−
31
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Adjustment Procedures
Results of Improper Adjustment
1) Remove the upper cover, loosen setscrew
2
in upper knife
driving arm
1
, and turn upper knife shaft
3
to adjust the position
from the top surface of the throat plate to 34 mm.
(Caution) Be sure to fully tighten the setscrew since upper
knife shaft
3
is subjected to high load.
1) Lower knife
1
Adjust the vertical position of the lower knife by screw
1
so
that the blade top aligns with the top surface of the throat plate.
2
Tighten screw
2
after bringing the upper knife to its lowest
position of its stroke.
2) Upper knife
1
Adjust the position of the upper knife by screw
4
so that the
engagement with the lower knife is 0.5 to 1 mm when the upper
knife is in the lowest position of its stroke.
(Caution) Adjust the lateral position of the lower knife by screw
2
. Adjust the lateral position of the upper knife by screw
3
. After performing adjustment, be sure to fix the knife.
Otherwise, the durability of the knife will be affected.
3) Overedging width
1
Adjust the overedging width in the following way :
Laterally position the upper knife before loosening screw
2
.
Tighten screw
2
when the upper knife has settled by itself
under the pressure applied by the spring. Repeat this
adjustment procedure to obtain desired overedging width.
™
Improperly positioned upper
knife arm shaft will come in
contact with the frame.
If it is moved with the position of
the upper knife unchanged,
proper engagement of the
k n i v e s w i l l b e d i s t u r b e d ,
prohibiting sharp cutting of the
knives.
™
The lower knife, if positioned too
high, will catch materials or
cause no contact of the presser
foot with the throat plate top
surface.
™
If the lower knife is positioned
too low, the cutting width will be
changed or materials will be
caught by the lower knife.
™
The upper knife, if positioned too
high, will fail to cut materials.
™
Unsharp cutting or abnormal
wear on the knives will result
unless the lower knife is laterally
positioned and fixed at a position
where it has settled by itself
under the upper knife spring.
Summary of Contents for MO-6000S series
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