I've had 2 f2's with the same problem. At first I thought it was just my first f2 but the second just did this yesterday as well. When the bike starts to overheat the coolant expands and bubbles/boils out the top of the canister all over the ground? Whats going on with this?

 

Instead of bubbling over, the overflow coolant should be flowing via the black tube into the coolant reservoir. Double check that isn't clogged and coolant can flow properly. Otherwise I would suggest buying a new radiator cap, because yours isn't sealing?

 

Or you just have way too much coolant in the system (or did before it all came out).

 

Or you have the wrong ratio of coolant/water, causing your coolant to boil in the first place.

 

Remember coolant ratio no matter where you are should always be 50/50 that is the best protection hands down besides a good gun :P

Live to ride and ride to live!