91 honda f2 with 40657 that isnt a mistype is leaking somewhere by the crankcase i ripped off all the plastic and wiped it off let it run for a couple minutes didnt see any oil come out of anywhere, so my question is could it be my chain throwing the mixture of my lubrication and grum off the chain up ontop the botoom of the crank shatt cause i oil my chainm religously cause i cant see any leaks, any ideas will be helpfull the oil spots are on the right side by my manual cam shaft chain adjuster and kinda on the side a lil below the side case where the oil goes and then coating the bottom above the exhaust none by the oil filter and none on the left side of the bike really jsut some on the right side and across the bottom of the crank case,,any help will be apprecitaed thank you

 

If it was chain lube it would be on the left side, not the right. And the sprocket cover on the engine pretty much keeps that crud under control. Its possible that its leaking from the manual cam chain tensioner (past the o-ring around the main adjusting bolt) or from around the gasket. Has the bike ever been laid down? I have an F2 and it had been crashed several times before I acquired it and I found that it had been slid so many times that my stator cover was actually so thin that oil was practically weeping through it even though I couldn't see any holes. Make sure your dipstick o-ring is in good shape. Or its coming from the clutch cover gasket.