Yamaha YZ426F(M)/LC Owner's Service Manual page 156

RADIATOR CAP OPENING PRESSURE INSPECTION/
COOLING SYSTEM INSPECTION
EC356001
RADIATOR CAP OPENING PRESSURE
INSPECTION
NOTE:
Apply water on the radiator cap seal.
3 Radiator cap
EC357002
COOLING SYSTEM INSPECTION
3 - 8
1. Attach:
Radiator cap tester 1 and adapter 2
Radiator cap tester:
YU-24460-1/90890-01325
Adapter:
YU-33984/90890-01352
2. Apply the specified pressure.
Radiator cap opening pressure:
110 kPa (1.1 kg/cm
3. Inspect:
Pressure
Impossible to maintain the specified
pressure for 10 seconds → Replace.
1. Inspect:
Coolant level
2. Attach:
Radiator cap tester 1 and adapter 2
Radiator cap tester:
YU-24460-1/90890-01325
Adapter:
YU-33984/90890-01352
3. Apply the specified pressure.
Standard pressure:
180 kPa (1.8 kg/cm
INSP
ADJ
2
, 15.6 psi)
2
, 25.6 psi)