How much horsepower is in a 420 cc engine?

A 420 cc engine typically produces around 14 to 20 horsepower, depending on the engine's design, tuning, and application. For example, small engines used in lawn mowers or generators may be on the lower end of that range, while those designed for higher performance applications could achieve higher output. It's important to refer to the manufacturer's specifications for the most accurate horsepower rating.