10 year old fuel in tank trying anything t get line cleaned out inside any ideas or tips. It's on a 1978 subaru wagon 1600 I dont want to remove the tank

There looks to be a plug on the bottom of the Tank and does anyone know where to get a fuel level sender seal

I fought my Brat for a year changing fuel filters by the dozen. Save yourself the aggravation drop the tank and clean it out. Search SubaRude for my thread on Brat.  

Yeah , I'm even doing the tank drop n clean soon on our 92 legacy just because it sat for about 10 years before some kid tried to own it this past fall. It runs fine about 1/2 tank.

 

Pain in the butt , just have to reserve a day and do it. And it'll give you a better eye on your fuel lines too. While the tank is down do all you can for preservation or replacement.

 

Good luck. Be safe.