Uh.... no. If you did that, that would mean that you would be carrying a full tank of fuel vertically, with the gas cap at the bottom-front of the tank in that orientation. IE: you would be pouring gas out of the fuel cap/fuel vent and all over yourself and the ground during the entire walk back to the bike. Probably best just to carry the full tank upright, but the idea is still a good one.... you can just pop the tank off and carry it to the gas station, then use the looped hose as a handle to carry it back to the bike.
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