I am working on an 83 550L for a friend of mine. (Never take over someone elses job!!) They "rebuilt" the carbs, with good intentions but no main jets, and put them back on. I sorted this out. The carbs are not the 4 singles but 2 together for cyls 1&2 and 3&4. I know the hook up for the fuel inlet and vacuum lines, from the petcock to the #3 carb, but there are 2 other lines that I don't quite get. One is coming off the right side of the #2 carb, and is attached just below the diaphram top. (pic 1) The other one comes off the left side of the #3 carb. It is attached just above the fuel crossover tube. (pic 2) There is also a fuel guage on the tank, should one of these go to the sending unit? Apparently I can only load one picture at a time. The 2nd one is coming in the next thread.
I have been working on bikes for quite a few years now but haven't seen this setup. Any info would be helpful.
Cheers
Dan

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