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⑶ Adjusting movable knife and fixed knife
Adjusting the position of movable knife-edge and hook stopper
① When a movable knife ① passes the front side of the hook stopper ②, adjust the distance ④ to be within 0.05~0.2
mm range like part ③. The upper surface of the movable knife-edge ⑥ should be set up 0.2mm below the upper
side of hook stopper ⑤. (※Given that the fixed knife is pressing down the movable knife.)
② Clearance adjustment of the movable knife edge and hook stopper front side
※ Loosen the needle plate
※ Place the hook stopper in the hanging position to the needle plate
※ Holding the hook with the hand, manually operate trimming movement so that the movable knife-edge is
matches the stopper front side ③.
※ Loosen the fixing screw ⑦ of the movable knife shaft eccentric bushing.
※ In the lower side hole ⑨ of the eccentric bushing ⑧, stick in a thin driver or adequate pin ⑩ and turn right and
left. This will make the position of the movable knife shaft ⑪ change, hence changing the distance ④.
※ When the clearance adjustment is finished, tightly fasten the fixing screw ⑦ of the bushing.
③ The adjustment of crossing height ⑫ between the hook stopper upper side ⑤ and movable knife edge upper side
⑥ is possible to certain degree by adjusting the movable knife base washer ⑦ or by changing the position of
movable knife shaft collar ⑧, as can be seen in Figure 55.
[Figure 54]
①
②
③
0.05~0.2
④
⑧
⑪
⑦⑨ ⑧
⑩
⑥
⑫ 0.2
⑤
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