30
WARNING :
The confirmation of cloth open amount can be performed by actually cutting cloth in the manual
mode. However, the cloth cutting knife works. So, be careful.
(7) Adjusting the presser opening amount
■
Adjusting procedure
Loosen setscrew
and turn adjustment screw
to
adjust the amount.
The position where the presser plate closes will
change according to the adjustment.
Turning the adjustment screw
clockwise
decreases the opening amount and turning it
counterclockwise increases the opening amount.
The position of the presser (A in the figure
below) at the time of sewing (in the state that the
cloth open is opened) can be adjusted and the
presser can be approached to the throat plate.
(Refer to the Engineer’s Manual.)
＊
A
t this time, there is a case where an
additional processing of support plate
is
necessary to prevent the interference of the
cloth cutting knife with support plate
.
■
Checking the cloth open amount at
the time of adjustment
1) Turn ON the power and press the [READY ] key
to light up the sewing LED.
2) Press [KNIFE ] key to make the LED go out so
that the cloth cutting knife is not actuated.
3) Press the presser switch, press [FORWARD ]
key and the cloth open mechanism opens. The
feed base travels to the sewing start position and
stops there.
At this time, measure position “A” of the
presser plate with vernier calipers or the like.
4) Press [RESET ] key, and the presser goes up,
then the cloth open mechanism closes and returns
to its origin.
At this time, measure position “B” of the
presser plate with vernier calipers or the like.
B
−
(minus) A, (difference between A and B)
= cloth open amount
The cloth open amount can be adjusted within
the range of 0 to 2 mm. Normally, however, the
amount of 0.5 to 0.8 mm is enough.
A
B
A
B
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