Extracting Old Fuel

[dolinsk71]

I am not particularly new to the jet boat world, but been owning only one boat, and my experience is limited mostly to what I learned form this forum, and I am extremely grateful for that!
This time, I am in trouble after the boat has been sitting in the garage for over a year (Florida). I had octane-free fuel (with stabilizer) in the tank, and now, after starting, the engine hesitates at higher RPMs (new spark plugs).
I think, I need to evacuate the old gas. I tried to feed a standard automotive fuel extraction hose in the fuel refill line that goes down into the fuel tank, but the hose gets stuck somewhere toward the middle. It fills like the hose hits some kind of obstacle (filter screen?).
Anyone can help with ideas how to get rid of old fuel?

It's Sea-Doo Speedster 150, year 2008

Thanks in advance!

 

[JPass]

I don't see any screen or anything in the diagram. Maybe try something a little more rigid to see if you're getting hung up on the bend in the tubing.

You can always remove the fill line going from the filler cap to the tank if it's accessible and drain the tank from there.