Look up “Flight Systems”. They build Onan replacement parts. Also have self help videos that are awesome. I’m NOT much on motors but after watching a couple videos I went up and did some testing with a meter that they showed how to use and found out my brushes were bad. They also test your circuit board and voltage regulator for a good price. Awesome help. And good prices if you need parts. Ended up costing me $96 and she is putting like a kitten.