I am looking to start regular maintenance for my bike.

Probably going to buy new battery, change oil to 20w50 and buy the k&n oil filter cleaning kit.

I reading and am wondering if valve adjustments need to be regularly adjusted. I don't know what it is exactly, saw the guide on here though. Is it just a one time thing when you break it in? Or something you should do every so many rides?

Any help would be appreciated, thanks!