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b) Adjusting movable knife movement
ⓐ Operate the machine, with solenoid at work, and
movable knife will be rotated by trimming cam. It is
standard that cutting edge of movable knife moves
about 1 ~ 1.5mm from the edge of fixed knife, when
movable knife moves to the max.
ⓑ Trimming lever can be used for adjustment.
(See the Figure 41)
D. Adjusting knife tension
ⓐ As in the figure 40, it is standard that movable knife①
and fixed knife② meet at the beginning.
ⓑ In case of poor trimming caused by using thick thread,
increase tension of movable knife.
ⓒ To adjust tension of movable knife, as in the figure 42,
loosen tension control screw of movable knife③ and
then adjust with control screw④. After adjustment, make
sure to fasten tension control screw.
E. Changing movable knife
Turn pulley by hand to put needle at the highest place. And
then remove needle plate and loosen the 2 fixed screws of
movable knife as in the figure 43 to take off the knife. To
assemble replacement parts, follow the reverse order of
disassembling.
32
1~1.5mm
①
②
③
④
①
[ Fig. 41 ]
[ Fig. 42 ]
②
[ Fig. 43 ]
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