I am trying to replace my motorbike clutch friction plates, but cannot remove the basket around the plates ( I think that's what people mean when the say 'basket' - the cover over the plates that keeps them aligned and turns them.
I have this strange partblocking my removal of the basket:
It has a cover with a spring that presses on the inside of the side cover when the cluctch housing is closed up:
It looks like I need a special socket with four splines to remove the nut thingy holding it onto the threaded shaft, but have never come across such a tool, and will attempt hammering it anti-clockwise first, before trying to buy or build such a tool.
What could this thing and it's function be? There is nothing inside it when the top is on, and it's shaft is joined to another protruding from the gearbox by a thin chain.
This is on a 2012 Big Boy DRT-250. I think the 'Big Boy'brand, however, is local, in favour of something more generic. It is a cheap Chinese import but quite a nice little bike for the stipend it costs.