The O.S. Max 1.60 FX does not have an air-bleed type of carburetor. It has one with full high-speed and idle mixture adjustments.

As far as a pump is concerned, we'd have no specific recommendations. There are several different pump and pressure/regulator systems on the market that all work well with a wide variety of engines. A search through the RCU glow engines forum would give you a better idea than we can, here.