If you are only wanting to remove the clutch nut then try Harbor freight and buy the largest adjustable (Cresent Wrench) wrench they sell. It is easier to remove that nut with a wrench than a socket. This nut is not especially user friendly to remove, but in my opinion easier with the wrench.
Besides when someone approaches you to show you how to do it with a socket, you can beat them to a pulp with the wrench -- it is THAT frustrating to get broken free unless you watch the HOW TO video on Youtube....
Actually, you don't really have to hit anyone with the wrench, but DARNED wouldn't ya just love it if people would be more help with their hands than their mouth...LOL