25
.
ADJUSTING
THE
THREAD
TAKE
-
UP
STROKE
(
FIG
.
30
)
1
.
When
sewing
heavy
-
weight
materials
,
move
thr-
ead guide
①
to
the
left
(
in
direction
"
A
")
to
increase
the
length of
thread
pulled
out
by
the
thread
take
-
up
.
2
.
When
sewing
light
-
weight
materials
,
move
thread
guide
①
to
the
right
(
in
direction
"
B
")
to
decrease
the
length of
thread
pulled
out
by
the
thread
take
-
up
.
3
.
Normally
,
thread
guide
①
is
opsitioned
in
a way
that marker
line
"
C
"
is
aligned
with
the
center
of
the
screw
.
Fig
.
30
6
33
26
.
PEDAL
PRESSURE
AND
PEDAL
STROKE
(
FIG
.
31
)
1
.
Adjusting
the
pressure
required
to
depress
the front
part
of
the
pedal.
1
)
This
pressure
can
be
changed
by altering
the
mounthing
position
of
pedaling
pressure
adjust spring
①.
2
)
The
pressure
decreases
when
you
hook
the
spring
on
the
left
side
.
3
)
The
pressure
increases
when
you
hook
the
spring
on
the
right
side
.
2
.
Adjusting
the
pressure
required
to
depress
the back
part
of
the
pedal
1
)
This
pressure
can
be
adjusted
using
regulatorscrew
②.
2
)
The
pressure
increases
as
you
turn
the
regulator
screw
in
.
3
)
The
pressure
decreases
as
you
turn
the
screw cut
.
3
.
Adjusting
the
pedal
stroke
1
)
The
pedal
stroke
decreases
when
you
insert
con-
necting
rod
③
into
the
left
hole
.
Fig
.
31
①
②
③
①
A
B
C
