Singer 251-2 - Page 6

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
5
SETTING
UP
-
--
- -
-----
___
,
---·
-_
~-
---
~:-:;......
-
K
Fig. 3.
Installation
of Machine
on
Bose
~
~
TABLE
CUT-OUT
When
shipped,
the
base
is
held
to
the
machine
by
a
single
bolt
through
the
bottom
of
the
base.
Discard
this
bolt
and
plug
the
hole
by
inserting
from
inside
the
base,
the
special
cap
screw
K,
Fig.
3,
furnished
with
the
machine.
The
base
fits
into
a
standard
table
cut-out,
as
shown
in
Fig. 3
and
rests
on
the
four
corners
without
fastening.
Rasp
the
edges
of
the
cutout,
if
necessary,
as the
base
must slide in
without
driving
and
must
be
located
so
that
the
machine
head
does
not
touch
the
table
when
it
is
placed
on
the
base.
Use
shims
on
the
corners,
if
necessary,
to
prevent
the
base
from
rocking.
The
base
should
also
be
level
in both directions
so
that
the
oil
level
will
be
accurately
indicated
by
the
marks
in
the
base.
See
that
the
plunger
L,
Fig. 3
is in
place
inside
the
base,
before
putting
the
machine
on
the
base.
E -
--
- -
----
F
··
►
G/4
---
---------
-----
-
D
H
Fig.
4.
Installation
of
Knee
Lifter
on
Machine
Base
J
The
machine
head
rests
on
the
cork
gasket
in
the
base
and
is
not
fastened.
The
machine
hinges must
not
support
the
head
except
when
it is
tilted
back.
The
knee
lifter
is
shipped
assembled
to
the
base,
except
for
the
knee
plate
and
lever
J,
Fig. 4.
After
the
base
is
in
position,
loosen
the
set
screws
D
and
E,
Fig. 4
and
slide
the
shaft
forward
to
the
position
shown
in
Fig.
4.
Attach
the
knee
lifter
lever
J.
Set
the
stop
screw
F
so
that
there
is
only
a
little
play
of
the
lifter
before
it starts to
lift
the
presser
bar,
then
hold
the
screw
and
tighten
lock
nut
G.
Set
the
rear
stop
dog
H
to
allow
the
presser
bar
to
be
just
raised
to
its
limit
but
not
enough
to
permit
further
strain
on
the
knee
lifter
parts
or
to
permit
the
action
of
the
knee
lifter
to
lift
the
machine
from
its
base.
CAUTION:-Before
starting
the
machine,
it
must
be
thoroughly
oiled,
in
accordance
with
the
instructions
on
page
6.
SPEED
The
maximum
speed
recommended
for
Machines
251-.1
and
251-2
1s
5000
revolutions
per
minute
and
for
Machine
251-3,
4300
revolutions
per
minute
ac-
cording
to
the
material
being
sewn
and
the
type
of
work
being
done.
(See
chart
on
opposite
page.)
It
is
advisable
to
operate
these
machines
at
a
more
moderate
speed the first
few
days,
after
which
they
can
be
operated
at
maximum
speed.