- Fuel Supply System Zenith 267
- Idle Circuit Zenith 267
- High Speed Circuit Zenith 267
- Economizer System Zenith 267
- Choke System Zenith 267
- Exploded View Zenith 267
The Zenith 267 carburetor is a 1 barrel updraft type of carburetor. They are made with a selective fuel inlet, with or without a back suction economizer and a main jet adjustment.
The fuel bowl is designed so that the carburetor can be used at extreme angles without flooding or starving.
The mounting bolt pattern on the Zenith 267 can vary a bit. 2 3/8" and 2 11/16"
The information below illustrates each circuit in the Zenith 267 carburetor. This can help when diagnosing any problems you may be having.
What Does The Drain Plug Do On the Bottom
Fuel Bowl Drain Plug On versions without the adjustable needle, the fitting is simply a Drain Plug (or Drain Boss). Purpose: Because the 267 is an updraft carburetor, gasoline condensation can accumulate in the intake manifold and drain back into the carb. The drain at the bottom allows you to clear out this accumulated fuel or any water/debris that has settled at the bottom of the bowl. Service Tip: Be careful not to overtighten this. The threads in the die-cast bowl are notorious for stripping, which is why some guys end up having to tap them out to a larger 1/2-20 size.
