What size nut?

Hey all, Would anyone know what size hex nut on the clutch for speedfight 2? Also any ideas how to get it off? I tried this morning and nearly threw the thing away lol. I was looking at this: http://www.pedparts.co.uk/product/368/clutch-holding-tool

 

Not sure about the Peugeot but I think all Piaggio's use M10's if that's any help.

 

If it's the real thin nut that holds the clutch to the torque driver, an impact gun works the best. It's pretty hard to remove any other way.

 

39mm if i recall correct, and its not much force to tighten it either. but yeah +1 on using an impact gun. and dont forget there is a big spring behind it, so it will try to fly off when you undo the nut.....
(you can hold it in a vice if you are SUPER careful)

 

Pair of 4 inch G Clamps and a bench vice I use. They're especially a bitch if they have a stronger performance spring on them.

 

Thanks guys But i tried this morning and managed to get it off with a 15" Adjustable spanner and a pair of vice grips. All ready for tomorrow for the new clutch and bell.