Height Adjustment Of Feed Dog; Adjustment Of Feed Lift Shaft Cam And Lower Feed Cam - SunStar KM-1172BLX User Manual

8.4) Height adjustment of feed dog

Set the stitch count at the minimum and place the feed
dog① at the maximum height. The normal condition is
that the feed dog① is located 1mm above the needle
plate②. If it is not in the normal condition, take actions
as below to adjust the feed dog height.
1) Turn the upper shaft pulley of the sewing machine to
place the feed dog at the highest position.
2) Lean the sewing machine backward.
3) Slightly loosen the fixing screw for the feed lift shaft
crank③.
4) Turn the feed lift shaft crank④ to adjust the feed dog
height to be 1mm.
5) When adjustment is completed, tightly fasten the
fixing screw③.
When the feed lift shaft crank ④ is turned, make sure that it does not move toward the shaft.
Caution
8.5) Adjustment of feed lift shaft cam and
lower feed cam
1) After setting up the stitches at the minimum, put the
needle bar at the lowest position.
2) Adjust the direction of the second screw② on the
feed lifting cam① to the vertical upward and tighten
it firmly.
3) Lift the needle bar to the highest point.
4) Adjust the direction of the first screw④ on the lower
feed cam⑤ to the vertical upward and tighten it
firmly.
5) When the adjustment is made as above, the tips of
the needle③ and the feed dog⑥ contact the face of
the needle plate⑦.
Otherwise, make adjustment as above following the
above methods.
6) After setting up, tighten all the screws firmly.
①
④
②
①
1mm
③
[Fig. 8-6]
④
⑤
②
①
⑥
③
⑦
[Fig. 8-7]
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