Singer 251-2 - The Arm Shaft; Removing the Arm Shaft

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
42
THE
ARM
SHAFT
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7
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Fig.
67.
Loosening
1he
Feed
Eccentric
REMOVAL-
7.
Loosen
the
four
screws
in
the
arm
top
cover
ond
(See
Figs.
67
to
69)
remove
the
arm
top
cover.
1.
Remove
the
face
plote.
2.
Remove
the
arm
side
shield
and
wick
and
the
thread
take-up
oil
guard,
as
instructed
on
page
36.
3.
Remove
the
needle
bar,
upper
needle
bar
bush-
ing,
presser
foot
and
presser
bar,
as
instructed
on
page
33.
4.
Remove
entire
thread
take-up
lever
assembly,
as
instructed
on
page
34.
5.
Remove
the
oil-removing
wick,
as
instructed
on
pages
38
and
39.
6.
Set
the
machine
at
any
stitch
length
except the
longest or the shortest
(see
instructions
on
page
16)
to
prevent
binding
of
the
arm
shaft
during
removal
and
replacement.
8.
Remove
the
oil
lead
that
is
fastened
to
the
casting
iust
beneath
the
arm
top
cover.
9.
Remove
the
feed
timing
screw
Y, Fig.
67
and
loosen
the
set
screw
0,
Fig.
67,
in
the
feed-lifting-
eccentric-and-bevel-gear,
X3,
Fig.
67.
l
0.
Remove
the
timing
screw
Zand
loosen
set
screws
in
the
feed
eccentric
U4,
Fig.
67.
11.
Remove
arm
shaft
screw
R4,
Fig.
67
from
ma-
chine
pulley
end
of
arm
shaft.
12.
Loosen
the
two
set
screws
T4, Fig.
67
and
remove
the
machine
pulley.
13.
Turn
the
needle
bar
crank
until
it is in
the
position
shown
at
M4,
Fig.
69,
to
prevent
crank
from
dis-
turbing
the
three
wick
loops
in
holder
W4,
Fig.
69
during
removal
of
arm
shaft.