Inspection; Installation - Suzuki GSX-R750 Service Manual

5-10 COOLING AND LUBRICATION SYSTEM

INSPECTION

Inspect the thermostat pellet for signs of cracking.
Test the thermostat at the bench for control action, in the follow-
ing manner.
• Pass a string between flange, as shown in the illustration.
• Immerse the thermostat in the water contained in a beaker, as
shown in the illustration. Note that the immersed thermostat is
in suspension. Heat the water by placing the beaker on a stove
and observe the rising temperature on a thermometer.
• Read the thermometer just when opening the thermostat. This
reading, which is the temperature level at which the thermostat
valve begins to open, should be within the standard value.
Thermostat valve opening temperature
Standard: Approx. 82°C (180°F)
• Keep on heating the water to raise its temperature.
• Just when the water temperature reaches specified value, the
thermostat valve should have lifted by at least 8.0 mm (0.31 in).
Thermostat valve lift
Standard: Over 8.0 mm at 95°C (Over 0.31 in at 203°F)
• A thermostat failing to satisfy either of the two requirements
(start-to-open temperature and valve lift) must be replaced.

INSTALLATION

• Install the thermostat.
NOTE:
The jiggle valve A of the thermostat faces upside.
1 Thermostat 2 String
3 Stove 4 Thermometer