AmalPilotCircuit, theory?

My bike runs and idles very well, but I have a question about how the Amals work: (I have the original Amals on my 75).
We are told to set the fuel level quite a bit lower than the top flange, done. Now the pilot jet fuel entrance is in the body, quite a bit above the fuel level. I am wondering how the fuel jumps up to bridge this gap from down in the float bowl to be sucked up by the pilot jet. I t works, but I don't see how. What am I missing?
Jaydee

If you look at the bowl, you will see a little channel running down from the top face into the fuel, just to the side of the float pivot pin. It marries up with the pilot pick up on the under side of the main body. Check it's clear when you have the bowls off. Google "bushman's carb tuning secrets" there's some good pictures there.

When floats depressed by tickler they only need that enough to fill-prime the small pilot 'chamber' to get the enriched starting slug and don't need to let any fuel escape, but tricky skill no too. Idealy float level diddled till pilot air screw gives best warm idle ~1.5 turns out but can still work a treat well off of that baseline. Quality of sealing of throttle slides in carb bores greatly influences pilot screw and slow idle ability too. Ya can smear grease on them to see if any difference noted to renew on not.

https://www.oldbritts.com/amal_tun.html

L.A.B. said:

https://www.oldbritts.com/amal_tun.html

Click to expand...

Hence the need for 'tickling' to flood the pilot circuit...?