Set the lifters and all four are firing. Took it for a ride and it ran well. Let it sit for a couple of days and went out. Ran good and while riding heard a loud squealing noise and bike shut down. Pulled over and restarted, a few seconds later squealing came back and shut down. I googled issues and spoke about starter clutch or stator. I took the covers off and the gearing looks good and all screws tight. Any clue on what issue could be before I attempt to replace things?