Suzuki GSX-R750, Service Manual, Page: 232 / 495

COOLING AND LUBRICATION SYSTEM 5-3
WATER
PUMP
RADIATOR
OIL COOLER
COOLING
FAN THERMO
SWITCH
ENGINE COOLANT
TEMPERATURE
SENSOR
THERMOSTAT
CYLINDER HEAD
CYLINDER
RESERVE
TANK
COOLING CIRCUIT
COOLING CIRCUIT INSPECTION
Before removing the radiator and draining the engine coolant,
inspect the cooling circuit for tightness.
• Remove the under cowling. (
6-5)
• 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/cm
2
, 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 re-
lease pressure, or the radiator can be damaged.