I'm also going to change the clutch/transmission oil and have cobbled together a pipe and funnel for the refill, it's a bit of a pain to get to, the outside diameter of the pipe is 10mm. Will it fit in the hole, I think it will but I'm not sure.
I'm planning on doing it next Tuesday so I want to get every thing sorted before I start. It's a an 650 12 plate if it makes a difference.
Off Topic
Just been looking at all those icons above you can do all sorts with them, pity one of them isn't a spell checker, you know something really useful