3-6.
Auto-lifter
The Auto-lifter is available as an option.
It is
designed
to
automatically
raise
and
hold
the
presser
foot
for60
seconds
orfor10
minutes
after
completion
of thread trimming.
To
operate
the Auto-lifter,
the
function selector switch on
the
main circuit board should be set to ON.
(When
the Auto-lifter is added to a
version
whichwasnot originally
designed
for the
AK-30,
AK-33
or
AK-31,
AK-34,the transistor circuit board assemblyand pedal spring(AK-31,AK-34)in addition to the AK-30,
AK-33
or
AK-31,AK-34).
1) How to use
the
Auto-lifter
The Auto-lifter comes in two different types.
Knee
switch
AK-30,
AK-33
Fig. 3-11
AK-31,
AK-34
Neutral
Presser foot lifting
\ Thread
trimming
When
it is
necessary
to stop
sewing
and
raise
the
presser
foot
during
sewing,
depress
the
knee
switch
(depress
the
back
partof the
pedal
for the
AK-31,
AK-34).
The
moment
you
release
the
switch,
the
presser
foot
comes
down.
To
lower
the
presser
foot
immediately
after
it
has
been
raised
automatically,
depress
the
front
part
ofthe
pedal
or
release
the
knee
switch
after
depressing
it
(for
the
AK-31,
AK-34,
depress
the
back
partof
the
pedal).
2)
Adjusting
the
height
ofthelifter
(AK-33,
-34)
Rotate the solenoid shaft using screwdriver O .
then tighten the clampingscrew usingscrewdriver
® .
At this time, adjust the solenoid
while
pressing
it
to
the
direction
of
the
arrow.
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27
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