The life of a motorcycle carburetor can vary depending on several factors, including the make and model of the motorcycle, the quality of the carburetor, and how well it is maintained. On average, a well-maintained carburetor can last anywhere from 20,000 to 100,000 miles (32,000 to 160,000 kilometers).
Over time, the carburetor may develop issues such as clogged jets or deteriorating gaskets, which can affect its performance. Regular maintenance, including cleaning and adjustment, can help extend the life of the carburetor and keep it running smoothly.
It's also worth mentioning that with the advent of fuel injection systems, many modern motorcycles are equipped with electronic fuel injection instead of carburetors. These systems offer improved fuel efficiency and performance, and they generally require less maintenance.