Yes, you can solder the float, but you have to get the float dried out first. Then be very careful with the solder, or you will change the weight of the float. You could take the float apart if you want to, and dry it out. Then tin the seams with fresh solder and melt the solder to seal the seams without adding any solder during the process. Use a fairly low-wattage electric iron or you may destroy the float with too much heat. A 9- or 15-watt iron is probably too small, but a propane torch is too much.

Harvester