gregory bender
http://www.thisoldtractor.com/gtbender
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: Dell’Orto carburetor float height values
| Carburettor | Float height, millimeters |
|---|---|
| PHBG | 16 +/- 0.5 |
| PHBL | 24 +/- 0.5 |
| PHBH | 24 +/- 0.5 |
| PHBE | 18 +/- 0.5 |
| PHF | 18 +/- 0.5 |
| PHM | 18 +/- 0.5 |
| VHB/Z/T | 24 +/- 0.5 |
| PHSB* | 11 +/- 0.5 |
| VHSA* | 11 +/- 0.5 |
| VHSB* | 11 +/- 0.5 |
| * PHSB/VHSA/VHSB one piece float assembly. | |
Thanks to Charlie Mullendore of Antietam Classic Cycyle who posted this information on the Yahoo! Loopframe_Guzzi news group.
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.

Figure 13: setting the float on carburetors with connected floats

Figure 14: setting the float on carburetors with independent parts