By request, here is the link to the current 570 / 575XP workshop manual. I glanced at the introduction and there is a paragraph entitled Modifications basically stating that things are subject to change in the manual as changes are made in production, and this manual will be eventually outdated.
http://weborder.husqvarna.com/order_static/doc/HWEN/HWEN2005/HWEN2005_1140291-26.pdf
http://weborder.husqvarna.com/order_static/doc/HWEN/HWEN2005/HWEN2005_1140291-26.pdf