Kymco XCITING 500 - Service Manual > Thermostat

Cooling System / Thermostat


Remove the floorboard.

Remove the ignition coil.

Remove the nut and thermostat housing stay from the frame.

Cooling System

Remove the bolts, housing stay and thermostat housing cover.

Cooling System

Remove the O-ring from the housing cover.

Remove the thermostat.

Cooling System


Visually inspect the thermostat for damage.

Heat the water with an electric heating element to operating temperature for five minutes.

Suspend the thermostat in heated water to check its operation.

Cooling System

Replace the thermostat if the valve stays open at room temperature, or if it respond at temperatures other than those specified.

Thermostat begin to open: 80−84ºC (176−183ºF)

Valve lift: 8 mm (0.3 in) minimum at 95ºC (203ºF)

Cooling System


Install the thermostat into the housing with its air bleed hole facing up and aligning bleed hole with the tab in the housing.

Cooling System

Install a new O-ring into the housing cover groove.

Install the housing cover and housing stay to the housing.

Tighten the bolts securely.

Install the housing stay to the frame.

Tighten the nut securely.

Fill the system with recommended coolant and bleed the air.

Cooling System

See also:

 Kymco XCITING 500 - Service Manual > Cooling System Testing

RADIATOR CAP INSPECTION Remove the radiator cap. Pressure test the radiator cap. Replace the radiator cap if it does not hold pressure, or if relief pressure is too high or too low.

 Kymco XCITING 500 - Service Manual > Water Pump

MECHANICAL SEAL INSPECTION Inspect the telltale hole for sign of coolant leakage. If there is leakage, the mechanical seal is defective, and water pump should be replaced.