Yamaha FZ1-N Service Manual page 295

EAS26390
CHECKING THE RADIATOR
1. Check:
• Radiator fins
Obstruction → Clean.
Apply compressed air to the rear of the
radiator.
Damage → Repair or replace.
NOTE:
Straighten any flattened fins with a thin, flat-
head screwdriver.
2. Check:
• Radiator hoses
• Radiator pipes
Cracks/damage → Replace.
3. Measure:
• Radiator cap opening pressure
Below the specified pressure → Replace
the radiator cap.
Radiator cap opening pressure
93.3 - 122.7 kPa
(0.93 - 1.23 kg/cm
bar, 13.5 - 17.8 psi)
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a. Install the radiator cap tester "1" and radia-
tor cap tester adapter "2" to the radiator
cap "3".
Radiator cap tester
90890-01325
Radiator pressure tester
YU-24460-01
Radiator cap tester adapter
90890-01352
Radiator pressure tester
adapter
YU-33984
2
, 0.9 - 1.2
6-3
b. Apply the specified pressure for ten sec-
onds and make sure there is no drop in
pressure.
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4. Check:
• Radiator fan
Damage → Replace.
Malfunction → Check and repair.
Refer to "RADIATOR" on page 6-1.
EAS26400
INSTALLING THE RADIATOR
1. Fill:
• Cooling system
(with the specified amount of the recom-
mended coolant)
Refer to "CHANGING THE COOLANT" on
page 3-19.
2. Check:
• Cooling system
Leaks → Repair or replace any faulty part.
3. Measure:
• Radiator cap opening pressure
Below the specified pressure → Replace
the radiator cap.
Refer to "CHECKING THE RADIATOR" on
page 6-3.
RADIATOR