I don't believe we have any water in the fuel tank we keep it full and we have very rare temperature swings and mostly low humidity--too low to count really in the Phoenix area. As you can tell from the picture, there is no evidence of any rust at the bottom of the filter.
I would like to clean it out. If I unscrewed it to do that, should I be concerned that the fuel would continue to gravity feed from the tank during the open connection? If so, is there an effective way to shut it off or cap the inlet? Also should the filter be topped off before reinstalling?
Tips on how to do this would be appreciated.