How easy is the voltage reg to either adjust or obtain and replace? Yes hand crank and electric start. And yes i don't mind tinkering with it. I think i would enjoy it. He said he imported several of them and used most of them to run on the pivots or irrigation pivots in arizona. He moved to oklahoma and brought a couple with him. While i would love to have one that runs slower I do think this one would be a good one to have at the farm as we are off grid and would be able to run the deep wheel pump along with being able to charge up the battery bank. Yes we have solar but lots of trees so don't get as much sunlight as would be nice. Im just wanting more info on the unit from you all out here if I can get some pointers on it. The price isn't bad either. $750. thanks