Center Knife (Upper Knife) - Brother BAS-6150 Instruction Manual

4. Center knife (Upper knife)

q
w
e
r
1. Turn off the power switch after the air cock
2. Let middle knife drive connecting rod q go
1517S
3. Loosen flat head screw e and replace
r
1518S
4. Rotate the upper shaft pulley and confirm
5mm
t
1519S
BAS-6150
is closed and air pressure is confirmed to
be [0].
up.
(Note) Be careful of descent of upper knife w.
upper knife r with new one.
(Note) Press the upper knife to the deepest position
for attachment.
the upper knife r goes up 5 mm high from
needle plate t when the upper knife
reaches to the highest point.
Chapter 6 Knife replacement
73