The top cap needs removing with sharp screwdriver and then this will reveal an Allen key. Undo the bolt and the knob and sleeve can be lifted off.
You can't really avoid damaging the top cap though.
I have an S with the silver part split so need to replace it. I've been looking at third party ones on eBay but they all seem to be the type that screws into a thread whereas the 500 has a bolt that goes into an internal thread. Can anyone recommend what type I can use? Thanks
I have an S with the silver part split so need to replace it. I've been looking at third party ones on eBay but they all seem to be the type that screws into a thread whereas the 500 has a bolt that goes into an internal thread. Can anyone recommend what type I can use? Thanks