This float with the BING replacement part number 35-218-201-00 is a central component for various BING carburetors (often of the types SRE, SRC, SRF, SRA), which are typically used in mopeds, scooters, and small motorcycles from manufacturers such as Puch, Sachs, and Zündapp (e.g., Puch Maxi, Hercules, Zündapp Belmondo).
The float regulates the fuel level in the float chamber of the carburetor. It rises with the gasoline level and controls the inlet valve via the float needle to open or close the flow from the tank.
Conclusion: The float is crucial for the proper mixture preparation and performance of the engine; a defect usually leads to overflowing or insufficient fuel supply.