Coolant deterioration inspection
Visually inspect the coolant in the reserve tank.
★ If whitish cotton-like wafts are observed, aluminum parts in the cooling system are corroded. If the coolant is brown, iron or steel parts are rusting. In either case, flush the cooling system.
★ If the coolant gives off an abnormal smell, check for a cooling system leak. It may be caused by exhaust gas leaking into the cooling system.
Coolant level inspection
Refer to the Coolant level inspection in the Periodic Maintenance chapter.
Coolant draining
Refer to the Coolant change in the Periodic Maintenance chapter.
Coolant filling
Refer to the Coolant change in the Periodic Maintenance chapter.
Pressure testing
Remove the fuel tank (see Fuel tank removal in the Fuel System (DFI) chapter).
Remove the radiator cap, and install a cooling system pressure tester [A] on the filler neck.
![](https://motoinstruction.ru/img/kawasaki/13/118903.jpg)
Note. Wet the cap sealing surfaces with water or coolant to prevent pressure leaks.
Build up pressure in the system carefully until the pressure reaches 123 kPa (1.25 kgf/cm², 18 psi).
Caution! During pressure testing, do not exceed the pressure for which the system is designed. The maximum pressure is 123 kPa (1.25 kgf/cm², 18 psi).
Watch the gauge for at least 6 seconds.
★ If the pressure holds steady, the system is all right.
★ If the pressure drops and no external source is found, check for internal leaks. Droplets in the engine oil indicate internal leakage. Check the cylinder head gasket and the water pump.
Remove the pressure tester, replenish the coolant, and install the radiator cap.