Not sure if your '09 is an 8V or 4V, but on my '07 if you loosen the alternator off while you're in there, it's not hard at all. Sorry you've gotta' go in again but once you've loosened off the alternator, you may as well replace the belt and the bearings ! Also the air box may have developed cracks, so a new one wouldn't go astray. On the way back out, if you pull the fuel sender unit from the (now removed) tank, you'll have a great opportunity to replace the sender unit and the "quick release" connector from the tank, (it's bound to break eventually). Given that your bike is 8 years old, bugger it, you really MUST replace all the hoses under there.... Um.. No, I think that's about it, for now ! Oh one more thought, the heat under the tank can cause the wiring to become brittle and fail, so a new wiring loom and ECU would be good preventative maintenance. See, aren't you glad your oil sender flickered ? It's helped no end !!!...Hey, look on the bright side, you don't have to waste $2 on a cheap wrench to cut in half, bonus !!! Seriously though, check and secure the connector on the neutral switch while the air box is off, it's very easy to locate and well worth it. Oh, and while you're down there, check and replace the....blah, blah, blah...Actually, all that reminds me of an old Monty Python sketch !