Yamaha YXR7FD Owner's Manual page 176

Engine overheating
Wait for the engine to cool before removing the radiator cap. WARNING! If the engine is not
cool when removing the radiator cap, hot fluid and steam could blow out under pressure
and burn you. Place a thick rag over the cap and remove the cap slowly to allow any remaining
pressure to escape.
Wait until the Check the coolant level in the
engine has cooled. coolant reservoir and/or radiator.
If it is difficult to get the recommended coolant, tap water can be used temporarily, provided that
it is changed to the recommended coolant as soon as possible.
Level is low, check the
cooling system for leakage.
Restart the engine. If the engine overheats again, ask a
Level is OK.
Yamaha dealer to inspect and/or repair the cooling system.
8-63
Ask a Yamaha dealer to inspect
Leakage.
and repair the cooling system.
No
Add coolant. (See the text below.)
leakage.