Singer 246K61 Troubleshooting guide

SINGER
246K44 AND 246K61

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
I
'\-orm
K6431
(264)
SERVICE
MANUAL
AND
PARTS
LIST
FOR
SINGER*
BLIND
STITCH
HEMMERS
246k44
and
246k61
Machine
246K44
CAUTION-See
that
machine
reservoir
is filled
with
oil,
as
instructed
on
Page
6,
before
using
machine.
Copyright
Under
International
Copyright
Union
THE
SINGER
COMPANY
*A
Trademark
of
THE
SINGER
COMPANY
Printed
in
Great
Britain

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
..
APRIL,
1964.
Form K6431
(Service
~-hr,ual
and
Parts
List
for
246K/44
and
246IC61
Yiachims
)
Alterations.
Authority
PECN
K4064.
Page
34
and
Numerical:-
16495l.(728)
164955
Alter
to
164954-003
No.
Cancelled,
order
81441-003
Page
/42
and
lJumerico.1:-
164964
Page
34:-
81441-003
Page
/42.:-
164954-010
81441-010
Page
48~-
Part
l'To.
81441-003
81441-010
Pag2
51:-
16/4.954-010
:fo.
Gancelled,
order
81441-010
Additi"..'nS
Machine
Frame,
complete.
Nos.
624,
1143,
140396(805),
16l.077,
16!.,207, two
187(805),
throe
140395(805)
2.nd
four
447
fv1achin2
Frame
Lachir.e
Frame
complefa,
:ros.
624,
1143,
140396(805),
164077,
164207,
t,,.ro
187(805)
three
140395(805)
and
four
447.
Pag-e
No.
/42

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
..
CONTENTS
Page
Page
DESCRIPTION
........................................
3,
4
PARTS
COMPLETE
FOR
246K44
MACHINE
...
31
SETTING
UP
.............................................
5
PARTS
SPECIAL
TO
246K61
MACHINE
.......
41
LUBRICATION
........................................
6
FITTINGS
................................................
44
INFORMATION
FOR
OPERATOR
............
6-13
ACCESSORIES
..........................................
45
ADJUSTMENTS
....................................
14-26
NUMERICAL
LIST
OF
PARTS
...................
48
PARTS
LIST
...........................................
27
INDEX
Page
Accessories
to
Machines
.. 3
Angular
Adjustment
of
Stationary
Knife . .
..
25
Bight
Adjustment
15,
24,
25
Blind Stitch
Hemming
Attachments
.
14,
15
Cleaning
..
6,
12
Clearance
between
Spreader
Carrier
Connection
and
Guide
Bar
Bracket
20
Contact
Point
of
Knives
Curvature
of
Needle
Blade
24
7
Description
of
Oils
Differential Feed
..
Inside Front
Cover
...
16
Edge
Guide,
Floating
Feed
Controls
Feed Dogs,
Setting
Feed Dogs, Tilting
Feed Eccentric Extractor
164203
Feed Eccentrics,
Changing
Feed Eccentrics, Sizes
Recommended
Foot Lifter
Formation
of
Stitches
Gathering
Gauge
164592
Gauge
164859
Hemming
Guides
Knife
Grinder
701-9
Knife
Sharpening
Knives,
Removal
and
Replacement
Left Looper,
Setting
Length
of
Stitch
Looper
Thread
Eyelet,
Setting
Looper
Thread
Stripper
Looper
Thread
Take-up,
Adjustments
Machine
Pulley
Movable
Knife
Needle
Clamp,
Setting
15
...
16
17
17
..
16
...
16
.16
3, 5
4
16
17-21
17-21
14
.
26
....
26
24
19
16
23
23
23
3, 5, 12
24-26
18
2
Needle
Curvature
Gauge
164588
Needle
Guard
Needle,
Setting
Needles
Needles
and
Thread
Needle
Thread
Controller,
Setting
Page
7
....
25
8
..
3, 7
7
22
Oil Flow
Adjustment
in
Looper
Mechanism
6
Preparation
for
Threading
8
Pressure
of
Presser
Foot 13
Right Looper, Installing
21
Right Looper,
Setting
20,
21
Running-in
Machine
Sharpening
Knives
Special
Features
Speed
Spreader,
Installing
Spreader,
Setting
Stationary
Knife
Stitch
Formation
Stitch
Length,
Regulating
Stitch Types .
Stretching
Stripper
Suggestions
for Efficient
Operation
Take-up,
Adjustments
Threading
Threading
Wire
164196
Thread
Tensions,
Regulating
Tools
Trimmer,
Adjustments
Unwinder
Width
of
Bight
X-ray
View
of
Machine
6
26
4
7
21
20,
21
24-26
4
..
16
.. 3,
4,
l
0-12
.16
23
12
23
.....
9-12
.3,10,11
13
3
24,
25
3,9
15,24,25
3

