SunStar KM-640BL, User Manual

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12) Adjusting feed dog height and inclination
Adjust the height of the feed dog
③
by loosening the clamp screw
②
of the leverage crank(front) and moving the leverage
crank(front)
①
.
The adequate height from the upper side of needle plate to the end of feed dog is from 1.0mm to 1.2mm when the feed
dog is in the highest point with the stitch is put to the maximum level.
To adjust the inclination of the feed dog, loosen the fixing screw of feed dog inclination adjustment crank
⑥
in the
horizontal pushing crank
④
first. Later, adjust it by rotating until 90 degree the feed dog inclination adjustment shaft
⑤
.
When you turn the shaft
⑤
clockwise, the front of feed dog goes up while the rear part of the feed dog is up with counter
clockwise direction.
Check the height of feed dog
③
because the height of it changes after the adjustment of feed dog
③
.
Highest position of feed dog
[Figure 30]
13) Adjusting auxiliary presser foot and upper feed presser foot
Normally, the auxiliary presser foot and the upper feed presser foot work vertically with a same height difference.
In accordance with the material type, there are some cases in which run the auxiliary presser foot
①
and the upper feed
presser foot ② at the same pace, or sometimes, at different paces. In these cases, please adjust the height as follows:
■
In case of running vertically the auxiliary presser foot and the upper feed presser foot at the same height
a) The vertical running range of the auxiliary presser foot
①
and the upper feed presser foot
②
is from 2 to 5.5 mm.
b) The vertical running amounts of the auxiliary presser foot
①
and the upper feed presser foot
②
are easily adjustable
from the climb device dial attached to the front side of the machine.
c) The dial
④
attached to the upper cover is a dial which controls the running amount dial
③
. Only when the numbers of
③
and
④
are identical, the auxiliary presser foot and the upper feed presser foot can be run at the same height.
ex) When the running amount of the two presser feet are adjusted to 4mm
ex) First, adjust the number of the dial attached to the upper cover to 4, and make the number the dial at front side of
the machine 4. When you adjust the number from lower one to a higher, you should adjust the dial
④ first. In the
reverse case, the adjustment of the dial
③
should be done first.
[Figure 31]
clockwise
front
back
front
front
back
back
counter clockwise