Brother International BAS-416 Service Manual - Page 44

inspection

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4. Adjustment A CAUTION A Turn off the power switch and disconnect the power cord from the wall outlet at the following times, otherwise the machine may operate if the start switch is pressed by mistake, which could result in injury. •When carrying out inspection, adjustment and maintenance If the power switch needs to be left on when carrying out some adjustment, be extremely careful to observe all safety precautions. Maintenance and inspection of the sewing machine should only be carried out by a qualified technican. 4-1. Adjusting the needle bar height (when the needle bar is raised 2 mm) NU • *.200 NH,I• 180° T I STOP ly POSITION * BAS-412A 416A BES-1210AC * BAS-401 It ll O STOP POSI 10 10.8mm 1h Tighten I the screw so (7-7,1 that these clearances are even Needle bar guide rail Do not strike here. Needle bar guide rai,l/ 1. Turn the pulley 0 to set the needle bar to its lowest point. (Turn the pulley until II mark on the pulley is aligned with the one on the belt cover.) 2. Insertthe positioning bar @ into the hole in the side of the machine head, and secure the upper shaft. 3. Loosen the screw of the needle bar clamp © when the needle tip is positioned 10.8 mm above the center of the rotary shaft. Adjust the position of the needle bar thread guide so that the set screw 0 on it is turned 25° - 30° to the right when viewed from the front. Tighten the screw of the needle bar clamp O. NOTE When tightening the screw of the needle bar clamp, the hole in the needle bar thread guide should face the front. o 4. Set the needle bar to its highest point. Lightly press the top dead center stopper 0 toward the cushion rubber 0, and tighten the bolt so that it faces the front. NOTE Make sure that the stopper does not strike the needle bar guide rail. 5. Remove the positioning bar @ from the machine head. 37 BAS-401 412A 416A • BES-1210AC

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4.
Adjustment
A
CAUTION
A
Turn
off
the
power
switch
and
disconnect
the
power
cord
from
the
wall
outlet
at
the
following
times,
otherwise
the
machine
may
operate
if
the
start
switch
is
pressed
by
mistake,
which
could
result
in
injury.
•When
carrying
out
inspection,
adjustment
and
maintenance
If
the
power
switch
needs
to
be
left
on
when
carrying
out
some
adjustment,
be
extremely
careful
to
observe
all
safety
precautions.
Maintenance
and
inspection
of
the
sewing
machine
should
only
be
carried
out
by
a
qualified
technican.
4-1.
Adjusting
the
needle
bar
height
(when
the
needle
bar
is
raised
2
mm)
NU
•
NH,I•
T
I
STOP
y
l
POSITION
*.200
180
°
O
*
BAS
-412A
416A
BES-1210AC
10.8mm
It
ll
STOP
POSI
10
*
BAS
-401
1h
Tighten
I
the
screw
so
(7-
7
,1
that
these
clearances
are
even
Needle
bar
guide
rail
Do
not
strike
here.
Needle
bar
guide
rail
,/
1.
Turn
the
pulley
0
to
set
the
needle
bar
to
its
lowest
point.
(Turn
the
pulley
until
II
mark
on
the
pulley
is
aligned
with
the
one
on
the
belt
cover.)
2.
Insertthe
positioning
bar
@
into
the
hole
in
the
side
of
the
machine
head,
and
secure
the
upper
shaft.
3.
Loosen
the
screw
of
the
needle
bar
clamp
©
when
the
needle
tip
is
positioned
10.8
mm
above
the
center
of
the
rotary
shaft.
Adjust
the
position
of
the
needle
bar
thread
guide
so
that
the
set
screw
0
on
it
is
turned
25°
-
30°
to
the
right
when
viewed
from
the
front.
Tighten
the
screw
of
the
needle
bar
clamp
O.
NOTE
When
tightening
the
screw
of
the
needle
bar
clamp,
the
hole
in
the
needle
bar
thread
guide
should
face
the
front.
4.
Set
the
needle
bar
to
its
highest
point.
Lightly
press
the
top
dead
center
stopper
0
toward
the
cushion
rubber
0,
and
tighten
the
bolt
o
so
that
it
faces
the
front.
NOTE
Make
sure
that
the
stopper
does
not
strike
the
needle
bar
guide
rail.
5.
Remove
the
positioning
bar
@
from
the
machine
head.
37
BAS
-401
412A
416A
•
BES-1210AC