400ex axle bearing??

[z400rider03]

My friend has a 02 400ex and the axle is loose. It moves side to side and is noticable when he rides. Could this be his carrier bearing or something needs to be tightened? If it is the bearings, how would we take off the axle?

[riotact]

Here you go http://www.exriders.com/vbb/showthread.php?s=&threadid=359350