Adjusting The Height Of The Feed Dog; Installing Position Of The Spreader - JUKI MF-7900 Instruction Manual

10. adjusting the height of the feed dog

adjusting the height of the feed dog
WarNING :
to protect against possible personal injury due to abrupt start of the machine, be sure to start the fol-
lowing work after turning the power off and ascertaining that the motor is at rest.
3
5
2

11. Installing position of the spreader

WarNING :
to protect against possible personal injury due to abrupt start of the machine, be sure to start the fol-
lowing work after turning the power off and ascertaining that the motor is at rest.
3
2
1
7.8 to 8.2 mm
0.1 to 0.3 mm
A
B
1
4.5 to 5.5 mm
7
6
4
1
4
3
1
17 to 18 mm
– 2 –
Adjust the heght from the top surface of throat plate
to the rear end of man feed dog
1
the feed dog comes to ts hghest poston and tghten
setscrew to fix the feed dog.
3
For the heght of dfferental feed dog
heght of front end of man feed dog
5
rear end of dfferental feed dog
6
screw to fix the differential feed dog.
7
It s the standard that throat plate
feed dog when the feed dog s n ts hghest poston.
[adjusting the height]
The heght of spreader 1 s 7.8 to 8.2 mm from the
top surface of throat plate 2 to the bottom surface of
the spreader.
Adjust the heght wth clamp screw 3 and fix the
spreader.
[adjusting the longitudinal position]
Adjust so that the clearance between the spreader
and left-hand needle s 0. to 0.3 mm when spread-
er 1 travels from the extreme left poston to the
rght and secton A comes to the front of left-hand
needle. Then fix the spreader with clamp screw 3 .
[adjusting the lateral position]
Adjust so that the dstance from the center of left-
hand needle to secton B of the spreader 1 s 4.5
to 5.5 mm when the spreader 1 s n the extreme left
position. Then fix the spreader with clamp screw 4 .
to  mm when
2
, adjust the
4
to that of
2
, and tghten set-
4
is flush with the
1