Why do fuses go bad?
 

I have had the same fuse go bad twice. It happens when i push the starter button. What causes this?

check the fuse, make sure it is of the correct rating. Some fuses are slow blow vs. fast blow (i.e. requires overcurrent for a sustained period of time). Also the cause of most fuse failures is cyclical fatigue which can be further induced by heat and overcurrent. What fuse has gone bad..the fuse powering the starter relay?

Yeah.

check the relay itself, the coil windings may be shorted causing higher inrush currents. Measure the resistance of the coil with an ohmmeter and then buy a spare one and compare (or check coil resistance rating from the manufacturer if given). Also a loose connection causing elevated current could be your culprit.

Check your battery connections, terminals may be due for a cleaning.

they look clean

That's irrelevent if you're blowing the fuse for the relay....unless you really meant the main fuse coming from the battery's positive terminal?? Do all of your lights die as well?

Yeah i had no power at all. It was the main fuse, its burnt out.

The fuse did not go bad, either you used the wrong rating or there is another problem with the bike. Sounds like the starter may be drawing too much current.

Edit. I assume you used a new fuse.

Fuse was bad, the center was broken. Correct rating stock one. Yes put new one in.
I have to check the current on it soon.