Yamaha 2012 Grizzly 300 Service Manual page 192

RADIATOR
EBS00127
CHECKING THE RADIATOR
1. Check:
• radiator fins
Obstruction → Clean.
Apply compressed air to the rear of the radi-
ator.
Damage → Repair or replace.
TIP
Straighten any flattened fins with a thin, flat-
head screwdriver.
2. Check:
• radiator hoses
Cracks/damage → Replace.
3. Measure:
• radiator cap opening pressure
Below the specified pressure → Replace
the radiator cap.
Radiator cap opening pressure
107.9 ~ 137.3 kPa
(1.079 ~ 1.373 kg/cm
15.35 ~ 19.53 psi)
a. Install the radiator cap tester
cap tester adapter
Radiator cap tester
P/N. YU-24460-01, 90890-01325
Radiator cap tester adapter
P/N. YU-33984, 90890-01352
b. Apply the specified pressure for ten sec-
onds and make sure there is no drop in
pressure.
4. Check:
• radiator fan
Damage → Replace.
Malfunction → Check and repair.
Refer to "COOLING SYSTEM" in chapter 8.
5-2
COOL
2 ,
and radiator
1
to the radiator cap .
2 3