I'm getting an intermittent but fairly loud high-pitched chirping noise from somewhere under the tank when the bike gets hot.

The radiator fan seems to be working OK and the chirping is independant of that; only thing in common is that it only occurs when the bike is running hot (now living here in Albuquerque that is much more often than my previous location where I first noticed it several months ago).

I suspect a bearing somewhere; perhaps the water pump is acting up?

If anyone can shed some light on what my problem might be that would be great. Hopefully it's nothing serious, but...

Regards, Jeff