float adjustment

[old_skool]

4. Turn the carburetor assembly upside down.
Measure the distance from the bottom of the
float to the float bowl gasket surface. See
figure 33. The correct height is 1.012 ± 0.04
in. (25.7 ± 1.0mm).
6. Adjust by carefully bending the tang on the
float arm (Figure 33).
NOTE; Both floats within the same carburetor must be at the same hieght.
CAUTION
The floats in all 4 carburetors must be adjusted to exactly the same hieght to maintain the same fuel/air mixture to all 4 cylinders.
7. If the floal level is set too high, the result
will be a rich fuel/air mixture. If it is set too
low, the mixture will be too lean.

quote from manual

Ok. 2 questions, is there a second measurement for the other tang, and second, how can you adjust a float to create too rich a condition, unless its not shutting off and continually dumping fuel down its throat, the float doesn't determine how much fuel is being used, but making sure enough is available....and too shut off from overflowing

[DAVINCI]

1. Haven't seen any published measurement for float DROP, but set the tang so the needle won't cock in the valve body, that float would have too much drop. The float only needs enough drop to allow fuel to enter the bowl (not much)

2. If the float is adjusted too high (in the upright position), the fuel will be too high in the bowl, causing a rich condition.

[DGXSER]

First question, if you mean the tang that adjust how far the float drops, there is no stated setting that I have seen.

As to your second question, adjusting the height of the float does adjust the height of the fuel in the bowl. This will change the distance from the pool of fuel to the main jet and the pilot jet. This change in distance changes the amount of vacuum required to lift a given amount of fuel through the jets into the air fuel mixture that enters the engine.

Given the same amount of vacuum, a higher float level (smaller distance from the gasket surface to the top of the float) and therfore a shorter distance form the fuel to the jet, will increase the amount of fuel that is sucked into the mixture , a richer mixture. Of course, a lower float level (greater distance from the gasket surface to the top of the float) will cause a reverse effect and a leaner mixture.

[old_skool]

makes sense, thanks

[mack]

beware grasshopper

the measurement you quoted was for the brass floats. If you are switching to the crap plastic ones, the starting measurement is 22.5 mm

[old_skool]

nope....got brass and keeping-em