Setting the float height on Dellorto carburetors

Detailed technical information regarding Dellorto motorcycle carburetors, how to tune Dellorto motorcycle carburetors, Dellorto parts diagrams, slide specifications, needle specifications, jet specifications, and atomizer specifications.

Updated: 2009 April 29

This information was gleaned from Eurocarb.

Whenever the float or float-arm position does not correspond to the proper specified level setting or is not parallel to the float chamber face, bend the float arms carefully to set the correct position.

Table: Dellorto carburetor float height values

• For connected floats, hold the carburetor body in the position shown in fig. 13 and check that the float is at the correct distance from the carburetor body face as specified in the table.
• For the floats with independent parts, hold the carburetor upside down (fig. 14) and check that the float arm is parallel to the carburetor face.

What is the difference between connected floats with floats with independent parts?

Thanks to Charlie Mullendore of Antietam Classic Cycle who posted this information on the old Yahoo! Loopframe_Guzzi news group (which has now moved to Groups.io).

My take on it is:

• Independent floats slide up and down on a steel pins and aren't connected in any way. There are two floats and one common central V or U shaped metal piece that act upon that controls the needle.
• Connected is two floats attached to a common central V or U shaped metal piece. This is the type VHBs use.