I have an 98 there are 3 lines at the bottom near the stator one of the lines got disconnected it was a little plastic piece at the end of it. My bike will turn over for 5 sec then shut off. I believe it goes to the carbs but i could be wrong i just dont know where it goes. Any help would be much appreciated.

 

They'll be tank vent / overflow hoses to the base of the tank - best reconnect it esp the fuel related ones to help prevent gas getting onto the top of the engine.

If you 've had the tank off make sure the vacuum pipe is connected correctly on the petcock i.e not on the drain spigot pointing down but at the back pointing horizontally.