Honda FourTrax Rancher TRX420FE1 2019 Owner's Manual page 32

Indicators & Displays
If there is a fuel warning with your ATV, the display will automatically
change to the fuel gauge.
If you try to change the display back to ordinary display, it will
automatically return to the fuel gauge.
If there is a coolant temperature warning with your ATV, the display
will automatically change to the coolant temperature gauge. If you
try to change the display back to ordinary display, it will
automatically return to the coolant temperature gauge.
22 Instruments & Controls