2003 Honda ATV TRX650FA Rincon Factory Service Manual, Page 446Get this manual
LIGHTSMETERSSWITCH ES Tu rn he ign iti on switc to "ON" and check th uel
ga ugeA ll segments sho uld blinkTurn th ignition switc "OFF"Co nnect th et er side con nec tor ermi nal it pe ire Turn he ignit ion switc to "ON" and check th ue ga ugeA ll seg me nts ho ld linkIf th fu el ga uge doe not fun cti on properlre pl ace th co inat io et er (pa ge 22-10)
FUEL GAU GE SEGME NTS
Turn he igniti on switc to "OFF"Remove he fu el ank cove (page 2-5)Rem ov he three bo lts, ret aini ng pl at and fu el level senso fr om th fu el ank