The first step is to pull the speedo out. Fed up with trying to maneuvre my hands under the top yoke, I removed the headlamp first:
This means that you can remove the cable, the speedo lamp and the little M6 nuts securing the speedo into the yoke very easily.
This post is not going to be a speedo rebuild tutorial. There is a lot of that already on this blog, and more in my forthcoming book. No, this post is just to record the rebuild of the speedo clutch; this first step is to strip the speedo down to the movement and then take the movement apart for cleaning and inspection.
This is the clutch, disassembled with the parts in the correct sequence. I have cleaned them with methylated spirit and a brush.
They are lying on a sheet of white paper - very useful for cleaning wheels!