Here's my bike:
This is where the oil is leaking from:
It looks pretty clean in that photo because I cleaned it off with engine cleaner so I could better see how fast the oil was leaking. If I took it out for a ride, I could see oil coming out and starting to run into the cooling fins within 2 or 3 miles.
Here's the bike without the headcover:
This is what an ignoramus I am concerning motorcycles: When I took the head cover off, I could see quite a bit of oil in all the three places I've indicated with arrows, but I assume that that is normal. Oil should be splashing around in there, shouldn't it? For instance, that troublesome plug, which creates a little dish, was about half full with oil, but I don't know if that's a problem or not.
Anyway, I was hoping that I'd be able to see an obvious problem after taking the head cover off, but I don't think I do. I was assuming that that plug was the problem, but it seems fairly snug to me. It's not askew or anything. I can't really move it around with my hand, although I realize that it could still be leaking despite that. Is there any way I can check for leaks at this point? I mean, I can't run the engine now.
Does anyone have any suggestions? I think at this point, although the plug seems secure to me, I'll replace it anyway, hoping that that was causing the problem. Is there any other likely suspect that I should replace now, seeing as how the head cover is off?
Also, can anyone (LWrider?), confirm that it's normal to see oil where those valve springs are? Sorry to be such a rookie.
PS: By the way, hope your friend comes out of it OK. Losing the legs ... wow, that would be awful.