Re: 97 cbr900rr ran out of gas now won't start
With the carbs completely drained of fuel they do take a fair bit of cranking to get started, since there is no easy way to prime the carbs (I suppose you could pull the vacuum tap pipe off and suck on it...). How long have you been cranking it for?
One possibility is that you've pulled in some water that was sitting at the bottom of the tank when you switched to reserve. If this is the case you'll need to drain the float chambers on the carbs by undoing the drain screw on the side of each one. You'd want to drain and flush out the tank as well, and check out the state of the internal metal tube that is supposed to drain water from around the filler. These can rust within the tank and allow water into the fuel.