Brother International EF4-B561 Service Manual - Page 25

Procedures, PRESSER, MECHANISM, Thread, screw

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Procedures ~r irk 0 0.OImm (Note) This adjustment is carefully done before shipment so that it is not necessary to do it. However, if it is needed, do it very carefully. 16 Make sure it that upper and lower knives are engaged and lower knife is pressed against upper knife by spring and then fasten lower knife holder. 17 Place the thread between upper and lower knives in the fore and rear parts, and see that the thread can be sharply cut. Thread a FEED AND PRESSER FOOT MECHANISM Cl) e e (B561, B571) (B581) Procedures Q'ty of screw I Remove needle plate. 2 2 Adjust chain feed dog 0 at the same level as main feed dog. 1 (In case of thicker thread and knitting wool and/or chaining-off hardly come out, adjust chain feed dog to a height of 0.3 ^ 0.5mm below main feed dog.) 3 Turn the pulley until under looper to the left mostly, temporarily fasten main feed dog ID on main feed bar Q. 4 Temporarily fasten differential feed dog 0 on differential feed bar Q. 1 5 Install needle plate on needle plate support bracket. 2 6 Turn the pulley until feed dogs are raised to the highest position, and adjust them to the following height above the top of needle plate. 1.0mm for thin materials 1.3mm for medium materials 1.5mm for thick materials However, in case of denim specification of safety stitch, its height is 1.3mm. - 23 -

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Procedures
0
0.OImm
~r
ir
k
(Note)
This
adjustment
is
carefully
done
before
shipment
so
that
it
is
not
necessary
to
do
it.
However,
if
it
is
needed,
do
it
very
carefully.
16
Make
sure
it
that
upper
and
lower
knives
are
engaged
and
lower
knife
is
pressed
against
upper
knife
by
spring
and
then
fasten
lower
knife
holder.
17
Place
the
thread
between
upper
and
lower
knives
in
the
fore
and
rear
parts,
and
see
that
the
thread
can
be
sharply
cut.
a
FEED
AND
PRESSER
FOOT
MECHANISM
Thread
Cl)
e e
(B561,
B571)
(B581)
Procedures
Q'ty
of
screw
I
Remove
needle
plate.
2
2
Adjust
chain
feed
dog
0
at
the
same
level
as
main
feed
dog.
1
(In
case
of
thicker
thread
and
knitting
wool
and/or
chaining
-off
hardly
come
out,
adjust
chain
feed
dog
to
a
height
of
0.3
^
0.5mm
below
main
feed
dog.)
3
Turn
the
pulley
until
under
looper
to
the
left
mostly,
temporarily
fasten
main
feed
dog
ID
on
main
feed
bar
Q.
4
Temporarily
fasten
differential
feed
dog
0
on
differential
feed
bar
Q.
1
5
Install
needle
plate
on
needle
plate
support
bracket.
2
6
Turn
the
pulley
until
feed
dogs
are
raised
to
the
highest
position,
and
adjust
them
to
the
following
height
above
the
top
of
needle
plate.
1.0mm
for
thin
materials
1.3mm
for
medium
materials
1.5mm
for
thick
materials
However,
in
case
of
denim
specification
of
safety
stitch,
its
height
is
1.3mm.
—
23
—