Ok, have the carbs all done and now I want to verify float levels with a clear hose off the bowls. BTW, the Ninja 250 carb cleaning directions were great.
Silly questions maybe, but is the goal still to have fuel level at the carb seam, +/- 1mm? I find myself questioning that because of the initial recommended 18mm float height setting.
Second question - using a short piece of clear hose, I find it difficult to coax fuel into it by just opening the drain. The hose develops a big air bubble. It seems to work best for me if I hold the hose higher than the seam, lower it then raise it, then keep lowering the end of the hose so the end is level with the carb seam and that seems to work the air out. I suppose the total length of hose is 8". I know you aren't supposed to raise the hose because it will give a false reading and can raise the fuel level in the bowl, but by then continuing to lower it (I should've used like a 10" piece) then I can see the fuel coming up slowly in the hose because the valve in the carb has to open again to let more fuel in because of the extra fuel needed for the hose. At least that's my theory. I hope this makes sense. Am I the only one that has problems with air in the drain/level hose?
Note - if you choose not to check fuel levels with a hose, it is still a good idea to fill the carbs because I had one bowl leaking so tightened it a little more. If this leak was discovered after install, it would have been hard to correct on the bike.
