This pump is on a 2011 ktm350 probably what is happening to the pump on the bergs.(the 2010 and 2011 i have owned have never had a problem just thought i would share the vid I found)
http://www.youtube.com/watch?v=sedEgE_BK2k&sns=em
http://www.youtube.com/watch?v=sedEgE_BK2k&sns=em