Yamaha WR450F(S) Owner's Service Manual page 196

COOLING SYSTEM INSPECTION
EC357002
COOLING SYSTEM INSPECTION
NOTE:
G
G
3 - 9
3. Inspect:
Pressure
G
Impossible to maintain the specified
pressure for 10 seconds → Replace.
1. Inspect:
Coolant level
G
2. Attach:
Radiator cap tester 1 and adapter 2
G
Radiator cap tester:
YU-24460-01/90890-01325
Adapter:
YU-33984/90890-01352
3. Apply the specified pressure.
Standard pressure:
180 kPa (1.8 kg/cm
Do not apply pressure more than specified
pressure.
Radiator should be filled fully.
4. Inspect:
Pressure
G
Impossible to maintain the specified
pressure for 10 seconds → Repair.
Radiator
G
Radiator hose joint
G
Coolant leakage → Repair or replace.
Radiator hose
G
Swelling → Replace.
INSP
ADJ
2
, 25.6 psi)