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
DESCRIPTION
Q
-"""'
\l,;;)\)
..
,
~;;;..;..---~~,~~~~~~
.•
ti
....._.
•;;,P./41
Fig. 2.
X-ray
View
of
Class
246K
Machine
(Lubricating System Shown in Solid Black)
Designed
particularly
for
high
quality
blind
stitch
hemming
or
welting
(Stitch Type 503),
Ma-
chines
246K44
and
246K61
produce
high
speed
overedging
and
simultaneous
trimming
in
nylon,
rayon,
balbriggan
knit
goods
and
other
similar
materials.
Available
for
two-thread
and
three-thread
operations,
these
powerful
but
compact
machines
are
capable
of
producing
four
different
overedge
stitches:
Stitch
Types
502, 503,
504
and
505.
Adaptable
for
gathering,
stretching
or
feeding
the
work
uniformly,
these
machines
have
proven
themselves
in
an
almost
endless
list
of
overedge
operations
including
blind
stitch
hemming,
serg-
ing,
gathering,
ruffling,
binding,
scalloping,
cuff-
ing,
side-seaming,
yoking,
ornamental
edging,
closing,
cording,
welting
and
inserting.
GENERAL
CHARACTERISTICS
Curved needles:
Catalogue
#1261 (151 x 7)
regular.
Catalogue
#1263
(151 x 3)
tapered
blade.
Looper and spreader
(or
leapers)
independently
driven,
permitting
variations
in
their
adjustment
in
relation
to
each
other
and
to
the
needle,
to
suit
the
work
required.
Either left
or
right twist of thread
may
be
used
in
needle
and
in
loopers.
3
Adjustable trimmer
cuts
cleanly;
operating
in
advance
of
needles.
Trimmings
guided
into
chip
chute
to
avoid
interference
with
work
and
with
mechanism.
Presser
foot
can
be
swung
toward
left
to
facili-
tate
threading
or
replacement
of
needle
.
Cloth plate
can
be
swung
to
the
left for
conveni-
ence,
when
stitching
small
tubular
pieces
or
when
making
machine
adjustments.
Splash lubricating system,
shown
in
Fig.
2,
automatically
and
continuously
oils
principal
bear-
ings
during
operation.
Oil cooling reservoir
in
rear
of
machine.
Oil level indicator gauge
in
direct
view
of
operator.
Oils
recommended,
see inside
front
cover.
Machine pulley 164231
for
3/8
inch V-belt;
also
used
for
5/16
inch-round
belt.
Machine pulley should always turn over
away
from operator
when
machine
is
in
motion.
ACCESSORIES
AND
TOOLS
Foot
lifter.
Knee lifter
supplied
instead,
when
specified
on
order.
Threading wire
164196.
Tweezers
164204.
Socket
wrench
164197
(for
needle
clamping
nut).
Flat, open-end wrench
10875
(for
feed
eccen-
tric nut).
Screwdriver
85318.
Wrench
8909
(for
spreader
carrier
guide
bar
oil
plug
screw
nut).
Thread unwinder 151031
for
two-
or
three•
thread.
Thread unwinder
228705
(two-thread)
or
228706
(three-thread)
for
nylon
threads
will
be
supplied
instead
of
regular
unwinder,
upon
spe-
cific
order.

