5
5555----6 Adjusting the movable knife up and down
6 Adjusting the movable knife up and down
6 Adjusting the movable knife up and down
6 Adjusting the movable knife up and down
There should be a clearance of 0.2mm between movable knife and the top surface of
looper.
The adjustment is made by loosening nut X and moving stationary knife holder (W).
After the above adjustment, make sure the movable and stationary knife holders move
smoothly. Do not adjust this clearance by changing the height of the looper.
Otherwise it
may cause skip
stitching.
5555----7 Relationship b
7 Relationship b
7 Relationship b
7 Relationship between the movable knife, needle thread and looper thread
etween the movable knife, needle thread and looper thread
etween the movable knife, needle thread and looper thread
etween the movable knife, needle thread and looper thread
After all the adjustments are made, check the following
before threading to start the machine.
■
Movable knife A should enter needle thread loops B.
Cutting edge C for the looper thread should pass looper
thread D.
■
When the movable knife is returning home, the needle
threads and looper thread are pulled to the right by
cutting edges E and F and cut by the stationary knife.
5555----8 Looper thread clamp spring pressure
8 Looper thread clamp spring pressure
8 Looper thread clamp spring pressure
8 Looper thread clamp spring pressure
The looper thread clamp spring holds the looper thread
after it is cut. To adjust the pressure of thread clamp
spring H, turn adjusting screw G. To increase the
pressure, turn it clockwise. To decrease the pressure,
turn it counterclockwise. The machine is supplied with a
spun thread (#60). The pressure of the thread clamp
spring is factory-set at approximately 90g.
Adjust the pressure for other threads.
