17
⑶
Adjusting the tension of thread take up lever spring
Adjusting the thread take up stroke
As in figure 27, loosen the stopper clamp screw
⑥
, and turn the thread take up lever
’
s spring stopper
④
clockwise to
make the stroke smaller and counter clockwise to make it bigger.
※
The thread take up stroke is normally 10~14 mm.
Adjusting the thread take up tension
As in figure 28, loosen the screw
⑥
of the thread tension control assembly, and insert the driver into the groove of the
thread tension control assembly
⑦
. Turn clockwise to make the spring
⑤
tension stronger and counter clockwise to
make it weaker. (See Figure 28)
Adjusting the timing of the thread take up spring tension
As in Figure 29, loosen the stopper screw
③
, and turn clockwise the guide plate
⑧
for the thread take up spring to
make the timing of the spring
⑤
faster and counter clockwise to make it slower.
※
The timing of the thread take up spring tension is normal, when the guide plate is located in the middle as can be
seen in Figure 29.
Adjusting the auxiliary thread tension control assembly
(for automatic trimming type)
As in Figure 30, when the auxiliary thread tension
adjustment nut
⑨
is turned clockwise, the length of
the thread after trimming is short. The other way
makes the thread long.
※
The appropriate length of the upper thread on the
needle after trimming is 35~45 mm.
※
This can also be done by using the remaining
upper thread length adjustment volume of the
control box.
[Figure 27]
Smaller
Bigger
10~14mm
[Figure 28]
[Figure 29]
⑦
⑤
⑥
⑤
③
⑧
Strong
Weak
[Figure 30]
Summary of Contents for KM-560
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