Deadhead the pump. Block the outlet port with a gauge. Loosen the jam nut (1) in the diagram and adjust the adjuster (2) in the diagram until the gauge reads what you want. Mallory says between 13-20 psi View attachment 1716003809
So what do you think? I would say that I'm only going to run probably four and a half or five on my regulator. Going to the two Carter competition series carburetors.. What should I set the bypass for on the Mallory 250 to be safe
