Petrol strimmer spindle not spinning

[ferkh10]

Having a problem with my Draper petrol strimmer. The engine is firing up but the brush cutter is not spinning.
There is a metal rod spindle running all of the way through the shaft to the engine.
I’ve narrowed the problem down to the 2 pictures.

In the first picture, A (think that’s the clutch) is spinning so all good there. When I attach it, picture B isn’t spinning at all. Feels like A and B aren’t connecting, and hence nothing downwards from B is spinning.

Any ideas? Hopefully something simple as I’ve got a load of weeds that needs trimming this week

 

[yorksbuilder]

So you ascertained that the clutch spider spins. Does the clutch plate on the driven shaft spin freely? and the hub you label with B also spins freely with it?

 

[ferkh10]

Yes, all spin freely.