12. COOLING SYSTEM GRAND DINK 250 Battery Check fan motor by battery. Fan Motor Thermostatic Switch CHECK THERMOSTATIC SWITCH When coolant temperature lower then 88~92 the thermostatic switch OFF. When coolant temperature over 88~92 the thermostatic switch ON. Bolts Install the fan shroud on the radiator with the three bolts. Fan Shroud Radiator 12-7