SunStar KM-560 - Timing and Stroke Adjustments; Timing of Auxiliary Presser Foot, Upper Feed Foot, and Needle; Upper Feed Presser Foot Stroke Adjustment

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14) Adjusting timing of the auxiliary presser foot, the upper feed foot and the needle
When the needle ① goes down, the upper feed presser foot ③ should adhere to the feed dog ② before the needle edge
adheres to the upper part of the feed dog ②. The upper feed presser foot ③ should continue to adhere to the feed dog ② even
when the needle ① edge, going up, and the upper part of the feed dog ② are detached with each other. If not, loosen the two
up-and-down cam ⑤ clamp screws ④ to adjust right and left the fixed position of the up-and-down cam ⑤ of the presser
foot. (See Figure 47)
[Figure 47]
①
③
②
④
When the needle goes down When the needle goes up
⑤
15) Adjusting stroke of upper feed presser foot
⑴ As in Figure 48, the machine is adjusted to have the same amount of upper feed presser foot stroke ④ as the feed dog
stroke ⑤. (The baseline ⑥ of the shake crank ③ is aligned with the baseline ⑦ of the collar.)
⑵ Take the followings steps, if the two base lines are not aligned or if it is necessary to adjust the stroke ④ of the upper feed
presser foot to increase or decrease.
󳡒 Loosen nut ①.
󳡓 Move nut ① to the back ② of the horizontal roller to increase the stroke ④ of the upper feed presser foot. Move nut
① to the front ③ of the shake crank to decrease it.
󳡔 After adjustment, be sure to fasten nut ①.
[Figure 48]
⑦
③
②
①
④
⑤
Lower feed
Upper feed
⑥