2.
Turn stitch width dial A
to
"4".
3.
Turn eccentric stud A
in
the needle
bar
frame pitman (Fig.
107)
so
that
its
lobe
is
at
the top.
4.
Turn eccentric .stud B (Fig.
106)
to
set
the
needle
bar
as
for
to
the right
(toward
the
balance
wheel)
as
possible.
5. Loosen
zigzag
regulator crank
on
zigzag
regulator stud b (Fig. 1
04)
just
sufficiently
to
permit the Iotter
to
be
adjusted
from
above
with the
aid
of
o
slender screwdriver.
6. Push
zigzag
finger-tip control F up
as
far
as
it will
go
and,
7.
while the machine
is
running, adjust zigzag regulator stud b
so
that
the
needle
bar
makes no vibrating motion.
8.
Release zigzag finger-tip control F
and
tighten the set screw
on
the
zigzag
regulator
crank. Again push up zigzag finger-tip control F
and
check
to
see
that
the
needle
bar
does
not
swing sideways.
9.
Set
stitch width dial A
on
"0", run the machine
and
turn
regulat
ing screw e
(Fig.
104)
to
the
right
or
left,
as
appropriate,
until
the
needle
bar
ceases
to
swing sideways.
10.
Turn stitch width dial A
to
"4"
and
set
needle position lever
Bat
its central
position. Turn eccentric stud A (Fig.
107)
to center the needl·e
in
the needle
plate
slot.
11.
Rotate the bevel
gear
on
the
arm
shaft
until the needle,
as
it descends
on
the right
and
left
of
its throw,
ceases
vibrating when its
point
has
reached o
position
about
5
/32N
to
1
/•N,
or
4
to
6
mm,
above
the needle
plate.
(See
also
the
second
paragraph
on
page
48).
12.
Turn stitch width dial A
to
"0",
and
set
needle position lever B
at
its left
position.
13
. Depress zigzag finger-tip control F
repeatedly
to
check
whether
the
needle
does
not
vibrate.
If
adjustment
is
required, loosen hexagon screw c
on
the
needle position com finger (Fig.
104)
and
the
lock nut
on
regulating screw d,
and
turn this screw
in
or
out
while
operating
zigzag finger-tip control
F,
until
any
needlle vibration
has
been eliminated. This will normally
be
the
case
when the
clearance
at
f (Fig.
104)
is
5
/32",
or
4
mm.
14. Put needle position lever B
in
the central notch.
15.
Adjust the needle throw
in
relation
to
the center line
in
the
needle
plate
slot by means
of
eccentric stud B (Fig.
106)
.
To
make this adjustment, turn
stitch width
dial
A
to
"4", then
to
"0".
16.
Set
stitch width dial A
on
"0"
and
put
needle
position lever B
in
the central
notch. Turn eccentric stud A (Fig.
107),
as
may
be
appropria
te
to
center
the
needle
in
the
needle
plate
slot.
17.
Double-check
the
position
of
the needle
and
of
the needle throw
in
relation
to
the
needle
plate
slot
and,
if necessary,
repeat
the
adjustments discussed
in
paragraphs
15
and
16 above.
To
check the correct setting,
place
a piece
of
cardboard
under
the needle.
Important
Having
made
this adjustment conscientiously, tighten all
set
screws securely.
88
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