On the VERY bottom center of the tank is a swirl filter. The gas is poured onto it from the middle of the tank. To me, the filter looks exactly like a Wax applicator that come with Wax cans.
You will see a circular metal can that has a rubber guard around it. Take the guard off, remove the 6-8 phillips head screws, and it will reveal the filter.
When I saw the filter, all I did was take the air compressor and spray some of the dirt from the outside(didn't really worry about the inside too much)
That so far is the only filter of some type I have been able to find in the gas tank area. I'm preparing myself to start taking apart the fual pump to see what kind of filters I can find.
Good luck and don't be scared!
