I have a FE570S 2011, second time out the fuel pump did not work at all after riding the bike for a while. Got the bike home and it started right up. Contacted the dealer ( 3 brothers ) and they had no idea what the problem was. I emailed KTM america and mentioned the problem I had and that it would be better to replace the pump then get stranded again knowing it has a problem.
They did get back to me saying that some of the problem 2010 pumps may have gotten on some 2011 bikes and so they replaced it for no charge. If yours has not stopped working yet, then it may be okay.