Height And Tilt Of The Feed Dog - JUKI DDL-9000B Instruction Manual

22. CUNTER KNIFE
[DDL-9000B-SS, -DS, -M △ ]
C
4 mm
1
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the sewing machine.
If the knife does not cut thread sharply, immediately re-sharpen counter knife 1 as illustrated in Fig. C and re-install it properly.
1) If the mounting position of the counter knife is moved in direction A from the standard mounting position, the thread length after thread trimming will be
increased accordingly.
2) If the mounting position is moved in direction B , the thread length will be decreased accordingly.
(Caution) When sharpening again the knife blade, extra special care must be taken on the handling of the knife.

23. HEIGHT AND TILT OF THE FEED DOG

a
3
A
4
A
B
B
7
5
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the sewing machine.
(1) Standard value of the height of the feed dog
Standard feed dog height, when it is lifted to the highest from the top surface of the throat plate, :
9000B- S and 9000B-MA : 0.8 mm
9000B-SH : 1.2 mm
Adjust the feed dog height in accordance with processes and materials.
(Caution) Adjust the directions of the engraved marker dot of feed bar driving shaft 1 and the engraved marker dot of feed bar rocker shaft 3 on
the right side (operator side).
(2) Adjusting the height and tilt of the feed dog
1) Loosen setscrew 2 in feed bar driving shaft 1 and setscrew 4 in feed bar rocker shaft 3 .
2) Height and tilt of the feed dog will change by turning both shafts 1 and 2 with a screwdriver.
3) For the relation between the rotating direction of each shaft and tilt of feed bar 6 , refer to the figure above.
* Standard delivery state : The engraved marker dot of feed bar rocker shaft 3 is adjusted to engraved marker lines 8 and 9 of the feed dog of each type
and the height of feed dog is adjusted with feed bar driving shaft 1 .
4) After the adjustment, securely tighten the setscrews. (Tighten setscrews 2 and 4 in the state that shafts 1 and 3 are pushed against the handwheel
side.)
(Caution)
1. If the tilt of the feed dog is adjusted with one shaft only, the height of the feed dog changes. Be sure to adjust it with both shafts.
2. Movement position of the feed dog may be shifted depending on the adjusting position of the shaft. At this time, loosen setscrew 5 in feed
rocker shaft arm 7 and adjust the movement position.
3. The feed dog may interfere with the thread trimmer unit due to the adjustment of height or tilt of the feed dog. So, be careful.
a
b
A
B
b
1
a
a
b
2
6
b
– 11 –
[DDL-9000B-SH]
a
b
1
6 mm
B
Feed dog at the time of delivery
Position of engraved marker
dot of feed bar rocker shaft
a Moving knife
b Center of needIe
1
A
23614506
B1613012I00
(- S)
(- S, -MA)
11403003,
D1613155W00
11062601
(-MA)
(-SH)
8 9
9000B- △ S,9000B-MA : 0.8mm
9000B-SH : 1.2mm