29
8-5. Adjusting needle bar height
·
When needle bar
①
is placed at the lowest position, align carved
line
ⓐ
of needle bar
①
with lower part of needle bar lower
bushing
②
. (Be cautious of DA needle and DB needle position)
1. Turn pulley to put needle bar
①
at the lowest position.
2. Detach rubber cover
③
on side-board.
3. Loosen clamp screw
④
lightly to adjust needle bar
①
.
4. Fasten clamp screw
④
tightly.
5. Install rubber cover
③
.
8-6. Adjusting height and slope of feed dog
·
The maximum height of feed dog
①
from the upper surface of
needle plate is 0.8mm(for KM-2300
A and
Gtype) and
1mm(for KM-2300
B and
H type)
1. Turn pulley to stop feed dog at the highest position.
2. Bend the machine backward.
3. Loosen fixing screw
②
and fixing screw
④
lightly.
4. Adjust feed dog height and slope by turning lifter crank
eccentric shaft
①
and eccentric shaft
③
of feed dog bed crank.
5. Refer to the right side figure to see movement direction of
feed dog bed
⑥
according to rotation direction of each
eccentric shaft.
6. After finishing adjustment, fasten fixing screws
②
and
④
by
pushing eccentric shafts
①
and
③
to the direction of shaft.
[ Figure 45 ]
[ Caution ]
1. When feed dog slope is adjusted only with one eccentric shaft, height of feed dog will change. Therefore make sure to
adjust two eccentric shaft.
2. Moving position of feed dog may change according to eccentric shaft adjusting position. In this case, adjust moving position
of feed dog after loosening fixing screw
⑤
of feed dog bed crank
⑦
.
①
③
④
⑦
⑤
⑥
②
[ Figure 44 ]
②
②
①
①
ⓐ
ⓐ
DB
×
1
DA
×
1
DB
×
1
Heavy Materials
①
④
③
Содержание KM-2300
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