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
SPECIAL
FEATURES
Machine
246K44
...
blindstitch hemming
or
welting.
. . . light
and
medium
weight
fabrics
.
. . . one needle,
one
looper,
one
spreader.
...
differential feed.
...
tubular operation
is
accommodated
by
a
small
"horn"
extension
of
the
throat
plate
support.
...
regularly
fitted
for
two-thread
stitch
(Type
#503,
see
Fig. 3).
...
machine
can
also
perform
two
thread
over-
edge
stitching
(Stitch Type
#502),
by
merely
altering
the
thread
tensions
until
the
stitch
formation
changes
from
that
shown
in
Fig. 3
to
that
shown
in
Fig.
4.
See
page
l
0
for
in-
structions
on
threading.
...
machine
will
be
fitted
on
specific order
for
three-thread tight needle thread
stitch
(Type
#504,
see
Fig. 5).
Refer to
page
11
for instruc-
tions
on
threading
.
. . . fittings
available
to
produce
the
three-thread
purl-on-the-edge
stitch
(Type
#505,
see
Fig. 6),
upon specific order.
See
page
12
for
instruc-
tions
on
threading.
...
trimmer,
adjustable.
...
two
feed eccentrics
164915,
bronze,
regularly
supplied
for
14
stitches
to
the
inch.
...
presser foot (wire) hemming guide
164517
for
3/4
inch
hem
regularly
supplied.
This
hemmer
also
available
for
hems
l
/4
inch
to
1-1
/2
inches
in
width,
in
steps
of
l
/8
inch.
See
pages
14
and
15
for
illustrations
of
other
hemmers
available
at
additional
charge
on
specific
order.
. . . maximum speed
6000
stitches
to
the
minute.
4
Fig.
3.
Stitch Formation
(Stitch Type
#503)
~===-,•
•,;;===~
·r;:;;:::.===-,-r::;,,,
===
-------
Fig.
4.
Stitch Formation
(Stitch Type
#502)
Fig. 5. Stitch Formation
(Stitch Type
#504)
Fig. 6. Stitch Formation
(Stitch Type
#505)
Machine
246K6
l
Similar to Machine
246K44,
except-
~
EZ7308
E:Z7J/O
EZ731/
.
..
it
is
equipped
with
a
smaller throat plate sup-
port
for
convenience
when
sewing
smaller
tubular
articles;
especially,
when
sewing
gar-
ments
for
small
children
and
infants.
...
other
parts-throat
plate,
presser
foot,
edge
guide,
etc.-are
adapted
for this
purpose.
See
pages
14
and
15
for
information
about
hem-
ming
attachments
available
upon
specific
order
.
.
..
maximum speed
6000
stitches
to
the
minute.

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
INSTALLATION OF MACHINE AND BASE ON TABLE
Fig. 7. Machine Base on Table, Showing Position and Drill Sizes
of Holes Required for Installation
Place machine and base on table top with belt
groove of machine pulley in line with belt groove
of driving pulley.
Spot position of hole behind machine base, di-
rectly
below chain slot on presser foot lifting lever.
Remove machine from base. Draw outline of
machine base in position on top of table.
Drill hole spotted earlier, 3/4 inch in diameter,
to accommodate chain for presser foot lifting lever.
Using base and belt guard as template, spot
and drill six holes in table for wood screws, as
shown in Fig. 7.
Fasten machine base and belt guard to table
with the six wood screws, described in Fig. 7.
Set machine on rubber cushions at four corners
of base.
FOOT LIFTER:
As the stand recommended for Class 246K
Machines with foot lifter includes a suitable foot
lifter treadle, foot lifter chain 6439, without the
treadle, will be sent with the machine. If, how-
ever, the machine is fitted to a stand or other
equipment which does not have a suitable treadle,
orders should state that foot lifter treadle 4885 is
required and it will also be supplied, without
extra charge.
CAUTION
All of the oil is drained from the machine before it is shipped from the factory.
DO NOT START THE MACHINE UNTIL IT HAS BEEN THOROUGHLY LUBRICATED AS INSTRUCTED
ON PAGE 6.
5

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
SPEED
Maximum
speed
recommended
for
these
ma-
chines
is
6000
stitches to the minute.
5500
stitches
to the minute
is
recommended
for
long runs
or
while
sewing
long stitches.
Maximum
efficient
speed
is
dependent
upon
the
nature
of
the
operation,
the
ability
of
the
operator
and
the
type
of
material
being
sewn.
It
is
advisable
to
operate
these
machines
at
more
moderate
speeds
the
first
few
days,
after
which
they
can
be
run
at
top
speed.
When
the
machine
is
in
operation,
top
of
ma-
chine pulley must
always
turn over
away
from
the operator.
NEEDLES
AND
THREAD
Needles
are
of
curved
blade,Catalogue#l265
(151
x
7)
regular,
in sizes
9
to
12, 14, 16, 18,
19
and
21.
Needles
of
Catalogue#l263
(151 x 3)
with
tapered
blade,
in
sizes
5,
6,
7,
9
and
11
are
available.
Selection of needles
can
make
a
great
differ-
ence
in
the
ease
and
quality
of
the
work.
It
is
important
that
each
needle
be
just
right
for
ma-
chine,
thread
and
work
being
done.
Choose your needle carefully.
The
correct
size
will
permit
thread
to
pass
freely
through
needle
eye;
avoiding
strain
and
breakage
of
thread.
Either
right
twist
or
left
twist
thread
may
be
used.
If
trouble
occurs
during sewing:
Inspect
needle
point.
A
hook
or
burr
may
cause
poor
stitching
or
some
materials
may
be
cut
when
short
stitches
are
used.
Check curvature of each
needle,
as
instructed
below.
Unless
needle
has
the
correct
curvature,
it
may
cause
skipping
of
stitches.
Orders
for
needles
must
specify
the
Quantity
required,
the
Size
number,
also
the
Catalogue
number
...
For
example
...
"100
Size
9,
Catalogue#1265
(
151
x
7)
Needles."
The
best
stitching
results
will
be
obtained
when
using
needles
sold
by
Singer
Sewing
Machine
Company.
CURVATURE
OF
NEEDLE
BLADE
(Gauge
164588,
for
needles of
Sizes
7
to
16 only)
Fig.
9.
Checking
Needle
Curvature
7
Before
making
any
stitching ·adjustments,
the
curvature
of
each
needle
blade
should
be
checked
in
the
following
manner:
Using
Gauge
164588,
shown
in
Fig. 9,
insert
shank
of
needle,
with
its
flat
side up,
in
the
groove
A. Push
the
needle
along
the
groove
as
far
as
it
will
go
against
stop
B.
Tighten
clamping
screw
C.
Swing
the
indicator
D,
slowly
to
and
fro,
along
the
curve
of
the
needle
blade,
observing
the
dis-
tance
between
the
needle
blade
and
the
tip
of
the
indicator.
The tip
of
the
indicator
should
just
make
con-
tact
at
the
needle
eye
and
should
clear
needle
blade,
at
upper
end
of
curve,
by
approximately
.005
to
.006
inch. Use
feeler
gauge.
Reject
any
needle
that
cannot
pass
this
test.

