The short form of my question is that adjusting the float tang to reach spec float height (Honda FSM - 14.5mm; Clymer's - 22mm) directly affects the travel of the float needle. The question then is how low should the float needle be dropping out of the cylinder (if at all) and at what point should the spring be entirely compressed when the float bowls are full?
Background: New to this forum but longstanding member of therangerstation and r6-forum, among others. I've done a lot of searching and answered many of my questions but not these.
I am working on a 77 CB550F, which had excessive gas leaking out all 4 carb overflow lines (floats set at 22mm) and a 3000rpm idle with the idle screw all the way. I am doing this for a friend who is getting married as a part of his wedding present. The floats have been 'adjusted' a lot so the tangs are at widely varying depths (some above the thinnest metal strip and some below). I can't be spending loads of $$$ on this so I need these floats to work rather than buying new ones. It seems as though someone has torqued the floats rather than the tang to adjust height which means that when all are adjusted to the same height (22mm) the springs on the float needles are not all compressed to the same amount when i push the floats as far up ('up' with regard to them being installed) as they will go.
1. Should the tangs run closer to parallel (above the rest of the metal, see first pic) or below (2nd pic)
2. Being new to carb injection, I have deduced that if the bowls are overflowing, I should increase the float height in order to shut off the gas flow earlier. Is this right?
3. At 14mm the floats are at the top of the chamber without the tang even beginning to compress the spring. Could this spec be accurate. Does not the spring in the float needle need to be fully compressed to stop gas over-flowing into the bowl
4. There is a metal stop on one side of each float that seemingly prevents the floats from dropping so low as to allow the float needle to fall out. Is this in fact the case and should I adjust this accordingly?