make sure you tell him what tranny fluid to use...lolat the shut-off just pull the line leading to the carb if it's hard and brittle just cut it off and replace it. pull the carb off too your going to have to clean it, but mentioned earlier you will most likely have to rebuild the carb. also do not try to kick it over dry get you a can or marvel mystery oil pull the plug pour 2 or 3 caps fulls in put the plug back, in the meantime while your working on the fuel system just let the engine soak. When your done with the fuel system remove the spark plug and slowly crank over the engine by hand 4 or 5 times you should be ok then.
For future reference next time you put a bike up for any length of time dump a bottle of Sta-bil in the tank, pull the bowl off the carb let the fuel drain out. then pull the plug and put a few CCs of tranny fluid in the head crank it over to lube the walls , put the plug back and your done.