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
LUBRICATION
HS
~
BEFORE
STARTING
MACHINE
Filling Oil Reservoir
Use
"TYPE
A"
or
"TYPE
C"
OIL,
sold
by
Singer
Sewing
Machine
Company.
For
description
of
oil,
see
inside
front
cover
of
this
book.
Apply
this
oil
to
oil filler
cup
on
top
of
machine,
pouring
oil
into
reservoir
until oil
in
the
sight
gauge
is
at
"FULL"
mark,
as
indicated
in Fig. 8.
Check oil sight gauge daily before starting
machine
and
oil
machine,
when
necessary,
as
instructed
in Fig. 8
above.
WHEN A MACHINE HAS
BEEN
IDLE
FOR
A CON-
SIDERABLE
TIME
(OR
AFTER
A MAJOR INSTALLA-
TION OF
PARTS):
Clean
the
machine
thoroughly.
Then
apply
a
few
drops of oil
to
oil
grooves
of
feed
bar
connections
QS, Fig. 8
and
to
spreader
carrier
connection
guide
bar
at
02,
Fig. 8
behind
upper
knife
carrier
and
chip
guard.
Apply
a
drop
of
oil
to
presser
bar
at
HS, Fig. 8. Check oil level
in
reservoir,
as
instructed
in
Fig. 8.
AFTER
MACHINE
IS
INSTALLED
AND
BEFORE
STARTING
THE
MACHINE:
Remove
the
chip
guard
from
the
front
of
the
machine.
Oil Flow Adjustment
Fig. 8. Lubrication
of
Machine
6
Check
the
oil
flow
on
spreader
carrier
connec-
tion
guide
bar
at
02,
Fig.
8.
To
adjust
amount
of
oil flow
on
guide
bar
at
02,
loosen
lock
nut
DS
and
turn
adjusting
screw
LS,
Fig.
8
clockwise
as
far
as
possible.
Oil flow
is
now shut off completely.
Back off
screw
LS
(turning
screw
anti-clock-
wise)
1
/2
turn.
Check
lubrication
again.
To
increase
oil
flow,
turn
screw
LS
anti-clockwise
a
small
amount
and
recheck
lubrication.
If
oil
flow
is
too
great
turn
screw
LS
clockwise
about
1/4
turn
and
recheck.
Never operate machine when oil flow
is
SHUT
OFF
at
LS.
When
correct
oil
flow
is
obtained,
lock
the
nut
DS,
Fig. 8.
Replace
the
chip
guard.
Remove
belt
and
check
freeness
of
machine
by
turning
machine
pulley
by
hand.
Replace
belt.
Finally "run-in" the machine for
approximately
15
minutes
at
a
moderate
speed.

