I guess that wel all newbies have to start somewhere. So here goes...
I happen to have a Miller 200LE serial HH-046968 .
Engine = ANON engine model CCKA-MS/2748J

I will, eventually, get my head around this machine and learn to fix it, as long, of course, as I can understand all the variations of the models. I'm happy to help with what I have found so far.