook 8 and the in-
ner rotary hook
e.
8-2. Lubrication
NOTE
3.
Clean all the dust and t h r e a d
ends from around the driver
0,
the top of the rotary hook thread
guide and the shuttle race.
• Fill the machine with oil when the oil level
is
down to about one-third full
in
the oil sight glass.
• If oil is not added and the oil drops below this level, there is the danger that the machine may seize during
operation.
• Be sure to let the machine operate for a while after adding the oil.
• Use only specified Brother oil (Nisseki Sewing Lube 1
0)
for the machine oil.
BAS-341E
BAS-342E
1.
Fill the arm-side oil tank with oil.
2.
Fill the bed-side oil tank with oil.
BAS-341 E • 342E
29
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