I don't have a vice, so I used a couple of clamps and clamped the sucker to a post.
I also don't have a large enough wrench for the huge nut, so I used a large adjustable pair of pliers.
Where there is a will, there is a way.
I use an impact wrench to get the clutch assembly off and on the bike. If you want to be correct, get a clutch holder tool and a torque wrench.