Makeshift way that took over an hour to put in 3 quarts.
1. Turkey baster, take the ball sqeeze off.
2. 3' of Fuel hose - I always keep odd stuff like that with me
3. Paper towel roll.
First sqeeze the tip of the turkey baster into the fuel hose
Second put hose in filler tube
Third put paper towel roll on a chair/table/door/platform above the filler hole
Fourth put the baster inside the center of the roll and stuff paper towels to make it stay
Fifth, pour in and let gravity pull it down.
1 hour later success, 3 quarts in. if you spill paper towel roll absorb the oil. In the end throw the paper towel roll away and start the generator.
Where there is a will there is a way. I left my transfer case pump In seattle, wish I brought it.