1999-2004 Honda TRX400EX FourTrax Service Manual, Page 223Get this manual
BAlTERYCHARGING SYSTEM
BAlTERY
REMOVALINSTALLATION
With the ignition switch OFF, disconnect the negative (-) cable first, then the positive (+) cableRemove the two bolts, battery holder and battery from the battery boxInstall the battery in the reverse order of removal
Connect the positive (+) cable first, then the negative (-1 cable After connecting the battery cables, coat the terminals with grease
VOLTAGE INSPECTION