Yamaha GRIZZLY YFM70GPAN Owner's Manual page 161

Engine overheating
EWB02291
WARNING
Wait for the engine and radiator to cool before removing the radiator cap. You could be burned by
hot fluid and steam blown out under pressure. Always put a thick rag over the cap when opening.
Allow any remaining pressure to escape before completely removing the cap.
Wait until the Check the coolant level in the
engine has cooled. reservoir and radiator.
TIP
 Tap water can be used in an emergency. Change to the recommended coolant as soon as possible.
 The engine will tend to overheat if the radiator is caked with mud, or if the ATV is overloaded.
The coolant level is low.
Check the cooling system
for leakage.
Start the engine. If the engine overheats again, have a
The coolant level
Yamaha dealer check and repair the cooling system.
is OK.
9-65
There is
Have a Yamaha dealer check
leakage.
and repair the cooling system.
There is
Add coolant. (See TIP.)
no leakage.
9