KYMCO XCITING S 400 Manual page 210

5. Cooling System
Discard the WTS O-ring and replace it with a new item.
Thermostat
Loosen the thermostat hose clamp with a #2 Phillips screwdriver.
Slide up the clamp and free the coolant hose from the thermostat.
Squeeze the air bleed hose clamp with needle nose pliers and
slide back the clamp. Free the air bleed hose from the
thermostat.
XCITING S 400
5-17