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
SETTING
THE
NEEDLE
Using Socket Wrench
164197
Move
needle
clamp
up
to
its
highest
position.
Insert
needle,
as
instructed
in
Steps 1
to
5
in
Fig.
10.
When
needle
is
correctly
inserted
in
needle
clamp,
securely
tighten
needle
clamping
nut.
(See
Step
6, Fig. 10.)
Fig. 10.
Needle
Correctly Set in
Needle
Clamp
PREPARATION
FOR
THREADING
For
convenience
in
threading
...
. . .
Open
front
cover
plate,
as
instructed
in
Step
1,
Fig.
11.
...
Swing
cloth
plate
toward
left
(Step
2.)
...
Machine 246K61, only: Flip
edge
guide
up
and
out
of
way
.
. . . All Machines: Release
presser
bar
as
instructed
in
Step
4,
and
swing
presser
bar
toward
left.
Fig. 11. Preparation for Threading
8

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
TO
THREAD
UNWINDER
Select
the
unwinder
suitable
for
the
type
of
stitch
and
work
to
be
accomplished.
---·--··
-·-··
··s------
--
:~,:,
I,
i
M
I
\
NEEDLE
i
rREAD
.:59
Fig. 12.
Unwinder
151031
Threaded
for
Two-Thread
Stitch
LEFT
THREAD
Fig. 13.
Unwinder
151031
Threaded
for
Three-Thread
Stitch
NEEDLE
THREAD
Fig. 14.
Unwinder
228706
(for Nylon
Thread)
Threaded
for
Three-Thread
Stitch
9

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
TO
THREAD
THE
MACHINE
FOR
TWO-THREAD
STITCH
(TYPES
#502
AND
#503)
(Stitch Type
#503
regular
for
these
machines)
_,.,,..,.--
Fig. 16. Threading
Ne~dlelhread
Eyelet '
Fig. 17. Threading Wire
164196
IN
LINE
--
WITH
TUBE~-
usE>THREADING
WIRE
/164196
HERE
Fig. 15. Threading the Machine
(Two-Thread
Stitch)
Machine
should
be
equipped
with
needle
thread
controller
164381,
Fig.
45,
page
22
and
with
looper
thread
take-up
164175
and
looper
thread
stripper-and-take-up
164091,
shown
in
Fig. 18.
To
thread
the
machine,
pass
each
thread
through
threading
points
in
the
order
shown
in
Figs.
15,
16
and
18. Double line
indicates
needle
thread.
Solid line
indicates
looper
thread.
Use
threading
wire
164196,
shown
in
Fig. 17,
to
pass
threads
through
threading
tubes,
at
points
indicated
in
Fig.
15.
Draw
four
or
more
inches
of
thread
through
eyelet
in
threading
wire
and
pass
threading
wire
through
required
threading
tube.
NEEDLE THREAD:
Before
passing
needle
thread
through
its
threading
tube,
turn
machine
pulley
over
away
from
you
until
needle
is
at
its lowest
position.
10
Fig.
18. Threading Looper Take-up
Note
method
of
threading
needle
thread
eyelet
as
shown
in Fig. 16.
After
threading
needle
thread
eyelet,
raise
needle
to
its
highest
position
and
pass
thread
from
front
to
rear
through
needle
eye.
When
threading
needle,
double
back
the
end
of
the
thread
and
twist
it;
making
thread
stiff
enough
to
thread
the
needle
eye
easily.
LOOPER THREAD:
Before
threading
looper
turn
machine
pulley
over
from
you
until eye of looper
is
directly in
line with threading tube
underneath
throat
plate.
Pass
looper
thread
through
threading
points,
as
shown
in
Figs.
15
and
18.
BOTH THREADS:
Draw
about
two
inches
of
thread
through
needle
eye
and
through
looper
eye,
with
which
to
start
sewing.

