22
B. Adjusting slope
a ) First loosen the feed dog base clamp screw
of the vertical roller crank
and move the feed dog base
up and down
with a driver to adjust the slope. Turning the base
clockwise makes the upper side of the feed dog up. Turning it
counterclockwise makes the upper part down. (See figure 32)
b) As can be seen in picture
of figure 32, it is general to make the feed dog base covered sign set in parallel to the vertical
roller crank. But to prevent parka ring, adjust the slope to higher direction as in picture
of figure32. To reduce the delay of
cloth, adjust the slope to lower direction as in picture
of figure 32.
c) Check the height of feed dog
because the height of it changes after the adjustment of feed dog .
[Figure 32]
Feed dog
Front is up
Adjusted
Front is down
Front
Back
13) Adjusting the trimming device
A. Adjusting the trimmer driving part
The part of trimmer cam is seen in figure 33.
[Figure 33]
Fixed knife
Thread cover
Trimming solenoid
Trimming solenoid base
Movable
knife
Trimming lever
Trimming final
Trimming
cam
Slide arm
Clutch
lever
Stopper Stopper lever
Thread release cable
[Note]
The trimming cam attached to the lower part runs the machine.
Therefore in adjustment time, if the machine is run with trimming solenoid working, movable knife and needle conflict. So
in that case, run the machine at the fixed trimming space (from the lower- upper side of needle bar)
