My roomate has a GSXR 1000 and he has a little cylinder to hold his brake fluid.

My F2 however, has this little box with a window in it. Should I see fluid in the window? I don't see anything-am I about to be out of brake fluid?

 

yeah you should see fluid in there but if you don't and it is all clear then you need fluid but if it's full and it looks like you don't see anything then open it up and check