Kawasaki KX250F (2004) [117/357] Http manuals magnamaniac com
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Kawasaki KX250F (2004) [117/357] Http manuals magnamaniac com

Kawasaki KX250F (2004) [117/357] Http manuals magnamaniac com
4-8 COOLING SYSTEM
Coolant
Cooling System Pressure Testing
CAUTION
During pressure testing, do not exceed the pres-
sure for which the system is designed to work. The
maximum pressure is 123 kPa (1.25 kgf/cm², 18 psi).
•
Remove the radiator cap, and install a cooling system
pressure tester [A] and adapter [B] on the radiator filler
neck [C].
NOTE
○
Wet the adapter cap sealing surfaces with water or
coolant to prevent pressure leaks.
•
Build up pressure in the system carefully until the pres-
sure reaches 123 kPa (1.25 kgf/cm², 18 psi).
•
Watch the gauge for at least 6 seconds. If t he pressure
holds steady, the cooling system is all right.
•
Remove the pressure tester, replenish the coolant, and
install the radiator cap.
If the pressure drops and no external source is found,
check for internal leaks. Check the cylinder head gasket
for leaks.
Cooling System Flushing
Over a period of time, the cooling system accumulates
rust, scale, and lime in the w ater jacket and radiator. When
this accumulation is suspected or observed, flush the cool-
ing system. If this accumulation is not removed, it will clog
up the water passages and considerably reduce the effi-
ciency of the cooling system.
•
Drain the cooling system.
•
Fill the cooling system with fresh water mixed with a flush-
ing compound.
CAUTION
Avoid the use of a flushing compound which is
harmful to the aluminum engine and radiator.
Carefully follow t he instructions supplied by the
manufacture of the cleaning product.
•
Warm up the engine, and r un it at normal operating tem-
perature for about ten m inutes.
•
Stop the engine, and drain the cooling system after the
coolant cools down.
•
Fill the system with fresh water.
•
Warm up the engine and drain the system after the
coolant cools down.
•
Repeat the previous t wo steps once more.
•
Fill the system with a permanent type coolant, and bleed
the air from the system (see Air Bleeding).

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