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Dellorto tuning Guide


Dellorto manual


Dellorto Vintage usage list


Dellorto Vintage parts diagrams


Dellorto part numbers



Setting float height on PHF carbs.

With black or Brown floats the tang that holds the float valve needle must be parallel to the float arms

Note how the Post for the pivot rod, the float arm and the flat on the float form three sides of a square with the float arm parallel to the float bowl seat casting.

This picture is as above but with the spring in the float valve depressed. The float valve is shut with the spring uncompressed, the spring allows the float to bob up and down on a bumpy road without affecting the fuel level.

Finally check that both floats are at the same height, this should be 18.5mm for PHF and 17.5mm for PHM

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