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7)
Suction is stopped by pressing
Basically, adjustment of the thread tension controlled by the thread tension controller is not required.
4-5-2. How to fit a bobbin in the bobbin case
This device uses two bobbin cases each of which is fitted with a bobbin.
❶
When the thread is put in thread path tube ❽ ,
it is sucked. Put the thread in the tube, while
pulling the thread from the bobbin thread
cone, until the length of thread coming out of
the tip of nozzle becomes approximately
13 cm. If the thread stops halfway, pull it back
slightly several times.
At this time, the bobbin winder nozzle is at
its advanced position. In this state, adjust the
length of thread while observing the scale on
label as a guide.
Fit a bobbin in the bobbin case so that clutch
holes ❶ (at two locations) of bobbin are brought
to the open side.
– 21 –
C again.
Before fitting a bobbin in the bobbin
case, wipe the bobbin case to remove
oil and dust. In particular, wipe the
shaft section of bobbin case to re-
move oil and dust. In addition, blow
out, with an air gun, oil and dust gath-
ering under the bobbin idling preven-
tion spring in the bobbin case.
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