Counter Knife - JUKI DLN-6390 Instruction Manual

Wiring diagram of pneumatic and electric components
SC-921
CN56 CN36
SC-921
CN56 CN36

3. Counter knife

WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the
following work after turning the power off and ascertaining that the motor is at rest.
a
C
b
4.5 mm
1
a Moving knife
b Center of needIe
CN37 CN33
Z
Y
Black
Gray
When checking receding amount of moving knife and cam timing
CN37 CN33
Y
Z
Black
Gray
X
1
B
A
– 38 –
Normal wiring
DLN-6390-7
Sewing machine main unit
DLN-6390-7
Sewing machine main unit
When the knife sharpness has deteriorated, resharpen
counter knife 1 as illustrated in C , and properly reinstall it.
1) If the mounting position of the counter knife is moved
in direction A from the standard mounting position, the
thread length after thread trimming will be increased
accordingly.
2) If the mounting position is moved in direction B , the
thread length will be decreased accordingly.
When re-sharpening the counter knife, be
careful of handling.
CN36 CN37
Z
CN36 CN37
Y