Just got back after a weeks holiday to find a replacement slave cylinder, so got to fitting it and giving the bike a little clean, when I come across this:
From a slightly different angle:
What the feck has happened here, and do I need to sort it? Does it have something to do with the leaking clutch fluid on my last ride?
Its a standard 14t on a pretty standard 749 bip, as far as I know the sprocket has never been removed/changed.