engine coolant YAMAHA GRIZZLY 660 2003 User Guide
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12. Install the radiator cap.
13. Start the engine and let it idle for several min-
utes. Stop the engine, and then check the
coolant level in the radiator. If it is low, add
more coolant until it reaches the top of the ra-
diator.
14. Fill the coolant reservoir with coolant up to
the maximum level.
15. Install the coolant reservoir cap and check for
coolant leakage.NOTE:_ If any leakage is found, ask a Yamaha dealer to in-
spect the cooling system. _16. Install the panels and the front carrier.
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Engine overheatingNOTE:If it is difficult to get the recommended coolant, tap water can be temporarily used, provided that it is
changed to the recommended coolant as soon as possible.
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 
engine has cooled.
Check the coolant level in the 
reservoir tank and/or radiator.
Level is OK.Level is low, check the 
cooling system for leakage.
No 
leakage.Leakage.
Ask a Yamaha dealer to inspect 
and repair the cooling system.Add coolant. (See NOTE.)
Restart the engine. If the engine overheats again, ask a 
Yamaha dealer to inspect and/or repair the cooling system.
U5KM60.book  Page 138  Thursday, June 21, 2001  2:40 PM