Just put my Y2K 290 back together replacing the main bearings, piston rings, seals etc. fired it up and took it round the garden, running OK and no leaks but I noticed a rattling noise, when I pull in the clutch it goes, let the clutch out and its there, I dont think the clutch basket was that worn.

It's not that loud and may have done it before the rebuild but was drowned out by the noisey main bearings.

Any ideas guys, does any one else's bike do it?

Edited October 1, 200520 yr by Mick

Silly but is it as simple as the lever being loose. Chris's 125 does it.

Cant speak for all of em but my 2001, 290 does and hasn't gone bang, 3 trials after a rebuild.

My '00125 did this, turned out to be a worn clutch basket. Replaced the basket and plates at the same time, completely cured! Just gets worn after a bit and rattles. won't do any damage, just sounds awfull!

Pete.