Timing Of The Thread Trimming Cam(Thread Trimmer Type Only); Installing/Removing The Knife Unit (Thread Trimmer Type Only); Stop Position Of The Needle After Thread Trimming (Needle Up Stop) - JUKI IP-100A Engineer's Manual

(25) Timing of the thread trimming cam(Thread trimmer type only)

(See the figure shown above.)
™ Press roller arm 6 until roller 4 fits in the groove in thread trimming cam 8. Now, lightly turn the
main shaft handwheel carefully in the reverse direction until it stops. At this time, the marker dot
engraved on the machine arm should be aligned with the red marker dot engraved on the handwheel.
Adjust the thread trimming cam longitudinally within the width of a dot.
Engraved marker dot on
machine arm

(26) Installing/removing the knife unit (Thread trimmer type only)

(27) Stop position of the needle after thread trimming (Needle UP stop)

™ The standard stop position of the needle (position at which the marker dot engraved on the machine
arm is aligned with the white marker dot engraved on the handwheel) is when the marker line
engraved on the thread take-up is aligned with the marker line engraved on the face plate (60˚).
™ Adjusting range is within one engraued marker dot in front and rear.
A:
B:
Standard Adjustment
Standard Adjustment
1
3
Knife unit
2
Standard Adjustment
B
1
2
A
Handwheel
Needle UP stop
Needle DOWN stop
Handwheel
Machine arm
5
38
− −
Red engraved marker
dot on handwheel
W i d t h o f
adjustment
4
Knife unit
6
(Advances)
Adjusting
Machine
range
arm
Handwheel
(Retards)