Too much oil

[Pete7874]

I looked more closely at the engine oil level today of the bike I picked up last week. It looked like it was overfilled. I drained about 100-200ml and now it's at a 'full' line.

I also unplugged the air cleaner drain hose and there was some oil in there (not a whole lot). Are the two related?

The air filter itself looked clean, but it smelled of gasoline.

Anyway, what else could have gotten fouled up by having too much oil in the engine? What should I check? The bike runs fine as far as I can tell.

Thanks.