COOLING AND LUBRICATION SYSTEM 6-3
COOLING CIRCUIT
1 Thermostat
2 Reserve tank
3 Radiator
4 No.1 cylinder head
5 No.1 cylinder
6 No.2 cylinder
7 No.2 cylinder head
8 Water pump
COOLING CIRCUIT INSPECTION
Before removing the radiator and draining the engine coolant,
inspect the cooling circuit for tightness.
• Remove the cowling. (#7-5)
• Remove the radiator cap
1 and connect the radiator tester
2
to the filler.
"
• Give a pressure of about 120 kPa (1.2 kgf/cm², 17.0 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.
"
!
Do not remove the radiator cap when the engine is
hot.
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 specified pres-
sure, or the radiator can be damaged.
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