Ill.
HOW TO OPERATE THE MACHINE
1.
LUBRICATION
The
amount
of
oil
to
lubricate
the
face
plate mechanism has normally been ad-
justed at
our
factory before shipment.
If
necessary, you may adjust it
by
turning
the
adjusting screw shown in
the
Fig.3.
The stable
amount
of
oil
is
constantly
supplied
to
. the face plate mechanism
from
the
thread take-up lever shaft
through
the
oil wicks.
Check the following points:
Fig.
3
(I)
2 oil wicks
(3c/>)
must be passed through
the
thread take-up lever shaft.
(2)
The
oil adjusting screw (Fig.3) located under the machine bed should have been
screwed in
by
3 or 4 turns.
(3)
The
tips
of
oil wicks sheathed with aluminium pipe are very slightly touching the
surfaces
of
the needle crank rod and
the
needle bar.
(4)
To
check the amount
of
oil:
Hold a piece of rough paper facing
to
the mechanism
as
shown
in
Fig.4 so
as
to
blot
it
with
splashed
oiL
Run the machine for 5 seconds and then stop it for 5
seconds, repeat this intermittent test for 2 minutes and judge the amount of oil
from the blot on
the
paper under
the
bright sunlight or artificial light. Fig.5 shows
the optimum distribution
of
oil spots on the test paper.
(5) The lubricating oil must come up in the oil gauge within 3 seconds after
the
machine has been started
to
run.
• •
Fig.
4
Fig.
5
-5-
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