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Yamaha WR450F 2021 - Page 282

Yamaha WR450F 2021
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RADIATOR
6-5
4. Activate the tester to apply the test pressure.
NOTICE
ECA24270
Do not apply such a high pressure as ex-
ceeds the test pressure.
Make sure that a checkup after the cylinder
head gasket is replaced is made after 3 min-
utes of warm-up.
Make sure that coolant is filled up to the up-
per level beforehand.
5. Check:
Pressure value
No stay for 5 to 10 seconds at the test pres-
sure value Correct.
Radiator
Radiator hose connection
Coolant leaks Correct or replace.
Radiator hose
Bulges Replace.
WARNING
EWA19090
When the radiator cap tester is removed,
coolant will spout; therefore, cover it with a
cloth beforehand.
Test pressure value
137.3 kPa (1.37 kgf/cm², 19.9 psi)

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