Problem fixed. Worn pulley and fan belt not tight enough. Soon as machine would get to operating temp for about 20 minutes would go to 220 or 215. One person cannot tighten belt properly. It takes 2 guys, one holding tension and another tightening. The perfect tool is a tire tool bar for changing tractor trailer tires. Go underneath alternator from opposite side and pry up till belt tightens like a banjo string. I've always been trying to tighten by myself. I think this is the problem why so may people have this problem. I cant get my machine to go over 190 to 195 no matter how hard I work it now. Given, I'm not pushing a head or any hydraulic attachments. Just bucket work. Hope this helps.