Accelerator pump cam selection methanol carb

the 50cc pumps should have the brown cam. set them both up for a quick shot of fuel. keep going up in nozzle size on both until it doesn't bog. don't be afraid of going too big. go up at least 2-3 sizes at a time. make sure the secondary blades aren't hitting the manifold and your throttle cable is adjusted correctly. try leaving off an idle, at 3000rpm the pump shot is used up.