5-03
5. ADJUSTMENTS
LZ2-B850,B851
r
e
w
q
w
e
r
Lower the front
Standard
Raise the front
(A)
(B)
q
Y
Y
e
w
(Front)
0594M
0596M
0595M
S48143
S48143
r
q
1004S
1005S
X
X
5-4. Adjusting the feed dog angle
The standard angle for the feed dog
q
is for the top of the
needle plate and the top of the feed dog
q
to be parallel
when the feed dog
q
is at its maximum height above the
needle plate.(with the
⁄
mark on the feed bracket shaft
w
aligned with the mark on the feed rocker bracket arm
e
).
1. Turn the machine pulley to move the feed dog
q
to its
highest position above the needle plate.
2. Tilt back the machine head.
3. Loosen the two set screws
r
.
4. Turn the feed bracket shaft
w
in the direction of the
arrow within a range of 90
°
with respect to the stan-
dard position.
• Tilting the feed dog
q
so that the front is lowered
tends to prevent puckering(gathering). (Figure A)
• Tilting the feed dog
q
so that the front is raised tends
to prevent material from slipping (uneven material
feeding). (Figure B)
5. Securely tighten the set screws
r
.
*
When the angle of the feed dog
q
is adjusted, the
height and forward/back position of the feed dog
q
will
also change and will need to be readjusted.
5-5. Adjusting the forward/back, right/left position of the feed dog
Adjust the clearances X at the left and right sides of the
feed dog
q
and the needle plate so that they are as close
as possible to being equal.
Adjust the clearances Y at the front and rear ends of the
feed dog
q
and the needle plate so that they are as close
as possible to being equal when the machine pulley is
turned so that the needle plate is at is furthest position
forward and furthest position back.
<Adjusting the left and right clearances X>
Loosen the two screws
w
of the feed dog
q
and adjust.
If adjustment is not possible, carry out the following ad-
justment.
<Adjusting the front and back clearances Y and the left and
right clearances X>
Loosen the two screws
r
of the level feed arm
e
and
adjust.
