Singer 246-3 - Knife and Trimmer Adjustments; To Adjust the Stationary Knife for Width of Bight; To Adjust the Movable Knife in Relation to the Stationary Knife; To Remove the Movable Knife

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20
TO
ADJUST
THE
TAKE-UP
FOR
BOTH
LOOPER
THREADS
See Fig.
25
To
get
more
thread
through
both
loopers,
lower
the
right
toke-up
A4,
or
rnise
the
left
take-up
X3.
To
get
less
thread
through
both
loopers,
rnise the
right
take-up
A4,
or
lower
the
left
toke-up
X3.
TO
ADJUST
THE
SLACK
ON
THE
RIGHT
LOOPER
THREAD
See
Fig. 25
When
the
right
looper·
D3
is
moved
to
its
extreme
left
positio11,
the
right
looper
threod
between
the
eyelet
B4
Oll(I
the
tension
discs
M4
should
hove
o
slight
slock. To
decreose
the
slcrck
on
right
looper
threc1d,
lower
eyelet
B4.
To
increase
the
slock
011
r·ight I001,er·
threCICI,
raise
eyelet
B4.
TO
ADJUST
THE
STATIONARY
KNIFE
FOR
WIDTH
OF
BIGHT
See
Fig.
26
The r·elation
of
the
stationory
knife
J4
to
the
needle
detern1ines
the
width
of
bight.
To
adjust,
loosen
the
set
screw
T4
and
move
the
stc1tionc11y
knife
holder
S4
to
the
left
or
right,
c1s
required
Securely
tighten
thn
snt
screw
T4.
Then
adjust
the
movable
knife
in
relation
to
the
statior1ory
knife,
os descr
ibcd
below.
For son'.e
types
of
work,
the
width
of
bight
lll1Jst
conforrn
to
the
width
of
the
chaining-off
finger.
TO
ADJUST
THE
MOVABLE
KNIFE
IN
RELATION
TO
THE
STATIONARY
KNIFE
See
Fig.
26
To
odjust
the
movcible
knife
D4,
in
relation
to
tho
stotionmy
knife
J4,
remove
the
clomp
screw
Q4,
the
kn'rfe
clo111p
Z3,
crncl
the
chip
ejector
04.
Loosen
the
set screw
W4,
Fig.
20,
page
15,
crnd
move
the
knife
holder·
P4
to
the
right
or
left,
until
the
cutting
edge
of
the n1ovcible
knife
D4,
ot
its
lowest
position,
is
slightly
below
the
cutting
edge
of
the
stationary
knife
J4.
Securely
tighten
the
set screw
W4,
Fig.
20.
Then
replace
the
chip
ejector
04,
the
knife
clmnp
Z3
and
the
clamp
screw
Q4.
While
lightly
pressin<J
the
movable
knrfe
D4
downward
ogoinst
the
stationary
knife
J4,
ti(Jhten
the
screw
Q4.
TO
REMOVE
THE
STATIONARY
KNIFE
See Fig.
26
To
re111ove
the
stotionary
knife
J4,
loosen
the
nut
V4,
and
clrc,w
the
knife
J4
upward
and
out.
21
TO
REPLACE
THE
STATIONARY
KNIFE
See Fig.
26
lo
replcice
ihe
stotionory
knife
J4, push the
knife
downward
in
the
knife
holder
S4,
unlil
the
,utting
ed~Je
of
ihe
k11ife
is
fluslr
with
the
throot
plate
U2.
l
lwn
securely
tir1lrt,
0
I1
the nut
V4.
T4
Fig. 2
6.
Adjusting the l
rim
mer
TO
REMOVE
THE
MOVABLE
KNIFE
See Fig.
26
.
To
remove
the
rnovobl
e
knife
D4,
remove
the
clomp
screw
Q4,
the
knrfe
clomp
Z3,
the
knife
guard
C5,
crnd
the
chip
ejector
04.
Tlien
lift
the
knife
D4
from
the
knife
holder
P4.
TO
REPLACE
THE
MOVABLE
KNIFE
See
Fin,.
26
nnd
77
To
reploce
the
movable
knife D4,
slip
the
knife
rn
knife
holder
P4,
reploce
the
chip
ejector
04,
the
knife
clomp
Z3,
the
knife
quord
C5,
and
the
clomp
screw
Q4.
Press
the
movoble
knife
D4
downword
ogo·rnst the
stotionary
knife
J4
ond
securely
tighten
the
clomp
screw
Q4.
fher1 turn the
111ochinc
pulley
ov,,r
from
you,
until
ilw
lowest
point
X4,
ol
ilie
cuttinD
edue
ol
the nHw-
cible
knife
D4,
Iust rec,cl,es lire
culti11~1
t:dDc
ut
ilw
stotiorrnry
knife
J4,
us
slrown
i11
Fig.
27.
Luoscn
the
set
scrr,w
T4
sufficiently
to
releme
the
spring
be-
hind the
stotionory
knife
J4,
permittinsJ the
stotionury
knife
to
mokc, o
tiqht
sr·rir1q
contoct
wilh
the
rnovuhle
knife
D4.
·1
hen scecurcly ti~ihten the set
screw
T4.
Fig.
27
Contact
Point
of
Knives