First, thanks for allowing me to be part of this community!
So I have a question that I think someone here will have the answer to.
I have a 1985 250sx that I am currently restoring. My issue is, that I have an oil leak coming from the left side of the head. It is coming from a large slotted bolt(like a flathead screw). I think this bolt may be the rocker arm shaft. Would someone verify this is correct? Also, what would cause this to leak(is there a seal or o-ring in the inside)? Any help is greatly appreciated!