finally got my bike together and when i key it on i cant hear the fuel pump come on...i dont have the fuel tank on yet but i didnt think it would matter im not trying to start the bike just roll it over and get a feel for everything... anyway no fuel pump everything else is good i checked my connections and the fuse... where else can i look... .is it controlled by the computer or is there some kind of fuel pump relay... where does the power come from... thanks Ryan

 

since its carborated you're not going to here the fuel pump prime itself.

 

There is a fuel cut-off relay, it's a black square thing that sits in a rubber mount near the fuel pump and cuts power to the pump when the ignition is off. Unless US F3s are different from UKones - what computer?
I had problems with both pump and relay on my old CBR and found that in emergencies 1) the pump runs OK if the relay is bypassed with a piece of wire with a connector on each end, and 2) the bike runs OK with the fuel pump bypassed and the petrol cap/fuel filter line connected directly to the carbs using gravity feed from the tank. Not a long-term solution, I expect, but might be useful. If the pump is OK you should hear it ticking regularly when you get the engine running.