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Строительство COOLING SYSTEM 4-9 Coolant
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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).

• Remove the left lower fairing (see Lower Fairing Removal in the Frame chapter).

• Remove the radiator cap, and install a cooling system pressure tester [A] on the radiator filler neck.

О 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).

• 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 cylinder liner O-rings.

• Remove the pressure tester, replenish the coolant, and install the radiator cap.


Over a period of time, the cooling system accumulates rust, scale, and lime in the water jacket and radiator. When this accumulation is suspected or observed, flush the cool­ing system. If this accumulation is not removed, it will clog up the water passages and considerably reduce the effi­ciency of the cooling system.

• Drain the cooling system.

• Fill the cooling system with fresh water mixed with a flush­ing compound.