Sorry I tried to post a picture from Google Photos, but could never get it to work. I have an 853 with the name on the fuel pump saying Zexel. On the right side of the pump there are four metal fuel injection lines coming out. Centered in the middle of the four lines on the side of the pump is a cap with a bolt in the middle. At the bottom of the cap is where the fuel is leaking out. Is there a gasket on this cap? Would I just unbolt the cap and replace the gasket? Would it be under any pressure? Thank you, Greg