15
9) Adjusting the feed dog height
10) Adjusting the needle and hook timing
[ Figure 15 ]
②
Manually rotate the hand pulley to set the hook tip ①
aligned with the center of the needle ②, when the needle
rises 2.3mm above the lowest point.
Unfasten the screw ③ and adjust the hook to set a clearance
between the hook tip ① and the needle ② at 0.05~0.1mm.
Unfasten the screw ④ and move the needle bar ⑤ up and
down to adjust the needle bar height. Unfasten the screw ④
so that when the hook tip ① comes in alignment with the
center of the needle ②, the clearance between the upper
thread hole of the needle and the hook tip ① is between
0.5mm and 1.5mm. Move the needle bar ⑤ up and down to
control the needle bar height and tighten the screw ④.
As a standard, 1~1.2mm is the maximum height of the feed dog when the number of stitches is set at the highest and the feed
dog rises above the upper needle plate.
Unfasten the screw ① and move the holding crank ② up and down to adjust the feed dog height.
[ Figure 16 ]
①
①
②
②
2.3mm
③
(2) Adjusting the height of the needle bar
(1) Adjusting the lifting of the needle bar
[ Figure 17 ]
0.5~1.5mm
④
⑤
①
②
1~1.2mm
0.05~0.1mm
①
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