Brother LK3-B448E Manual De Usuario
51
10. Adjustment
LK3-B448E MARK
II
/BA-16
4. Gently tilt back the machine head, and then place the
V-belt
u
remove the V grooves on the machine head
pulley
i
and the motor pulley
o
.
NOTE:
After tilting back the machine head, do not push
the face plate side or the pulley side from above.
the face plate side or the pulley side from above.
5. Gently return the machine head to its original position
replace V-belt.
* Be careful not to clamp the cords at this time.
* Be careful not to clamp the cords at this time.
6. Adjust the belt tension by moving the tension pulley
assembly to the right and left so that there is 9-10 mm
of deflection in the V-belt
of deflection in the V-belt
q
when it is gently pushed
in the middle with a force of approximately 10 N. After
adjusting, tighten the bolt A to secure the left pulley
assembly.
adjusting, tighten the bolt A to secure the left pulley
assembly.
7. Move the right tension pulley so that there is a gap of
about 1 mm between it and the V-belt
q
, and then
tighten the bolt B to secure the rigth pulley assem-
bly.
bly.
8. After adjustment, install the belt cover and the motor
cover.
10-17. Replacement the V-belt
r
q
e
w
y
t
i
u
o
e
belt
Approx. 1
mm
Approx. 9 - 10 mm
10N
10N
A
B
1. Then remove the belt cover.
(Refer to “Tilting back the machine head” on page 35).
2. Remove the motor back cover
q
with the screws
w
and the flat washers
e
.
3. Remove the wood screw
t
and washers
y
securing
the motor cover
r
, and remove the table.