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#. MAINTENANCE OF SAWING MACHINE
1. MAINTENANCE
1-1. Adjusting the height of the needle bar (Changing the length of the needle)
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of
the sewing machine.
2
* Turn ON the power once, and turn OFF the power again after making the intermediate presser
in the lowered state.
1) Bring needle bar 1 down to the lowest position of its stroke. Loosen needle bar connection screw 2
and adjust so that the upper marker line 3 engraved on the needle bar aligns with the bottom end of
the needle bar bushing lower 4 .
2) As illustrated in the above figure, change the adjusting position in accordance with the needle count.
After the adjustment, turn the pulley to check for an extra load.
1-2. Adjusting the needle-to-shuttle relation
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of
the sewing machine.
Relation between the needle and the marker
lines on the needle bar
4 : Marker line for DP x 5
3
5 : Marker line for DP x
4
5
6
6 : Marker line for DP x
1
3
3
2
2
W h e n D P x 1 7
When a
needle (of which
DP x 5 needle
needle count is
is used.
lower than #22)
is used.
4
1
5
7
needle
17 needle (with needle
count higher than #22)
17 needle (with needle
count lower than #22)
3
2
W h e n D P x 1 7
needle (of which
needle count is
higher than #22)
is used.
3
5 : Marker line for DP x 5
6
6 : Market line for DP x 17
(with needle count higher than #22)
1
7 : Marker line for DP x 17
(with needle count lower than #22)
* Turn ON the power once, and turn OFF the
power again after making the intermediate
presser in the lowered state.
1) Turn handwheel by hand to ascend the needle
bar 1 .
Adjust so that lower marker line 2 on the as-
cending needle bar aligns with the bottom end
of the needle bar bushing lower.
– 121 –
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