Club 80-90 Forums

Hi all

I have my solex 32-34 pdsit carbs on the bench with a complete rebuild kit and I'm nearly there.

I'm having a blonde moment with checking the float level!
I've read ratwells explanation of the rebuild which is excellent but vague regarding how to measure float level.
can't get my head around where to measure the 12-14mm to and from!

Im actually wondering if I have to fill the bowl and measure from the surface of the petrol??!!

Can anyone explain in dummies terms or sketches where to measure to and from??

Arrrrrgh!

thanks for any help in advance!

The float level is preset with a 1mm thick washer under the foat valve.

float level is usually measured from the base of the float to the bowl mating surface

The trick is to hold the carbs as they would normally be positioned, then slowly tilt them until the float just "flops" down. The height should be measured at that exact spot. You may have to do it a couple of times to get that "sweet spot", which should be at the point where the carbs are almost horizontal.

The floats are connected to a valve that feeds petrol to the bowls. Inside that valve is a spring. You want to measure with the little metal tang touching the valve, but not compressing the spring. Measure the distance from the gasket surface to the highest part of the float.

Lower float height / increase the measurement to counter a rich condition.

Raise float height / decrease the measurement to counter a lean condition.