Adjusting Feed Dog Height And Inclination; Adjusting Auxiliary Presser Foot And Upper Feed Presser Foot - SunStar KM-640UBL-7 User Manual

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12) Adjusting feed dog height and inclination

A. Adjust the height of the feed dog③ by loosening the clamp screw② 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.
B. To adjust the inclination of the feed dog, loosen the fixing screw of feed dog inclination adjustment crank⑥ in the
horizontal pushing crank④ first. Later, adjust it by rotating until 90 degree the feed dog inclination adjustment shaft⑤.
When you turn the shaft⑤ clockwise, the front of feed dog goes up while the rear part of the feed dog is up with counter
clockwise direction.
C. Check the height of feed dog③ because the height of it changes after the adjustment of feed dog③.

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 foot① and the upper feed
presser foot② 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 foot① and the upper feed presser foot② is from 2 to 5.5 mm.
b) The vertical running amounts of the auxiliary presser foot① and the upper feed presser foot② are easily adjustable
from the climb device dial attached to the front side of the machine.
c) The dial④ attached to the upper cover is a dial which controls the running amount dial③. 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 dial④ first. In the
reverse case, the adjustment of the dial③ should be done first.
20
back
front
clockwise
back
front
back
front
counter clockwise
[Figure 30]
[Figure 31]

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Km-640bl-7Km-640ublKm-640bl

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