2012 Sportsman 400/500 and EFI Tractor Service Manual 9923412, Page 150Get this manual
500 EFI FUEL SYSTEM 9Fuel InjectorLocated on the intake track, near the spark plug10Fuel RailLocated above the intake track, near the fuel injector and spark plug7 6
11Fuel FilterLocated in the fuel tank on the fuel pump asm12Fuel PumpRegulatorGauge Sender AssemblyLocated in the fuel tank