Adjustment Value Of Balloon - JUKI MF-7923 Instruction Manual

17. adjustment value of balloon

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.
[2-needle balloon stitch without top covering]
1 Feed timing
Feed drvng eccentrc cam: Retardng the tmng.
Feed rockng eccentrc cam: Retardng the tmng.
Refer to "^-�6.�d�usting the feed locus" p.24.
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.
thread
2
3
4
1
When performng balloon sttch, carry out the adjust-
ment referrng to the adjustment values descrbed
below.
[adjusting the looper thread cam]
Adjust so that the looper thread comes off the looper
thread cam when the top end of the lowerng left nee-
dle 3 comes to the mddle between the lower end face
and upper end face of the looper when the lowerng left
needle. Then, fix the looper thread cam with setscrews
1 .
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