Hmmm ... a few weeks ago you asked are the bearings caged or loose. They are Caged Needle Bearings.
As per answer I have changed mine 18months ago and it took a while to get the old ones out. Resorted to grind/dremmel them out.
Also in The Haynes service and repair manual. I recommend you get a copy, maybe off fleebay (about £18 delivered) or motorbike shop, could be more expensive though.