Kart Wear Which Is Better, Go Kart / Cart With Clutched Engine Or Go Kart Without A Clutched Engine ?

Which is better, Go Kart / cart with clutched engine or go kart without a clutched engine ? - kart wear

I am pleased with the purchase of a 100cc go-kart and I do not know much about Go karts, so I do not know what to do, I've heard that those who wear easily and pushed slowly than the line, and I did not really know what the clutch and what it means, so that someone can help me, what?