2006-2012 Honda TRX90 TRX90EX/X Service Manual, Page 273Get this manual
ELECTRIC STARTER Connect the starter motor 2P connectorInstall the left crankcase cover (page 16-2)Install the rear fender (page 2-4)
STARTER RELAY SWITCH
OPERATION INSPECTION
Shift the transmission into neutralTurn the ignition switch to ON and push the starter switchThe coil is normal if the starter relay switch clicksIf you don 't hear the switch "CLICK", inspect the relay switch circuits (page 16-14)
CIRCUIT INSPECTION
Disconnect the starter relay switch 2P connectorCheck the connector for loose contacts or corroded terminalsGROUND LINE