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
TO
THREAD
THE
MACHINE
FOR
THREE-THREAD
TIGHT
NEEDLE
THREAD
STITCH
(TYPE
#504)
Fig. 19.
Threading
Needle
Thread
Eyelet (Tight Stitch)
Fig.
21.
Threading
the
Machine
(Three-Thread
Tight Stitch)
Fig. 20. Threading Looper Take-up
(Three-Thread Tight Stitch)
Machine
should
be
equipped
with
left
and
right
loopers,
with
needle
thread
controller
164151,
Fig.
44,
page
22
and
with
looper
thread
take-up
164175
and
looper
thread
stripper-and-take-up
164091,
shown
in
Fig.
20.
Pass
each
thread
through
threading
points
as
shown
in
Figs.
19,
20
and
21.
IMPORTANT:
Thread
the
needle
thread
(double line)
com-
pletely
flrst.
Thread
right
looper
thread
(dotted line)
com-
pletely
next.
Thread
the
left
looper
thread
(solid line) last.
Use
threading
wire
164196,
shown
in
Fig.
17,
to
pass
threads
through
threading
tubes,
at
points
indicated
in
Fig.
21.
Draw
four
or
more
inches
of
thread
through
eyelet
in
threading
wire
and
pass
threading
wire
through
required
threading
tube.
NEEDLE
THREAD:
Before
passing
needle
thread
through
its
threading
tube,
turn
machine
pulley
over
toward
you
until
needle
is
at
its
lowest
position.
l l
Fig. 22. Right Looper
Observe
the
correct
position
and
method
of
threading
needle
thread
eyelet
as
shown
in
Fig.
19.
After
threading
needle
thread
eyelet,
raise
needle
to
its
highest
position
and
pass
the
thread
from
front
to
rear
through
needle
eye.
LOOPER THREADS:
Pass
each
looper
thread
through
its
threading
points,
as
shown
in
Figs.
20
and
21.
Before
threading
left looper,
turn
machine
pul-
ley
over
from
you
until
the
eye of left looper
is
directly
in
line
with
the
threading
tube
underneath
throat
plate.
When threading right looper,
be
sure that there
is
no
loose
loop of thread
on
end of looper
(see
Fig. 22)
to
cause
thread
breakage.
Draw
about
two
inches
of
thread
through
needle
eye
and
through
each
looper
eye,
with
which
to
start
sewing.

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
TO THREAD
THE
MACHINE
FOR THREE-THREAD PURL-ON-THE-EDGE STITCH
(TYPE
#505)
The
machine
should
be
equipped
with
left
and
right
loopers,
with
needle
thread
controller
164381,
Fig.
45,
page 22
and
with
take-up
parts
164857
and
164288,
shown
in
Fig. 24.
The
machine
is
threaded
for
three-thread
purl-
on-the-edge
stitch
in
the
same
manner
as
for
three-thread
tight
stitch (see
Fig.
19
and
instruc-
tions
on
page
11)
with
the
following
exceptions:
Needle
thread
eyelet,
shown
in
Fig.
23,
may
be
raised
or
lowered,
as
required.
To
change
the
position
of
the
eyelet,
loosen
screw
RS,
Fig.
23.
Move
eyelet
to
desired
position
and
securely
re-
tighten
screw
RS.
The
needle
thread
eyelet
must
be
threaded
as
shown
in
Fig.
23.
The
looper
thread
take-up
must
be
threaded
as
shown
in
Fig. 24.
Fig. 23. Threading Needle
Thread Eyelet (Purl Stitch)
··,
,
.
-"
-,i
'':(
Fig. 24. Threading Looper Take-up
(Purl-on-the-Edge Stitch)
SUGGESTIONS
FOR
EFFICIENT OPERATION
Always turn machine pulley over
away
from you.
Never
allow
oil level
in oil
reservoir
to
drop
below
the
"FULL"
mark
on
the
oil
sight
gauge.
Clean
out
any
lint
around
the
loopers
and
be-
tween
the
feed
rows
of
the
feed
dog.
12
Frequently inspect
area
beneath
presser
bar
hous-
ing
and
behind
upper
knife
lever
cover
and
remove
accumulation
of
lint.
Always
use
lightest tensions
and
lightest
pressure
possible.
Don't forget to remove loop of thread
from
right
looper
before threading.

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
REGULATION
Fig. 25. Regulating Tension of Threads
and Pressure of Presser Foot on Material
THREAD TENSIONS
Tension on needle thread should be just suffi-
cient to set stitch correctly. (See Figs. 3 to 6 on
page 4 for correct stitch formation.)
For average sewing, tension on looper thread
should be very light.
Regulate thread tensions as instructed in Fig. 25.
PRESSURE OF PRESSER FOOT
Correct pressure of presser foot helps feed the
work properly.
Always use lightest pressure possible.
Regulate the pressure of the presser foot on the
material as instructed in Fig. 25.
NOTE: The instructions on the following pages are for Service Representatives.
To insure proper timing and avoid unnecessary repetition, these instructions should be followed
in the order given.
13

