Hello, Almost done fully restauring my 1974 SRV 220 but have had a fuel starvation issue. Anyone have a tank diagram? I had to cut an access hole in the deck over the pick up tube as I'm down to thinking there's either a check valve in the 90 deg connection to the tank, or something partially blocking the pick up tube. Fuel pump is brand new and rebuilt engine runs fine off a portable gas container, but carb goes dry over 1500rpm's under load... All fuel lines replaced, new fuel filter.
