2005-2006 Honda ATV TRX500FE/FM/TM FourTrax Foreman Factory Service Manual, Page 361Get this manual
BATTERYCHARGING SYSTEM CHARGING VOLTAGE INSPECTION Be sure that the battery is in good condition before performing this testStart the engine and warm it up to the operating temperature; stop the engineConnect the multimeter between the positive and negative terminals of the batteryNOTE: To prevent short, make absolutely certain which are the positive and negative terminals or cableWith the headlight on Hi beam, restart the engineMeasure the voltage on the multimeter when the engine runs at 5,000 rpm (min )STANDARD: Measured BV (page 18-5)Measured CV15.5 BVBattery voltage CV= Charging voltage
ALTERNATOR CHARGING COIL
INSPECTION
Disconnect the alternator 5P natural connectorMeasure the resistance between the Yellow wire terminals of the alternator side connectorSTANDARD: 0.11.0 (20C68F) Check for continuity between each Yellow wire terminal of the alternator side connector and groundThere should be no continuityReplace the alternator stator if resistance is out of specification, or if any wire has continuity to groundSee page 11-7 for alternator stator replacementALTERNATOR 5P NATURAL CONNECTOR