Dellorto PHBH Carburetors Explained

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A brief description of how a Dellorto PHBH carburetor works. This used two PHBH 28s I had bought to rebuild for my Moto Morini 501XE Camel. Not all PHBH series carburetors are identical, but it's a simple carburetor design and pretty easy to understand when you look at it.

[@steveholbrook6723]

Think you may have the idle and mixture screw mixed up. The idle screw is the more central one with the large spring.

[@dex1257]

Hello. Quick question.I have dellorto phbh bs 28 mm and dellorto phbh bd 28mm. Can i put the float from phbh bs to my phbh bd 28mm. I read on internet that the bs has 6.5g float but bd has 9.5g float. Thanks

[@TedsGarage]

Unfortunately I'm not sure, I really only know the carbs I have. It ought to fit, but keep in mind that if you put in different parts it will change the fuel flow characteristics.

[@dex1257]

@@TedsGarage Many thanks!