Evaporative emissions control system including a charcoal canister for small internal combustion engines

An evaporative emissions control system for small internal combustion engines (28), including a charcoal canister (70) which is in fluid communication with the air space above the liquid fuel within the carburetor (36) of the engine and the air space above the liquid fuel within the fuel tank (32) of the engine. The charcoal canister contains charcoal media (84), and when the engine is not running, fuel vapors from the carburetor and the fuel tank migrate to, and are trapped within, the charcoal media of the charcoal canister. The charcoal canister may comprise a separate component, or may be integrally formed with an engine component such as the air cleaner (54), the carburetor, or the fuel tank cap (130 or body (58) of the fuel tank, for example. During running of the engine, vacuum within the carburetor induces a flow of atmospheric air through the charcoal canister to purge the collected fuel vapors from the charcoal media, and the fuel vapors pass into the engine for consumption.