09-10-2013, 04:31 AM
The reason that the gas "settles" could be that the over-fill is draining down the evaporation tube into the EVAP canister. just around the bottom of that tube in the filler cap area there is a shelf with a hose that sticks up out of it. It's part of the Evaporative Emission Control System for the US bikes. That's why the manual warns to not over-fill the tank. If you have a copy of the service manual you can see a diagram of the system on page 1-33.
XeNoSCR
XeNoSCR
