JUKI MF-7500 Series, Инструкция по эксплуатации

Страница: 27 / 31

– 25 – – 25 – ‒ 25 ‒
18. Adjustment value of balloon
① Feed timing
When performing balloon stitch, carry out the adjustment
referring to the adjustment values described below.
Feed driving eccentric cam: Standard timing as factory-adjusted at the time of shipment.
Feed rocking eccentric cam: Standard timing as factory-adjusted at the time of shipment.
[Adjusting the looper thread cam]
Adjust so that thread comes off from the highest point of looper thread cam ❷ when the top end of left needle ❸ is
aligned with the underside of looper ❹ while the needles are coming down. Then, tighten setscrews ❶ .
② Looper thread cam timing: Looper thread comes off the looper thread cam in the middle between
the lower end face and upper end face of the looper.
[2-needle balloon stitch without top covering]
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.
Thread
❶
❷
❸
❹