Ive got the manual downloaded(100Mb) and sifting through it. I looked at that pic you posted and my bike but all you can see is the rad and lid.there is no inspection window that I can see only all metal and the cyclinder wall.And you do indeed need to remove the top fairing to top up.I looked at a 2001 model and that had an expansion tank next to the rear shocker!Not my bike! :-/