Marko,
When I first bought my 4100, I stopped by Walmart to buy a new 5 gallon can for diesel fuel. All they had were 2 1/2 gallon cans. I bought 2, because I was in such a hurry to go home and drive the tractor that I couldn't stand to go to another store to find a 5 gallon can.
It turned out well-takes a few seconds longer to re-fill with 2 cans, but it is easy to fill the 4100 with the 2 1/2 gallon can. It's half the weight, plus it is easy to identify the diesel cans among the other cans of gas, pre-mix, kerosene, etc that live in my garage. Enjoy the 4110.
John