The only filter I know of on one is the tiny strainer on the bottom of the straw in the tank. Certainly it could be plugged. Probably pretty easy to pull it out and check. On mine all of this is exposed right under the rear bulkhead. The in line pump is easy to find and then go from there.
There is a filter on the fuel pump, it's not very big ,smaller than a pencil eraser . It's on the inlet side of the pump