I had knee surgery and am starting to fool around with my Zs.

The carbed 240 was a little more trouble to start. I think the bowls had evaporated all the fuel out. For some reason I decided to hit my precious carburetors with a small tack hammer. The lord only knows how many have dents from being hit, trying to knock the floats loose. Well I saw the most obvious thing ever before I started whalopping the sides of my float bowls.

Is there a chance in hell Skinner Union or Hitachi put this boss there for any other reason? I tapped them both a couple of times without leaving any marks and that little baby roared to life after getting a flow of fuel.

Could Skinner Union/Hitachi have some foward thinking or did they just put a big chunk of aluminum to show the fuel level?

Edited Sunday at 07:36 PM1 day by siteunseen

That boss could be a surface for locating the part in a machining fixture.

I don't know if it's the ONLY reason for it's existence (seems unlikely), but that is where they printed the identifying markings: