Yamaha F400A 2022 - Page 72

Fuel system
2-44
1. Fuel tank
2. Primer pump
3. Fuel filter (water separator)
4. Low-pressure fuel pump
5. Feed valve
6. Relief valve
7. Vapor separator
8. Venturi
9. High-pressure fuel pump (sub)
10. High-pressure fuel pump (main)
11. Check valve
12. Fuel pressure sensor (high-pressure fuel
pump)
13. Fuel strainer
14. Direct injection pump (PORT)
15. Fuel rail (PORT)
16. Fuel pressure sensor (direct injection
pump) (PORT)
17. Direct injection pump (STBD)
18. Fuel rail (STBD)
19. Fuel pressure sensor (direct injection
pump) (STBD)
20. Fuel injector
21. Combustion chamber
22. Intake silencer
23. ETV
24. Surge tank
25. Intake port (STBD)
26. Intake port (PORT)
27. Intake air pressure/temperature sensor
A. Fuel flow
B. Vapor gas flow
C. Air flow