V.
AUTOMATIC
PRESSER
FOOT
LIFTER,
AK-2
(Optionalattachment)
The automatic
presser
foot lifter
AK-2
is an optional attachment
which
is capable of liftingthe
presser
foot andholdingit at the
heigliest
position for 10 to 15secondsafter thread
trimming
has
been made. A special
motor
is used for this lifter AK-2.
1.
How
to
operate
AK-2
Knee
switch
If you want to raise the presser foot during a
sewing work, press the
knee
switch.
Such raised presser foot will be comming
down
immediately
after
the knee switch is
released.
If you want to bring down the presser foot
which
has
been
rai.sed as
the
result
of
an
auto
matic run, tread on the pedal forwards (toe-
down)
or
push
and release
the
knee
switch.
2.
Adjusting
the
presser
lifter
stroke
1. Loosen
the
lock
nut
of
the
coupler.
2. Lower the presser
foot
stopper
(A) fully
by loosening
the
lock
nut.
3.
Push
the
knee
switch
to
drive
the
solenoid.
4. You can adjust the stroke of the presser
foot by rotating the plunger on the far
side
of
the
solenoid;
the
stroke
is
increased
by a
clockwise
turn
and
is
decreased
by
a
counterclockwise
turn.
(The
maximum
stroke
performed
by
the
presser
foot
is
about
8mm(5/16")).
5. Raise
stopper
(A)
until
it
hits
the
oil reser
voir by activating the solenoid.
6. Raise the
stopper
(A) by
rotating
it
ano
ther
half
turn
after
releasing
the
knee
switch.
Tighten the lock
nuts
of the
stopper
(A) and the
coupler
respectively.
Loosen the
lock
nut
of
the
stopper
(B), push the presser
lifter
lever
towards
the
solenoid
with
your hand and adjust the height of the stopper (B) so that the playing gap between the top
end/of the knee lifter rod and the knee lifter connecting rod located on the machine head
become about
lmm(3/64").
After obtaining a proper position, retighten each lock nut.
SPECIAL
SWITCH
TO
HOLD
THE
NEEDLE
AT
THE
TOP
POSITION
(Optional
attachment)
We are also ready to supply you with a special switch to hold the needle at the top position when
the machine is stopped during a sewing work with the pedal at the neutral position. This switch
is operated with
your
knee.
For
further details, please
contact
our
agent in
your
area or our main
business
office.
—
22
—
VI.
Coupler
Presser lifter
stopper
(B)
Presser
lifter
stopper
(A)
V.
Presser
lifter
lever
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