COOLING CIRCUIT
RESERVOIR
COOLING
FAN THERMO
RADIATOR
SWITCH
COOLING CIRCUIT INSPECTION
Before removing the radiator and draining the engine coolant,
inspect the cooling circuit for tightness.
• Remove the fuel tank. (6-3)
• Remove the radiator cap 1 and connect the tester 2 to the
filler.
Do not remove the radiator cap when the engine is
hot.
• Give a pressure of about 120 kPa (1.2 kgf/cm², 17 psi) and
see if the system holds this pressure for 10 seconds.
• If the pressure should fall during this 10-second interval, it
means that there is a leaking point in the system. In such a
case, inspect the entire system and replace the leaking com-
ponent or part.
When removing the radiator cap tester, put a rag on
the filler to prevent spouting of engine coolant.
Do not allow the pressure to exceed the radiator cap
release pressure, or the radiator can be damaged.
TANK
THERMOSTAT
CYLINDER HEAD
CYLINDER
WATER
COOLING AND LUBRICATION SYSTEM 7-3
ENGINE COOLANT
TEMPERATURE
SENSOR
PUMP