24
HOW TO REPAIR THE MACHINE
[ Fig. 33 ]
When the needle bar os at its lowest position, unfasten the
needle bar holder screw ①. Adjust the desired height by
making the specified upper carving line fit in with the needle
bar bushing. Then, tigh tenthe needle bar holder screw back
in firmly.
1) Adjusting the Height of the Needle Bar
[ Fig. 34 ]
A. Have the lower carving line for the needle that is applied
when the needle bar goes up fit in with the lower side of
the needle bar bushing as shown in the picture.
2) Adjusting the Needle and the Shuttle
Needle Bar
Lower Bushing
DP×5
DP×17
B. After unfastening the shuttle drive screw ①, open the inner hook pressure bar ② left to right and remove the shuttle
race ring ③ from the (large) shuttle ④.
C. Make the shuttle hook point accord with the center of the needle. And make the needle and the front face of the
shuttle drive connect each other to prevent the needle from curving. Then, tighten the drive screw ① firmly.
D. After unfastening the (large) shuttle scerw ⑤, turn the large hook adjustment shaft ⑥ to the left to right and adjust
the (large) shuttle ④ so that the needle and the shuttle hook point is 0.05∼0.1mm apart from each other.
E. After adjusting the (large) shuttle ④ in place, adjust the rotary direction of the (large) shuttle ④ so the needle and
the (large) shuttle ④ is 7.5mm apart from each other. Then, tighten the (large) shuttle screw ①.
[ Fig. 35 ]
DP×17
①
DP×5
②
7.5mm
0.05∼0.1mm
0mm
④
①
⑤
⑥
③
②
The machine is set to be the best condition at the factory. Do not make any discrete adjustments
on the machine and replace genuine parts approved by the company only.
Caution
For safety, make sure all the screws are tightened firmly after adjusting the (large) shuttle.
Caution
66
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