Thanks for the reply but not exactly sure what you mean.
By "lever" do you mean the govenor plate?
Or do you mean the 3 holes on the little tag that pivots off the throttle lever or the 3 holes on the govenor plate with the little pin.
Regarding the govenor plate, the 3rd hole is the correct location for the little pin that hooks the spring, on this application. I photographed it before disassembly and the FIAT factory workshop manual also clearly shows the pin (and spring) in that position.
Not 100% sure about the location of the hole for the other end of the spring (the little part that pivots off the throttle lever). I would be surprised if changing a spring position by one would completely kill the fuel flow at start up, which is what's happening. Not even a drop is coming out of the head ports. Nada.
Anyway I removed, cleaned and rebuilt the pump today, putting a reseal kit through it. Made sure everything was very clean and took my time. Following 2 manuals and the YouTube video I mentioned.
Guess what, after reinstalling and testing - no change! Grrrr.
Tomorrow I'll have another look but I have a thought. The metering valve has a slot cut into the bottom part which didn't click into anything down its hole when refitting the governor linkage, it just spins around in its hole, which makes me wonder if something isn't right. See the last photo below. So what exactly goes in that slot? I think that's the first thing to check.
The metering valve dropped in easily, it moves smoothly and freely with no resistance at all. Had a little varnish on it which I polished off but other than that was fine.
Anyway a couple more snaps, looks nice. Pity it doesn't work eh!
