Wouldn't start - Help

[fazersharp]

The buzzing is most likely your starter relay: When you press the button, the relay latches so current can pass through to the starter motor, but that pulls too much power, so the relay unlatches, meaning there's now enough current to latch the relay again, but...

Ok been doing some more reading on here and found this explanation that describes what you have said, might be useful to others that come along reading. 

You probably know this already but a relay is just a magnetic switch that uses a low current circuit to control a high current circuit ( ie the small starter button on the handle bar is the low current circuit used to control the high current starter motor). They're used in the starting circuit so you don't have big thick wires running down the bike and a huge starter button :lol They have two pins on the low current side (the starter switch side) which simplifying it a bit goes from the starter switch on the handle bar to the first pin of the relay, then the second pin on the low current side of the relay goes to ground. This powers a little electromagnetic coil in the relay. The electromagnet closes a switch on the high current side of the relay to complete the high current side of the circuit. There's two pins on the high current which go from the battery on the third pin, then the fourth pin goes to the starter and the starter grounds against the frame. The clicking sound you're hearing is the switch on the high current side opening and closing rapidly because the battery doesn't have the enough power energise that side of the circuit and spin the starter so it just clicks rapaidly. So a clicking relay is a good indicator that your relay is working but your battery power is low and needs to be charged or replaced if it doesn't hold a charge. Hopefully that makes sense. You can jump it off a car as long as the car is turned off or you can put it in second gear and push start it.

Just to expalin energise high current starter bit in more details:

When you push the starter the starter realy magnetic switch switches on. It needs certain amount of voltage and juice (ampers) in order to switch on and to stay switched on.

What is occurring in your case is that the starter relay engages.  This connects via high current switch in the realy the battery to the starter motor.  The starter motor loads the battery causing the voltage to drop but not enough juice to turn the starter. That starter motor load causes the battery voltage to drop, the reduced voltage is insufficient to hold the relay and it opens, disconnecting the battery from the starter motor.  The battery voltage recovers, because there is no started load present thus allowing the solenoid relay to re-engage and starting the switch on relay cycle all over again. Hence the rapid clicking.