Thermostat Check; Thermostat Refitting - PIAGGIO MSS X9 EVOLUTION 250 Workshop Manual

Cooling system
Check
- Visually check that the thermostat is not dam-
aged.
- Prepare a metal container with approx. 1 litre of
water.
- Immerse the thermostat, keeping it in the centre
of the container.
- Immerse the multimeter temperature probe, near
the thermostat.
- Warm up the container using the heat gun.
- Check the temperature when the thermostat
starts to open:
- Heat up until the thermostat is completely open
- Replace the thermostat if it does not work prop-
erly.
CAUTION
TO EXECUTE THE TEST CORRECTLY, MAKE SURE NEI-
THER THE THERMOSTAT NOR THE THERMOMETER
TOUCHES THE CONTAINER.
Specific tooling
020331Y Digital multimeter
020151Y Air heater
Characteristic
Thermostat check: opening travel
3.5 mm at 80°C
Thermostat check: Opening start temperature
69.5 ÷ 72.5°C
Refitting
- Place the thermostat with the bleeding hole at the
highest point.
- Make sure that the rubber gasket is positioned
properly.
- Fit the thermostat cover with the connection for
the carburettor heating pipe facing the flywheel.
- Tighten the two screw to the torque indicated be-
low.
Locking torques (N*m)
COOL SYS - 202
MSS X9 Evolution 250