As Derek states the centre nut is a real barsteward to remove. Like he suggests make a holding tool from the old plain plates. I used four of them attached to a length of steel that would reach the ground to stop rotation. You will need a 32mm socket, a long extension bar and plenty of grunt cos it is torqued up to 186nm. The clutch basket is then held in place by about 8 smaller bolts which are thread locked in place. A sharp crack on the extesion bar with a rubber mallet should break the thread lock. It is a pretty simple job then to remove and refit. You will then need the home made holding tool and a good long torque wrench to get the nut back to 186nm. You will think the bike is just about to lift off the centre stand when the torque wrench clicks.