– 5 –
❸
❸
❷
Within 0.3 mm
❸
1. Fix the throat plate auxiliary
cover
❸
so that is higher than
the throat plate
❷
(within 0.3
mm). When it is lower than
the throat plate
❷
, needle
breakage or the like due to the
defective feed will be caused.
2. Confirm by putting a ruler or
the like that the throat plate
auxiliary cover
❸
is horizon
-
tally installed. If not, throat
plate auxiliary cover
❸
and
lower plate
❶
come in contact
partially with each other, and
abnormal worn-out will be
caused.
❶
3-4-1.
Attaching / removing the AW-3 device cover
It is necessary to remove the front cover
❶
in order to set up the bobbin thread or carry out mainte-
nance. Remove the cover
❶
as described below.
1) Loosen six setscrews
❷
on the right and left side faces of the AW-3 device.
2) Slightly shift the cover
❶
upward, then carefully draw it toward you.
Install the cover
❶
reversing the removal procedure.
Be sure to attach cover
❶
for the sake of safety when performing sewing.
WARNING :
In the case you use the AMS-221F
△△
3020RSW (provided with AW-3 device) model of sewing ma
-
chine, detach the cover and carry out preparation for the use of the AW-3 device.
The AW-3 device uses an optical sensor. In order to protect the AW-3 device against malfunction,
neither install the AW-3 device at any place that is exposed to direct sunlight such as a window side
nor orient it to such a direction that it is exposed to direct sunlight.
❷
❶
❷
3-4.
Preparation for the use of the AW-3 device
❷
