How do I put the assembly fuel line in my ryobi 890r?

I am replacing dry rotted fuel lines. The part I need help with is 791-182353 from outdoordistributors.com. There is a filter on one end but i can't put pressure from inside the gas tank (I can't get my fingers inside it) to get it up through the hole...help please!!! I have tried to pull the tube away from the filter, but it won't seem to budge and I don't want to ruin it...or tear it. I am totally at a loss. Any hellp would be greatly appreciated.