Do you mean that anime about a yoyo tricks master? The title is not Super Yoyo actually, it's Chousoku Spinner.
Do you want to download or to watch online? and CRV, there's an alternate name for Chosoku Spinner, it's Super Yoyo
I think i've watched the anime..it's has lots of skill that really make me want to play a real yoyo...
alright download it goes, cause I doubt it's going to be watchable somewhere online since it's kindof old right? After some searches, it doesn't seem there are direct downloads that are up, and no streaming videos so you can either 1. Go buy the DVDs if you do find them 2. Download them via torrent and hope there's some guy seeding your anime