I have a Simplicity 3312H manual lift garden tractor I'm trying to get running for spring. I'm pretty the issue is with the carburator as the engine runs fine on starter fluid, but it refuses to pull any gas from the tank. I checked some blow out diagrams that show there should be a gas shut off valve somewhere along the gas line but this is missing, i assume because the gas tank has been replaced at some point. Carb will be taken off this weekend to check how clogged it is. Far as i can tell from googling the engine should be a Briggs 300421.
Any advice? inb4 buy new carb