The Genuine Buddy 125 EEC system diagram shows the complete evaporative emissions control system, including the charcoal canister, EVAP hoses, vent lines, purge connections, pressure valve, hose clips, and related mounting hardware. This diagram is used to identify OEM replacement parts for emissions system service, fuel vapor recovery repairs, and hose routing maintenance.
The EEC system is designed to capture and control fuel vapors from the fuel tank, reducing emissions by routing them through a charcoal canister before they are safely reintroduced into the intake system. It also uses vacuum and vent lines to regulate pressure within the fuel system. Common repairs include replacing cracked or disconnected EVAP hoses that cause fuel odor or running issues, servicing a saturated or damaged charcoal canister, repairing broken clips or fittings that lead to vacuum leaks, and correcting improper hose routing that can affect idle quality and emissions performance.