2000 Yamaha XJ 900 Diversion. I've got an engine noise that seemed to have come on quick. It appears to be coming from the top of the engine. It sounds like a shaft running in dry bearings. Any idea what it is and how to solve it.

I`ve just found my instruction manual and it says -10* > 45* SAE 10W-40. 0* > 45* SAE 15W-40. 3.2Ltrs Without Filter replacement and 3.4Ltrs with filter replacement. Ian

I`ve just found my instruction manual and it says -10* > 45* SAE 10W-40. 0* > 45* SAE 15W-40. 3.2Ltrs Without Filter replacement and 3.4Ltrs with filter replacement. Ian