To adjust the position of the needle and shuttle
1. Loosen screw ⑤.
2. Loosen screw ⑥,and adjust so that marker dot Ⅲ
engraved on the eccentric cam of the vertical rod is
aligned with marker line Ⅳ engraved on the main shaft
Then, tighten screw ⑥.
3. Turn the handwheel toward you, and check the lifting
amount of the needle bar.
4. After the adjustment, securely tighten screws ⑤ and
⑥.
◆ The height of the needle bar
The correct height is that the distance from the blade point
of the shuttle to the upper end of the needle eyelet is 2.5 m
when the blade point of the shuttle is aligned with the cente
of the needle.
To adjust the height of the needle bar
1. Set the feed pitch to 0 mm.
2. Turn the handwheel and stop turning it when the blade
point of the shuttle is aligned with the center of needle.
3. Loosen screws ⑦.
4. Adjust the height by moving needle bar ⑧ up and down.
5. After adjustment has been completed, firmly tighten screw
⑦.
◆ The needle-to-shuttle clearance
The clearance between the recess in the needle and the
blade point of the shuttle has already been adjusted to 0.25
～0.35 mm.
Point of the shuttle has already been adjusted to 0.35 mm.
Adjust the clearance between the needle and the shuttle by
replacing the shuttle race back.
( The shuttle race back comes in six different thickness in
addition to the standard thickness. )
To repace the shuttle race back
1. Remove two screws ⑨ in the shuttle race, remove shuttl
race ⑩, and remove shuttle ⑪.
2. Turn the handwheel until shuttle driver ⑬ is brought to th
position where shuttle race back ⑫ comes off.
Then replace the shuttle race back.
⑥ Ⅲ Ⅳ
2.5mm
⑧
⑦
0.25～0.35mm
⑩
⑨
⑪
⑬
⑫
⑤
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Summary of Contents for CS-471
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