swf embroidery machine is running but not sewing

It was always the timing or the plate adjustment that caused the problem. I've never seen a problem with gap on the lower end. Some of this was on juki tsc441 that I modded to stitch 1' thick leather.

I worked on industrial machines for 20 years before I got into embroidery.

While I see your point how do you account for heavy items that pull the hoops down? Barudan even suggests that you use clamps if the item is light to put weight down on the hoop so it doesn't flag. Hey Olsen, lots of techs think this is a tension fault when it's not really, its a Path of least resistance problem,put a hoop in the machine with fabric in it, then check the gap between the fabric and the needle plate, there should be barely daylight between them, if its touching then the problem occurs due to it been easier to pull thread from the cone than to pull the thread in from the bottom ,this causes excess thread in the system, which ends up lying on top of the garment in the form of loops.bend the hoop arms up to increase the gap.

Swf embroidery machine is running but not sewing