Disengaging The Upper Knife - Baby Lock BL4-428 Instruction Booklet

7-1
Disengaging the upper
knife
1.
Open
the
front
cover of the machine.
2. With your left
hand,
firmly
push the upper knife holder arm
to
the righç then rotate the knife
holder knob clockwise
with your
right
hand
until the knife
is raised
to
its
highest
position.
You
will
feel
it
"snap" into
a
locked position.
3.
Close
the
front
cover
As
you
sew
with the
upper
knife
disengaged, be sure
to
align
the
fabric
edge
with
the
right
edge
of
the
needle plate
as
it
is
fed under the presser
foot. lf
you fail to
do this, the fabric
edge
will
become entangled
with
the loopers and could result in
damage
to the machine. Should
a"fabricjam"
occur, stop sewing
immediately.
Raise
the
needle and
the presser foot,
and use
the tweezers to free the fabric from the loopers.
lf
necessary, remove
the
presser
foot for
better
access.
To
return the upper knife
to cutt¡ng position,
push
the
upper
knife
holder arm
to
the right and rotate
it
counter-clockwise until the knife
is
completely down
and
resting
firmly
against
the lower blade. You
will
feel
it
"snap"
again into cutting
position.
Upper knife
der arm
Push
+
\
Upper
ti,
Upper knife
holder
knob
Figure
2O
11