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
BLIND
STITCH
HEMMING
ATTACHMENTS
Although
these
machines
are
regularly
sup-
plied
with
presser
foot
wire
hemming
guide
164517
for
3/4
inch
hem,
as
shown
in
Fig. 26,
hemmers
of
this
type
are
also
available
for
hems
l/ 4
inch
to
1-1
/2
inches
in
width.
Other
hemming
attachments
that
fasten
to
bracket
on
presser
bar
housing
are
illustrated
in
Fig.
28.
TO
CHANGE
PRESSER
FOOT WIRE
HEMMING
GUIDE:
Remove
screw
P
with
washer
C
and
guide
0,
Fig.
26,
from
presser
foot.
Replace
desired
guide
with
washer
Con
presser
foot
and
fasten
with
screw
P,
Fig.
26.
TO
CHANGE FROM
PRESSER
FOOT WIRE HEM-
MING
GUIDE TO
HEMMING
ATTACHMENT THAT
IS
FASTENED TO
PRESSER
BAR
HOUSING:
Remove
screw
P
with
washer
C.
Remove
guide
0.
Loosen
screw
A.
Remove
screw
N
and
guard
assembly
B,
Fig.
26.
Insert
bracket
support
D,
Fig.
27
in
housing
and
tighten
screw
A
on
top
of
housing.
Remove
screw
W,
Fig.
27
from
bracket.
Install
one
of
the
hemming
attachments,
shown
in
Fig.
28,
in
bracket
so
that
hemmer
is
suspended
(to left)
over
throat
plate
and
screw
W slips
through
screw
hole
X,
Fig.
28
in
attachment.
Se-
curely
tighten
screw
W.
14
Fig. 26. Machine with
Hemming Guide
164517
164237
Bracket
Support
Fig. 27. Bracket Support for
Hemming Attachments
160381
Flip-up
Folder
160384
Yielding
Folder
Fig. 28. Additional Blind
Stitch
Hemming
Attachments
Available
D

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
/
Fig. 29. Floating
Edge
Guide
on
Machine
246K44
··•,
~:·~·'.
-"\
.
·,
Fig.
30.
Floating Edge Guide
on
Machine 246K61
15
TO
ADJUST
THE
ATTACHMENT
TO
CONFORM
TO
WIDTH
OF
BIGHT:
Loosen
hexagon-head
screw
Y, Fig.
27
and
turn
adjusting
screw
Z,
over
away
from
the
operator
for a
narrower
bight
or
over
toward
the
operator
for a
wider
bight.
FLOATING
EDGE
GUIDE
The
floating
edge
guide
L,
Figs.
29
and
30
should
be
adjusted
to
conform
to
thickness
of
ma-
terial
being
sewn.
To
adjust,
turn
screw
K,
Figs.
29
and
30
over
away
from
operator
to
accommodate
a
lesser
thickness
or
over
toward
operator
to
suit
a
greater
thickness
of
material.

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
TO CONTROL LENGTH OF STITCH
Fig. 31. Feed Eccentric
Extractor
164203 and
Eccentric 164915, bronze
Q
The length of stitch is determined by the feed
eccentrics in use-
Each feed eccentric is marked with the number
of stitches it makes, as shown at F, Figs. 31 and 32.
Feed Eccentric 164915, bronze, can be supplied
to make 4 to 16, 18, 20, 22, 24, 28, 32, 36, 40,
45, 50, 60, 70, 80 and 100 stitches to the inch.
Unless otherwise ordered only two feed eccen-
trics making approximately 14 stitches to the inch
will
be supplied.
REMOVING FEED ECCENTRICS:
Swing cloth plate Q, presser bar and feed ec-
centric cover S, Fig. 32 out to the left.
Using
Wrench 10875, remove hexagon head
nut Land washer from the shaft M, Fig. 32.
s
Screw the feed eccentric extractor J, Fig. 31
into threaded hole E of outer eccentric. Pull gently
with extractor J to remove outer eccentric. Inner
eccentric can then be removed, in the same
manner.
E B2 C2
G M L
EZ922I
16
Fig. 32. Changing Length of Stitch
INSTALLING FEED ECCENTRICS:
When replacing each feed eccentric, be sure
that the stamped number is on outside face of
eccentric, as shown at F, Fig. 32.
The keyway on the eccentric should fit over key
at G on shaft M, Fig. 32. Line-up front and back
feed bars and install eccentrics. When the feed
eccentrics are in position, replace the washer and
hexagon-head nut L. Screw the hexagon-head nut
securely on the shaft M.
FEED CONTROLS
THE DIFFERENTIAL FEED consists of two feed
dogs B2 and C2, Fig. 32 independently actuated
by two feed eccentrics. The inner feed eccentric
(which is placed on the shaft first) controls the
movement of the front feed dog C2. The outer
feed eccentric (which is placed on the shaft last)
controls the movement of the rear feed dog B2.
To feed the work evenly: use two feed eccen-
trics marked for the same stitch length.
To gather: for front feed dog use feed eccentric
that is marked for longer stitch length than that
used for rear feed dog. Place eccentric marked for
longer stitch length on shaft first.
To stretch the material while sewing: for front
feed dog use feed eccentric that is marked for a
shorter stitch length than that used for rear feed
dog. Place eccentric marked for shorter stitch
length on shaft first.

