2005-2006 Honda ATV TRX500FE/FM/TM FourTrax Foreman Factory Service Manual, Page 394Get this manual
LIGHTSMETERSSWITCHES
FUEL GAUGEFUEL LEVEL SENSOR (Except ACM type TM model)
SYSTEM INSPECTION
Check that the speedometer and indicators function properly If they do not function, check the powerground line (page 21-12) If they function, check as follows: Remove the front fender (page 3-9)Disconnect the fuel level sensor 2P red connector
Turn the ignition switch to ON and check the fuel gaugeAll segments should blinkTurn the ignition switch to OFFConnect the wire harness side connector terminals with jumper wireTurn the ignition switch to ON and check the fuel gaugeAll segments should blinkIf the fuel gauge does not function properly, replace the combination meter (page 21-12)Turn the ignition switch to OFFConnect the fuel level sensor 2P red connectorRemove the fuel tank cover (page 3-5)Remove the three bolts, fuel level sensor and O-ring from the fuel tankFUEL LEVEL SENSOR O-RING