Have you done any work on it lately? I would start out by checking for any shorts in the wiring. It's common for a short to cause a fuse to blow.
Do you have fuel and spark? it's a process of elimination so start with the basics.
Welcome aboard from Gulf Coast AL. As Jeff mentions above have you done any work on it, and did the problem start after that. I did some work replacing my grips once and that happened, found I had a pinched wire on the stater button.
It happened about 2 miles after I degreased the bottom of the engine. I'm going nut trying to figure this out. Thank you for any help, I really appreciate it