Never seen a Harley that was accurate in that department, I dunno if it can be adjusted either, not looked into it, with mine I just worked out how far I could go obeying the posted limit once it went 20 to empty, that's at least 70 in my case, sounds like you would get further than that, chuck a couple of litres in the bag and push it out a bit or calculate your k's per litre on what you used to that point and apply that to what's left in the tank when you fill it, that make any sense?

StreetGlide has 22lt fuel capacity, same as Ultra & RoadGlide,  & my 2011. Softail fxst, has 18.93lt. 

Fill and start. no issues

Also there is no fuel reserve on EFI bikes so if your out of gas your buggered.  Never assume you will EVER get close to the posted capacity of your tank either as its assumes that you could 'in theory' drain your tank, but in the practical world the fuel pick will always leave a 1/2 to a full litre minimum in your tank. 

Better to know your bike mileage per litre and use that as a guideline

100% agree - I trust my odometer more than the fuel gauge - after riding same bike for a while you get a feel for how many km before reserve & then how many km until empty, you'll know by how many litres go in when you refill.   

I can get 56km after fuel light comes on. But at 32 to 36 km after it comes on, in led read out on dash, says LoFuel