The static grounding contact
"C",
Fig. 2 with
ground
ing contact wire, furnished with the machine, provides
for the static grounding of the machine
and
will be fas
tened
at
the
rear
side
of
the
machine
base
in
such
a
manner
that
a
contact
with
the
machinebed
is
obtained.
The
paint
should be removed from the contacting
area
of the machine bed
and
the grounding contact be fas
tened at the rest plate of the motor.
Caution:
Make
certain
that
all
instructions
for
the
lubrication of the machine are complied with before
starting the machine. This also refers to checking the
speed.
0
Figure 2
LUBRICATION
Use only "Type C" oil, sold by the Singer Sewing Ma
chine
Company,
for
the
automatic
lubrication
of
the
machine. Tnis type of oil assures a troublefree lubrica
tion
and
increases
the
life
of
the
machine.
Before starting the machine
fill
the oil reservoir in the
machine base up to the "HIGH" mark. The screw-type-
pump, mounted in the machine bed, supplies oil to the
hook and to the machine parts and the oil supplied is
protected by a screen against dirt.
The level of the oil should be checked daily
and
refill
ed when necessary. Never allow the oil level to drop
below
the
"ADD
OIL"
mark.
The oil screen should be cleaned as often as required
depending upon the operations performed.
ADJUSTMENT
OF
THE
OIL
FLOW
FOR
THE
HOOK
LUBRICATION
The regulating screw "D", Fig. 3 locked in place by
a
lock
nut
and
located
at
the
head
side
of
the
hook
shaft
gear
box, regulates the oil flow for the lubrication
of the
hook.
The
oil
flow
is
set at the
factory
for auto
matic lubrication of the hook under normal sewing con
ditions. In general, the normal adjustment can be made
as follows: Turn the regulating screw in to its closed
position
and
then loosen by approx.
2-^^^
turns. Turn the
regulating screw (to the
right)
to increase the
flow
•*"
oil to the
hook
and
turn the regulating screw out (to tl.^
left)
to decrease the flow of oil to the hook.
The oil wick "E", Fig. 4 in the oil filter screw at the
front end of the hook shaft must be replaced occasio
nally as it may have collected lint or other foreign mat
ter causing an insufficient supply of oil to the hook.
Figures 3
and
4
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