Brother International DB2-B791 Service Manual - Page 30

Presser, mechanism, Needle

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4. Presser foot mechanism 0 0 0-4 0 0 Feed dog • •• 0 6 mm (1) Insert the presser bar 0 into the presser bar guide bracket from above the arm and lightly tighten the screw 0. (2) Insert the presser spring guide into the presser spring 0 and secure it with the presser adjusting screw and the nut O. (3) After raising the presser bar 0 using the presser bar lifter (3, secure the presser foot Oand the sensor guard ©with the screw (D. 0 (4) Adjust the presser foot to approximately 6 mm above the needle plate by removing the face plate cap 0. © and loosening the screw 0. Then fasten the screw 5. Needle bar mechanism 0 M-\41 me' Needle bar bracket bushing 0 (1) Insert the needle bar bracket 0 into the needle bar bracket bushing and the set collar 0. Then fasten the screw O. (2) Secure the needle feed arm and the needle feed link © through the stud O to the needle bar bracket 0 with the screws 0 and O. (3) Secure the needle bar bracket guide ©with the two screws O. (4) Insert the needle bar fD into the needle bar clamp 0 from above the arm, and fasten the screw ID. (5) Install the oil caps m and ®. - 29 -

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4.
Presser
foot
mechanism
0
0
0-
4
0
0
•
• •
Feed
dog
0
6
mm
(1)
Insert
the
presser
bar
0
into
the
presser
bar
guide
bracket
from
above
the
arm
and
lightly
tighten
the
screw
0.
(2)
Insert
the
presser
spring
guide
into
the
presser
spring
0
and
secure
it
with
the
presser
adjusting
screw
and
the
nut
O.
(3)
After
raising
the
presser
bar
0
using
the
presser
bar
lifter
(3,
secure
the
presser
foot
Oand
the
sensor
guard
©with
the
screw
(D.
(4)
Adjust
the
presser
foot
0
to
approximately
6
mm
above
the
needle
plate
by
removing
the
face
plate
cap
©
and
loosening
the
screw
0.
Then
fasten
the
screw
0.
5.
Needle
bar
mechanism
M—\
41
0
me'
Needle
bar
bracket
bushing
(1)
Insert
the
needle
bar
bracket
0
into
the
needle
bar
bracket
bushing
and
the
set
collar
0.
Then
fasten
the
screw
O.
(2)
Secure
the
needle
feed
arm
and
the
needle
feed
link
©
through
the
stud
O
to
the
needle
bar
bracket
0
with
the
screws
0
and
O.
(3)
Secure
the
needle
bar
bracket
guide
©with
the
two
screws
O.
(4)
Insert
the
needle
bar
fD
into
the
needle
bar
clamp
0
from
above
the
arm,
and
fasten
the
screw
ID.
(5)
Install
the
oil
caps
m
and
®.
—
29
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