Positioning The Looper Thread Take-Up - JUKI MH-481 Manual De Instrucciones

23. POSITIONING THE LOOPER THREAD TAKE-UP

WARNING :
To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be
sure that the motor has totally stopped rotating in prior.
2
C
1
A
B
3
4
Loosen setscrew 4 . Adjust the position of looper
thread cam 1 so that wire 3 is visible through guide
hole B when third marker line A (third from the top)
of the needle bar 2 aligns with the bottom end face of
the needle bar lower bushing.
After the adjustment, verify the following.
1. When the looper thread moves off tip C of the
looper thread cam, the needle tip fully enters the
looper thread triangle.
2. In the case puckering is particularly concerned, the
bottom face of the wire aligns with the bottom end
of guide hole B slightly earlier than the normal
timing.
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