14
.
ADJUSTING
THE
HEIGHT
OF
THE
KNEE
LIFTER
(
FIG
.
18
,
19
)
1
.
Adjusting
the
position
of
the
thread
trimming
cam
.
If
you
run
the
handwheel
of
the
machine
,
the
needle
bar
goes
from
the
bottom
up
to
5mm
,
then
the thread
trim-
ming
solenoid
④
is
pressed
to
impel
the
roller
ball
touches
to
the
concave
of
the
thread
trimming
cam
①
,
Then
use
the
position
screw
②
to
tighten
it
in
casual
.
And
then
replace the
thread
trimming
solenoid
④,
while
loose
the
screw
②
to
adjust
the
cam
①,
the
clearance
of the
end
plane
between
the
cam
and
thread
trimming
driving
shaft
is
0
.
5mm
.(
Use
the
torion
with 40Kgf
·
cm
to
tighten
the
position
screw
②)
2
.
Adjusting
the
position
of
the
counter
knife
and
moving
knife
.
When
the
head
of
the
thread
trimming
driving
shaft
③
exceeds
the
cam
,
the
mesh
between
the
front place
of
the
counter
knife
⑧
and
the
edge
of
the
moving
knife
⑦
is
0
.
2
-
0
.
5mm
.
If
they
are
not meshed
,
moves
the
knife
shaft
crack
rod
⑥
before
the
thread
trimming
driving
shaft
exceeded
the cam
①,
the
front
plane
of
the
counter
knife
⑧
and
the
edge
of
the
moving
knife
is
meshed
,
then tighten
the
screw
⑤.
1
.
The
standard
height
of
the
presser
foot lifted
using
the
knee
lifter
is
10mm
.
2
.
You
can
adjust
the
presser
foot
lift
up to
13mm
using
knee
lifter
adjust
screw
①. (
The
max
.
lift
sh-
ould
be
9
mm
for
the
A
type
.)
3
.
When
you
have
adjusted
the
presser
foot lift
to
over
10
mm
,
be
sure
that
the
bottom end
of
needle
bar
②
in
its
lowest
position does
not
hit
presser
foot
③.
Fig
.
18
Fig
.
19
①
②
③
6
28
