Honda TRX420TE Owner's Manual page 206

If the High Coolant Temperature
If the reserve tank is low or empty, don't ride without adding coolant
(page 119 ). After adding coolant, turn the engine on and check the
high coolant temperature indicator.
If the indicator doesn't turn off, do not ride. The engine needs repair.
Transport your ATV to a Honda dealer (page
If the temperature drops to normal, check the coolant level. If it has
gone down, add more coolant.
Check for an oil leak.
Check the oil level. If necessary, add the recommended oil (page
to the upper level mark. If you must leave your ATV to get oil, secure
it as much as possible.
Start the engine, and check that the high coolant temperature indicator
goes off.
If you are able to resume riding, continue to monitor the high coolant
temperature indicator frequently.
If there is an oil leak
Honda dealer (page 176
If there's a mild coolant leak, you can ride for awhile, carefully
watching the indicator. Be prepared to stop and add more coolant or
water. If the leak is bad, transport your ATV to a Honda dealer
(page 176 ).
Indicator Lights
do not ride the ATV until the leak is repaired by
).
Taking Care of the Unexpected
176 ).
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