got an 02 650 praire which I bought new in canada. the last two dice runs I have been on the thing overheated. the first time it blew the line that routes coolant to the carbs. I replaced it and cleaned the radiator but it did it again yesterday! It was blowing coolant out the cap. what the heck is up with this machine, i am ready to get rid of it!!

 

You may need to clean out your radiator, just get a regular garden hose with sprayer and spray through the radiator from front and back. Most will run hot when radiator is clogged.

Also try the new dyna cdi, it is supposed to help the bike run cooler.

You could also try some of the heat fighter kits, just check around there are a ton of them.

Good luck