He will likely describe to you the procedure for "flashing" and reinstalling the gen. I would put a good volt meter on it and adjust the voltage regulator to specs before running it too much. Might be good the way it is, might not. It can be adjusted quite a bit, I reset one 30 years ago to 14+ to charge a 12 volt battery, so far no problems. Set that high it will of course burn all the 6 volt items, including the battery.
The brakes just might respond to filling and bleeding, without further work. Bone dry is better than full of contaminated fluid in my book.
Good luck, were pulling for you.
