Honda TRX500FA6 AT Owner's Manual page 48

Indicators & Displays
Reset the maintenance tripmeter/maintenance hour meter after
maintenances.
To reset the maintenance tripmeter/maintenance hour meter,
proceed as follows:
Press and hold the mode select button (5) and turn the ignition
switch (6) to ON (q). The maintenance minder indicator will appear,
then it will blinks twice, and the multi-function display will
temporarily show all the modes and digital segments. The indicator
message will disappear.
Reset operation will be cancelled, if the mode select button is
released before the indicator blinks twice.
If the maintenance is done before the setting interval, be sure to
reset the meters after the maintenance.
(5)
(2) maintenance minder
indicator
38 Instruments & Controls
(6)
(5) mode select button
(6) ignition switch
(2)