Radiator inspection
Check the radiator core.
★ If there are obstructions to air flow, remove them.
★ If the corrugated fins [A] are deformed, carefully straighten them.
![](https://motoinstruction.ru/img/kawasaki/13/118923.jpg)
★ If the air passages of the radiator core are blocked more than 20% by unremovable obstructions or irreparably deformed fins, replace the radiator with a new one.
Caution!
- When cleaning the radiator with steam cleaner, be careful of the following to prevent radiator damage. Keep the steam gun [A] away more than 0.5 m (1.6 ft) [B] from the radiator core.
- Hold the steam gun perpendicular to the core surface.
- Run the steam gun following the core fin direction.
![](https://motoinstruction.ru/img/kawasaki/13/118924.jpg)
Radiator cap inspection
Check the condition of the top [A] and bottom [B] valve seals and valve spring [C].
★ If any one of them shows visible damage, replace the cap with a new one.
![](https://motoinstruction.ru/img/kawasaki/13/118925.jpg)
Install the cap [A] on a cooling system pressure tester [B].
Note. Wet the cap sealing surfaces with water or coolant to prevent pressure leaks.
![](https://motoinstruction.ru/img/kawasaki/13/118926.jpg)
Watching the pressure gauge, pump the pressure tester to build up the pressure until the relief valve opens: the gauge hand flicks downward. Stop pumping and measure leak time at once. The relief valve must open within the specified range in the table below and the gauge hand must remain within the same range at least 6 seconds.
Radiator cap relief pressure:
- Standard: 93-123 kPa (0.95-1.25 kgf/cm², 13-18 psi)
★ If the cap cannot hold the specified pressure, or if it holds too much pressure, replace it with a new one.
Radiator filler neck inspection
Remove the radiator cap.
Check the radiator filler neck for signs of damage.
Check the condition of the top and bottom sealing seats [A] in the filler neck. They must be smooth and clean for the radiator cap to function properly.
![](https://motoinstruction.ru/img/kawasaki/13/118927.jpg)