JUKI J-350QVP Instruction Manual page 23

・ Manual Stitch Mode
When you press the "start button" on the right handlebar, the
machine will sew at the sewing speed that has been set.
* Non-regulated mode. JSS does not function.
③ Trimming Thread
When you press this button, Upper and lower threads are
trimmed automatically.
④ Auto Thread Trimming
When the sewing machine is stopped, the automatic thread
trimmer is engaged trimming both upper and lower threads.
* Start sewing.
In a "stand-up" setup, you can stitch by moving the machine.
* If the material sags, the sewing machine will fail to form
stitches at regular intervals.
Set the material between the quilting frames so that it is
adequately tensed.
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