3. Threading the machine head
WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the fol-
lowing work after turning the power off and ascertaining that the motor is at rest. If threading is wrong,
stitch skipping, thread breakage, needle breakage or irregular stitches will be caused. So, be careful.
(1) Standard threading
Thread the machne head accordng to the followng threadng llustratons.
1
3
1
A
Broken lines A when stretcher thread is used
When using more stretchable
thread
2
4
B
When covering thread is excessively
loosened = B
When covering thread is excessively
loosened even after passing B = C
3
When using less stretchable
thread
– 11 –
2
C
When covering thread is
excessively tense = D
Broken line E when using more stretchable thread
D
4
E