Ricardos,

My local Suzuki dealer said that it was a bushing or bearing that was some sort of composite material making the sound. He said he had seen it in several other Suzuki engines and a couple Yamahas. To fix the problem I was told the power head would have to come off, but if I just left it alone it wouldn't hurt anything and may eventually go away as the bearing (or bushing?) wore down.

I guess that is what I will do, but it sure is driving me nuts.