oil in starter?

It started off that I thought I just had corroded connections on my starter. So I removed the starter and noticed I had oil on the fly wheel also. I do not think this is correct?
I also opened the starter and it was full of oil.

My next step is to figure out where or why there is oil inside that cover on the right side of engine.

I am looking for information on if I can remove the cover with out getting into something above my capabilities.

Is there a shop manual I can download for referencing to?

any help would be greatly appreciated.