Yamaha WR450F(R) Owner's Service Manual page 192

COOLANT REPLACEMENT
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3 - 7
9. Fill:
Radiator
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Engine
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To specified level.
Recommended coolant:
High quality ethylene glycol
anti-freeze containing
anti-corrosion for
aluminum engine
Coolant 1 and water
(soft water) 2 mixing ratio:
50%/50%
Coolant capacity:
1.25 L (1.10 Imp qt, 1.32 US qt)
CAUTION:
Do not mix more than one type of ethyl-
ene glycol antifreeze containing corro-
sion inhibitors for aluminum engine.
Do not use water containing impurities or oil.
Handling notes of coolant:
The coolant is harmful so it should be han-
dled with special care.
WARNING
When coolant splashes to your eye.
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Thoroughly wash your eye with water
and see your doctor.
When coolant splashes to your clothes.
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Quickly wash it away with water and
then with soap.
When coolant is swallowed.
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Quickly make him vomit and take him
to a doctor.
10. Install:
Radiator cap
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11. Fill:
Coolant reservoir tank
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Midway a between maximum and min-
imum marks on the tank.
INSP
ADJ