My Generac is the NP 50g 4500 watt. I have been messing with it since I took it out and found the brushes were not producing, cleaned slip ring and now have a steady 8vdc. It will work momentarily then quit I think the avr is bad. May be worth investing a little and just keep what I have. The generator is is a 1995 model but has very few hours on it. The rv only has 7200 miles on it and i have put about a 1000 of them on it since I have had it. Rv belong to an older couple and he had cancer and passed away. Has been under cover since day one. So I may be having secon thoughts.