How to test fuel level sensor on 3206?

I just got a 3206 that seems to be in pretty good shape.

I have done a good bit of disassembly and cleaning and noticed that someone has removed the bulb to the low fuel gauge.

I pulled the tank to clean out that area and thought before I put it back together that I would test the fuel sensor.

I checked for resistance and it shows continuity with the float up or down.

How would I determine it it is functioning properly before I install it back in the tank and reassemble the tractor?