2006 Honda TRX680 Rincon Factory Service Manual, Page 547Get this manual
LIGHTSMETERSSWITCHES Turn the ignition switch ON and check the fuel gaugeAll segments should blinkTurn the ignition switch OFFConnect the meter side connector terminals with jumper wireTurn the ignition switch ON and check the fuel gaugeAll segments should blinkIf the fuel gauge does not function properly, replace the combination meter (page 23-9)Turn the ignition switch OFFRemove the fuel tank cover (page 3-5)Remove the three bolts, retaining plate and fuel level sensor from the fuel tankFA model: FGA model: