Things commonly overlooked that are sure to stop your ride in it's tracks.

Drive belt, idler pulley(s) and tensioner. Amazing how many come in on the hook because bearing in a pulley let go, belt off and caused other problems or even worse you didn't notice and fried the engine. Anything north of 5 or so years / 100k you should at least pop the belt off and spin everything the belt runs and listen carefully for one starting to fail. Another tell tail sign is a pulley that spins for a long time after you've given it a flick, chances are it's running out of grease. A ton cheaper n easier to replace now vs stuck at the side of the road.

Happy trails.