Checking The Radiator; Installing The Radiator - Yamaha YZF-R125 Service Manual

YamahaR125.COM
EAS26390

CHECKING THE RADIATOR

1. Check:
• Radiator fins
Obstruction → Clean.
Apply compressed air to the rear of the radia-
tor.
Damage → Repair or replace.
NOTE:
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 (15.6–19.9 psi)
(1.08–1.37 kgf/cm²)
M MMM M MMM M M MMM M
a. Install the radiator cap tester "1" and radiator
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
M MMM M M MMM M M MMM M
b. Apply the specified pressure for ten seconds
and make sure there is no drop in pressure.
L LLL L LLL L
4. Check:
• Radiator fan
Damage → Replace.
Malfunction → Check and repair.
Refer to "COOLING SYSTEM" on page 8-25.
EAS26400

INSTALLING THE RADIATOR

1. Fill:
• Cooling system
(with the specified amount of the recom-
mended coolant)
Refer to "CHANGING THE COOLANT" on
page 3-15.
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.
MMM
Refer to "CHECKING THE RADIATOR" on
page 6-3.
6-3
RADIATOR
L LLL L L LLL L L LLL L L LLL L LLL