What does adjusting float height do?

This is the measuring point for the specified float height. If the floats are not at the right height, the tang on the floats should be bent toward the needle valve for less fuel to be allowed in (the bike runs leaner) or, conversely, away from the valve to increase the fuel level (bike runs richer).

What is carburetor float height?

Float height controls the level at which fuel flow into the bowl is activated and deactivated. Set it too low and you can starve the bike for fuel, set it too high and you can have an overflow problem. I agree mostly. but float height does factor into carb jetting.

Where do you measure float height?

The distance to measure is typically measured from the float chamber face – or gasket surface – to the highest point of the floats. If the floats are not at the proper height, most floats have a smakll tang that contacts the float needle which can be bent gently to adjust.

Does backfire mean rich or lean?

Not only can a rich air/fuel ratio cause a backfire, a mixture that doesn’t have enough gasoline can cause a backfire, too. A “lean” mixture is one that doesn’t have enough fuel, and too much air.

How much does a Stromberg float weigh?

Wait, it gets worse. The “standard” weight of the Stromberg float according to “factory data” is 40.0 grams. I get floats in all the time weighing as much as 46 to 47 grams and as little as 34 to 35 grams. Now, it is not rocket science to realize that a heavier float will sink in liquid more than a light weight float.

What kind of float does a Stromberg NA-S2 CARB have?

The Stromberg NA-S2 & 3 carbs use a robust little float made of brass. This carb is considered by most folks to be “dirt” simple in design and, therefore, super simple to overhaul.

How do you adjust float drop on a Stromberg carburetor?

Float drop is set in a Stromberg in a very unusual manner unlike most conventional carburetors which are adjusted with a “bendable” tab somewhere on the float arm. The Stromberg uses 4 different sized fiber washers stacked under the brass seat to get the proper float level.

What size fiber washer does the Stromberg use?

The Stromberg uses 4 different sized fiber washers stacked under the brass seat to get the proper float level. They come in thicknesses of .015”, .030”, .046” and .060” of which ONLY 2 can be used in combination to attain float level.