2008 Arctic Cat 400/500/650/700 ATV Service Manual, Page 330Get this manual
3Disconnect the hose from the fuel pump to the carburetorthrottle body4Remove the cap screws securing the gas tank to the frame5Disconnect the fuel gauge connector; then remove the gas tankCLEANING AND INSPECTING NOTE: Whenever part is worn excessively, cracked, or damaged in any way, replacement is necessary
4Remove the fuel level sensorfuel pick-up assembly and inspect the fuel level sensor and fuel screenNOTE: If the fuel level sensor has failed or may be faulty, see Electric Fuel PumpFuel Level Sensor (EFI Models) in this section