Height And Inclination Of The Feed Dog; Attaching/Removing The Hook - JUKI LZ-2280A Series Instruction Manual

4-8. Height and inclination of the feed dog

WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the
following work after turning the power off and ascertaining that the motor is at rest.
❷
❸
❹
1.1 mm
❹
B
Throat plate spacer (part No. : 22503908)
Feed bar spacer (part No. : 10025906)
To secure a space
Counter knife

4-9. Attaching/removing the hook

WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the
following work after turning the power off and ascertaining that the motor is at rest.
❸
❶
❷
The hook is exclusively designed to the LZ-2280A Series model of sewing machine.
When placing an order for the hook in case of replacement or the like, designate it with its part
number. Hook: 22525877
❶
❷
A
Feed dog
❹
A
B
– 16 –
(1) Height of the feed dog
1) To adjust the height of the feed dog, loosen the
screw ❶ and turn the feed driving link shaft ❷
using a screwdriver.
2) The standard height of the feed dog is 1.1 mm.
(Reference) Marker dot A on feed driving link
shaft ❷ and marker dot B on feed
bar shaft ❹ should respectively face
inward.
3) To adjust the inclination of the feed dog, loosen
the screw ❸ and turn the feed bar shaft ❹ insert-
ing a screwdriver through the adjustment hole in
the machine bed.
4) For the machine with a thread trimmer, there can
be no space between the counter knife and the
underside of the feed dog when adjusting the feed
mechanism (change in height and timing) or using
a commercially-available feed dog.
In this case, place a feed bar spacer (part number
: 10025906) under the feed mechanism and a
throat plate spacer (part number : 22503908)
under the throat plate so as to secure a space
between the counter knife and the underside of
the feed dog.
(2) Inclination of the feed dog
The standard inclination of the feed dog is ob-
tained by adjusting so that the feed dog becomes
level when the feed dog reaches its highest po-
sition.
When you replace the sewing hook, remove it in the
following procedures;
1) Turn the handwheel until the needle reaches to
its highest position.
2) Remove the needle, presser foot, throat plate,
feed dog and bobbin case from the machine.
Remove the setscrew ❶ and take out the bobbin
3)
case positioning finger ❷.
Loosen the two screws ❹ and remove the sewing
4)
hook ❸.
* Reverse the above procedures when inserting the
sewing hook.
At this time, make sure that top end A of the
bobbin case positioning finger is aligned with line
B as shown in the figure on the left. Never let A
protrude from line B.