#7 PostAuthor: RALPHARAMA » Mon Jun 23, 2008 6:50 pm
Haven't got a Z1, but I do have a Z1000A1 and that definitely has needle rollers. I can't remember the sizes of the top of my head, but if you measure the little buggers you can get new 'uns from a bearing supplier such as simplybearing.co.uk
They are caged and you won't be able to get 'em out in one piece. I can scan /copy the relevant part of the workshop manual if you like. They do need to be drifted out.