i have what appears to be oil coming from top of this tower shaft. Connects cam to oil pump. Is there an o-ring in there? Seems like its going to be a big job. Do i have to pull the motor to access this part? Thanks.

 

should be an oring, Cant find it in parts book though. you may have to take intake off to get to it. probably be a good idea to change upper and lower intake gaskets anyways. may be where oil is coming from.