
I'm not sure where Yamaha took the 3mm measurement.
I'll check tomorrow in the daylight and see if measuring from that funky tab/flange thing on the carburetor body directly above the float bowl screw will put their 3mm in the range shown in the drawing, nothing else makes sense except a typo in the specs or they drew the wrong marks on the illustration.
. From your statement, seems to be fine for your location at sea level also....go figure
. Of course, getting running fuel levels identical on all four IS the key to a very smooth running motor with all four cyls. doing the same 'work' at any given rpm
. That's the part that has one removing and tweaking float level many a time to get those fuel levels identical on all four carbs with bike at an idle, which myself, I FINIALLY succeded in doing just prior to my crash(totaled ST1100..and myself) back in June 2015.




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