not good eh?well you will have to pull it apart mate it has a small cover theat goes on the back of the engine either inside the transmission cover or behind the rear wheel cant remember?anyway take the clutch off the shaft then you can see easily the clutch needs to come off regardless then you can take off the cover and tap the shaft the clutch or wheel fits on with a copper hammer or similar and the case will seperate from the main crankcase then you will be able to see the dodgy bearings and take nthem either off the shafts or out of the case sometimes it can be hard to get them out the case you need a blind bearing ouller or slidehammer j.p good luck dont forget to put some new oil in after ep 90 gear oil is what it takes mate :)
adam bike doctor, July 2006