21
⑶
Adjusting the distance between the needle and the hook edge
Raise the needle from its lowest point so that the hook edge meets the needle center. As in Figure 40, when the lower part
of the needle meets the balance point of the hook
’
s needle guide plate
①
(adjust the needle guide form), adjust the
distance between the hook edge and the inner side of the needle groove to 0.05~0.1 mm. Loosen
①
,
②
and
③
in Figure
41 and move the hook base
④
to the left and right for adjustment. (After adjustment, fasten
①
,
②
and
③
firmly.)
[Figure 40]
[Figure 41]
0.05~0.1mm
Adhering part
Needle
①
②
③
④
①
Hook edge
①
Needle plate
1.2mm
④
⑤
③
②
10) Clearance adjustment between the upper side of hook stopper and the upper side
of needle board groove
Like in figure 42, the normal distance between the upper side of the hook stopper and the upper side of the needle plate
groove is 1.2 mm. This distance can be adjusted by using the up and down adjustment of the bushing
②
assembled under the
hook
①
. It can be adjusted by loosening
③
and
④
. After adjustment, they should be fastened firmly. When this is done,
make sure that the hook shaft gear
⑤
moves smoothly without moving up and down.
[Figure 42]
11) Clearance adjustment between hook
and opener
Loosen the opener clamp screw
③
and turn the opener
②
to
the right and left so that the distance between the hook
①
and the opener
②
is about 0.2mm as in Figure 43 when the
opener
②
is pulled to its max towards the arrowed direction.
[Figure 43]
①
②
0.2mm
③
Summary of Contents for KM-560
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