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The float level is a critical part of any carburetor calibration. Varying the level of fuel in the bowl will change the point at which the main circuit starts to feed, alter the characteristics of an emulsion tube, and affects both driveability and fuel consumption. Follow these general instructions for float leveling.
Float level, expressed in mm, generally refers to the distance of the float from the face of the carburetor cover. When the top cover is held vertical with the float pivot at the top and the float tab (Lc) resting, against, but not compressing, the spring-loaded ball in the needle valve, measurement is made between the top or bottom of the float to the face of the top cover. On carburetors where it is necessary to remove the float in order to replace the top-cover gasket, the measurement should be made to the gasket face, with the gasket in place.
To adjust the float level, tab (Lc) should be carefully bent until the required dimension is achieved. Float stroke is the dimension from the top cover to the top or bottom of the float when the float is at the bottom of its travel. Adjust this dimension by bending tab (A).
DGV Series w/Brass Float
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DGV Series w/Plastic Float
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IDF Series
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DCOE Series (measure w/gasket in place)
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DCNF Series
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