Yamaha YZF-R1S Service Manual - Cool
6-3
RADIATOR
COOL
NOTE:
EAS00455
CHECKING THE RADIATOR
1. Check:
Sradiator fins
Obstruction
! Clean.
Apply compressed air to the rear of the radia-
tor.
Damage
! Repair or replace.
Straighten any flattened fins with a thin, flat-
head screwdriver.
2. Check:
Sradiator hoses
Sradiator pipes
Cracks / damage
! Replace.
3. Measure:
Sradiator cap opening pressure
Below the specified pressure
! Replace the
radiator cap.
Radiator cap opening pressure
108
X 137 kPa
(1.08
X 1.37 kg/cm
2
,
1.0
X 1.3 bar, 15.6 X 19.9 psi)
a. Install the radiator cap tester
1
and radiator
cap tester adapter
2
to the radiator cap
3
.
Radiator cap tester
90890-01325, YU-24460-01
Radiator cap tester adapter
90890-01352, YU-33984
b. Apply the specified pressure for ten seconds
and make sure there is no drop in pressure.
4. Check:
Sradiator fan
Damage
! Replace.
Malfunction
! Check and repair.
Refer to “COOLING SYSTEM” in chapter 8.