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
TO
SET
THE
FEED
DOGS
AT
THE
CORRECT
HEIGHT
.~::~
'.,l
Using
Gauge
164592
for
Machine
246K44
and
Gauge
164859
for
Machine
246K61
(See Fig.
33)
B2
C2
E2787S
A2
K2
Q
L2
H2 s G2
:29230
Fig.
33.
Setting the Feed Dog
(See inset at top left of
above
illustration
for position
of
Gauge
164859
on Machine
246K61)
CHECKING
HEIGHT
OF
FEED
DOGS:
Swing
the
presser
foot
out
to
the
left,
and
turn
the
machine
pulley
over
from
you
until
the
feed
dogs
are
at
their
highest
position.
Machine
246K44:
Place
the
gauge
J2,
over
the
front
feed
dog,
as
shown
in
Fig.
33.
Machine
246K61:
Correct
position
of
Gauge
164859
for
these
machines
is
shown
at
J2
in
inset
at
top
left
corner
of
Fig.
33.
All Machines:
Gauge
J2
must
rest
firmly
upon
the
throat
plate
U2.
At
this
setting,
front
feed
dog
should
just
touch
the
bottom
face
F2
of
the
gauge.
Set
rear
feed
dog
at
same
height
as
front
feed
dog.
ADJUSTMENT:
Swing
the
cloth
plate
Q
and
the
feed
eccentric
cover
S
out
to
the
left.
17
Loosen
the
adjusting
screw
G2
and
raise
or
lower
the
front
feed.
dog
C2,
as
required.
Then
tighten
screw
G2.
Loosen
adjusting
screw
H2
and
raise
or
lower
the
rear
feed
dog
B2,
as
required.
Then
tighten
screw
H2.
TO
TILT
THE
FEED
See
Fig.
33
When
it
is
desired
to
tilt
the
feed,
first
set
it
at
the
correct
height
as
described
above.
Then
loosen
the
hinge
pin
set
screw
K2
at
the
rear
of
the
ma-
chine
just½
turn.
To tilt
the
feed
up
in
the rear
and
down
in the
front
of
the
needle,
slowly
turn
the
hinge
pin
L2
over
toward
the rear
of
the
machine,
until
the
desired
amount
of
tilt
is
obtained.
To
tilt
the
feed
down
in
the rear
and
up in the
front
of
the
needle,
slowly
turn
the
hinge
pin
L2
over
toward
the front
of
the
machine,
until
the
desired
amount
of
tilt
is
obtained.
Then
tighten
the
screw
K2.

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
TO
SET
THE
NEEDLE
CLAMP
AT
THE
CORRECT
HEIGHT
Using
Gauge
164592
for Machine
246K44
and
Gauge
164859
for Machine 246K61
(See
Figs.
34
to
36)
CHECKING HEIGHT OF NEEDLE CLAMP:
Turn
the
machine
pulley
over
from
you
until
the
needle
clamp
R2
reaches
its
highest
position.
Swing
the
presser
foot
and
cloth
plate
out
to
the
left.
Machine 246K44:
Remove
the
needle
and
the
throat
plate.
Machine
246K6
l:
Remove
needle,
but
DO NOT
REMOVE THROAT
PLATE.
Both
Machines:
Remove
floating
edge
guide.
(See page 15.)
Turn
the
machine
pulley
over
from
you
until
the
needle
clamp
R2
reaches
its
lowest
position.
Slip
"LOW"
end
of
the
gauge
J2
between
the
needle
clamp
and
throat
plate
seat
V2,
on
Ma-
chine
246K44,
as
shown
in Fig. 34,
or
between
needle
clamp
R2
and
throat plate U2,
on
Machine
246K61
as
shown
in
Fig.
35.
At
this
setting,
the
needle
clamp
R2
should
just
touch
top
surface
02
on
"LOW"
end
of
gauge
J2.
ADJUSTMENT:
Remove
the
top
frame
cover
and
loosen
the
clamping
screw
T2
and
the
two
screws
P2
and
Y,
Fig.
36.
Raise
or
lower
the
needle
clamp
R2,
Figs.
34
and
35
as
required.
To
secure
the
needle
clamp
in
the
correct
posi-
tion,
first
securely
tighten
the
screw
T2,
then
tighten
the
two
screws
P2
and
Y.
18
R2
J2
~.,
..
R2
02
4"'':·-
. •
~
Fig.
34.
Checking
the
Needle
Clamp
Height
£27876
Fig.
35.
Position
of
Gauge
164859
on
Machine
246K61
EZ7379
P2 Y
Fig.
36.
Adjusting
the
Needle
Clamp