Engine description 2.4 Fuel circuit 1. Fuel tank 2. min. distance 500 mm 3. Fuel supply line from tank 4. Hand pump for venting 5. Fuel prefilter (example) 6. Fuel supply pump 7. Fuel double filter 8. Fuel supply line to the injection pumps 9. Injection pump 10.High pressure pipe 11.Injector 12.Fuel supply to the injection pumps 13.Fuel return from the injection pumps 14Pressurestat 15Fuel return to the fuel tank 2 Example: Fuel diagram 12