Yamaha WR426F(N) Owner's Service Manual page 250

COOLING SYSTEM INSPECTION
EC357002
COOLING SYSTEM INSPECTION
NOTE:
3 - 9
3. Inspect:
Pressure
Impossible to maintain the specified
pressure for 10 seconds
1. Inspect:
Coolant level
2. Attach:
Radiator cap tester 1 and adapter 2
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
Impossible to maintain the specified
pressure for 10 seconds
Radiator
Radiator hose joint
Coolant leakage
Radiator hose
Swelling Replace.
INSP
ADJ
Replace.
2
, 25.6 psi)
Repair.
Repair or replace.