First, determine if it is the clutch. While it's not working, see if the clutch is not engaged. If it's not, tap it with a metal rod(baseball bat or something) and if it kicks on, there's your problem. If that's it, the correct way to fix it would be to remove the clutch from the compressor and correctly gap it. Or, to be honest, i don't know if you would actually have to remove it or not from the compressor, because i've never done it.