Switch and Sensors
Water Temperature Switch Installation
Apply silicone sealant to the threads of the water temper-
Sealant - Kawasaki Bond: 59019–120
Torque - Water Temperature Switch: 7.8 N·m (0.8 kgf·m, 69
Fill the engine with coolant and bleed the air from the
cooling system (see Periodic Maintenance chapter).
Water Temperature Switch Inspection
Remove the water temperature switch.
Suspend the switch [A] in a container of machine oil so
that the heat-sensitive portion and threaded portion are
Suspend an accurate thermometer [B] with heat-sensitive
portions [C] located in almost the same depth.
The switch and thermometer must not touch the con-
tainer side or bottom.
Place the container over a source of heat and gradually
raise the temperature of the oil while stirring the oil gently
for even temperature.
Using the hand tester, measure the internal resistance of
the switch across the terminal and the body at the tem-
peratures shown in the table.
If the measurement is out of the range, replace the switch.
Water Temperature Switch Resistance
From OFF to ON at 113
From ON to OFF at 108°C (226°F) ~ temperature less
than ON temperature
ON: Less than 0.5 Ω
OFF: More than 1 MΩ
Diode (Rectifier) Inspection
Remove the fuel tank (see Fuel System chapter).
Disconnect the diode assemblies [A].
ELECTRICAL SYSTEM 16-87