FAQ: What Is Zenith Model 288 Carburetor Float Level?

Should carburetor float be level?

You want to set the float height so your bike runs on the properly metered amount of fuel it needs. If the floats are set too high, fuel will overflow via overflow ports that are drilled into the carb body. Another dangerous issue caused by fuel leaking from a carb- fire!

What is carburetor float height?

Once the fuel is turned on, fuel flows up the pipe until the needle valve assembly closes the supply; the fuel height in the tube corresponds to the fuel height inside the float chamber.

How do you measure a carburetor float?

Turn the carburetor upside down so that you are looking at the float from the bottom. With the float seated flat against the needle valve, use your fuel level gauge and measure from the bottom of the float to the mating edge or bottom of the existing reservoir bowl with the bottom off.

How do I know if my carburetor float is stuck?

One of the signs that the carburetor float is sticking is when the engine will not idle. The float is not letting enough fuel into the reservoir, allowing for a constant idle of the engine. The carburetor float is stuck in the closed position, and only a small amount of fuel is seeping into the reservoir.

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How do you tell if a carburetor is rich or lean?

Typical symptoms of a rich mixture are:

  1. Poor fuel economy.
  2. Sluggish acceleration.
  3. Choke not needed from cold starts.
  4. Sooty or black spark plugs.
  5. Sooty or black muffler end pipes.
  6. Strong smell of gasoline when the machine is at idle.
  7. Uneven running (will often slow from regular idle rpms and then stop)

How do I identify my Zenith carburetor?

Zenith carburetor produced after about 1980 will not have the round tag, but will have a tiny number stamped (never raised) in a semi-circle on the body of the carburetor. Some Zenith carburetors produced in the 1920’s up to about 1935 have a long thin rectangular tag with the Zenith number stamped.

How do you adjust a zenith Bendix carburetor?

Initial settings for the carburetor are as follows. Open the idle adjustment needle one full turn open or out from fully closed. This needle is on top of the carburetor closest to the engine. Now, adjust the main jet or high speed adjustment out approximately four full turns open or out.

How does a Zenith carburetor work?

The Zenith carburetor, which was used on the Model A, is an updraft. The float chamber of the carburetor stores a small amount of gasoline, which is gravity-fed from the Model A fuel tank. The higher air pressure in the float chamber then forces gasoline through the jets into the Venturi.

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