My wife has a 750 honda shadow spirit 2003 dc that is leaking gas at the boot that fits from the bottom of the carb. to the front cylindar what is causing it and how do i fix it

This sounds to me like a carb float being stuck open. Turn off the gas and drain the offending carb(s). Next, turn the gas back on and sharply tap the float bowl with the plastic handle of a screwdriver as the fuel bowl refills. The goal here is to vibrate the float to free it up. If doing this process a couple of times does not free the float I would remove the carb(s) and clean with a spray carb cleaner. Clean the air filter then re-mount carb(s). Next Remove the water trap bowl at the bottom of the petcock, (gas valve). Dump it, clean it and re-mount it, ( not all bikes have a water trap bowl ). Install an inline fuel filter.

THis should solve the problem.
Please rate this answer. Thanks smatthews!

I am having a fuel leak from my 2007 honda shadow spirit .when i removed petcock o ring was on top of fuel strainer where does this o ring go?