Does the fuel pump on a 1994 Honda Shados stay going, or is it only to prime the carbs when starting?

My Honda Blackbird is also carbureted with no fuel pump, therefore I don't see why it'd be necessary for a classic style V-twin.

Is it on all the time while the engine is running, or is it just used in tandem with the starter?

Pressure activated fuel pump, On all the time thru a pressure gauge.

Not sure why but guessing the fuel system has a vacuum-release type petcock, the pump releases that vacuum.