To update: Somehow an air lock happened causing the generator to overheat and shut down, I had to top of coolant let it run for 10-15 minutes shut it down and top it off again. Did this 3-4 times until the coolant level didn't drop. Installed a thermostat (since there wasn't one in the unit) and have been running around 175-180 degrees with no more problems. A gentlemen by the Name of Steve Fudge from TN (an expert with these generators) walked me through what to do over the phone.