98
2
1
3
1
2
3
23
3), 4)
2)
θ
3
Standard position
1.4 mm
θ
3
3
θ
1)
1.2mm
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.
8-5. Height and inclination of the feed dog
Throat plate spacer (part No. : 22503908)
Feed bar spacer (part No. : 10025906)
To secure a space
(1) LZ-2290A*S
1) To adjust the height of the feed dog, loosen the
screw 1 and turn the feed driving link pin 2 using
a screwdriver.
2) The standard height of the feed dog is 1.2 mm.
3) To adjust the inclination of the feed dog, loosen the
two screws 3 and turn the eccentric shaft inserting
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 No. : 10025906) under
the feed mechanism and a throat plate spacer (part
No. : 22503908) under the throat plate so as to
secure a space between the counter knife and the
underside of the feed dog.
The standard inclination of the feed dog is obtained
by adjusting the feed dog so that it becomes horizontal
when it rises above the top surface of the throat plate.
(2) LZ2290A*U
1) To adjust the height and inclination of the feed dog,
loosen the screws 1 and turn the feed driving link
pins 2 and 3 using a screwdriver as shown in the figure.
2) The standard inclination of the feed dog is obtained
by adjusting so that the engraved dot of feed driving
link pin 2 faces at 9 o’clock and the engraved dot
of feed driving link pin 3 faces at 9 o’clock.
3) The standard height of the feed dog is 1.4 mm.
4) Mainly adjust feed driving link pin 3 to adjust the
uneven material feeding. The uneven material
feeding can be corrected by adjusting the inclining
angle
θ
of the feed dog.
5) A spacer is inserted between the throat plate and
the feed dog of the sewing machine with thread
trimmer only.
Counter knife
Feed dog
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