This is on the XS2 engine. It wasn't until after I put the cases back together that I read about an "Oil Sealing Gasket" that goes between the crankcases. I was pretty good about documenting and taking pictures of the engine as it came apart, and unless this seal rolled away somewhere, I have no idea if it even existed. It appears the case is blocked, at least on one side, and of course there was a stud blocking the view of the upper case. It's part #21 in the picture (which looks like an o-ring, but its a solid piece). Part number 256-15395-00. Has anyone else ran into this and forgotten to put this in, or had an engine without the seal? If it was in there, I can't imagine how it escaped. Since it appears that the one case is blocked, am I assuming that if the other case is open, that there is oil under pressure (more than crankcase) that will leak out of the cases?
Thank you.
Thank you.