I show the capacity at 6.8L
so if the gas pump is shutting off and your Gascon gauge is not showing full, remove the nozzle a bit and continue to fill the tank a small amount at a time with the nozzle tip quite close to the tank opening to get a full tank. NOTE : always fill the tank on the main stand or called the centerstand !
As use of the side or prop stand will prevent the entire tank to be filled.
After visually checking for full tank, and a few minutes pass, the fuel Gaige should read full.
If it does not, you may have an issue with the tank gauge sender.