- Check the free length of the spring.
Characteristic
Standard length:
65.2 mm
Length limit after use:
64.0 mm
Thermostat
Check
Before proceeding to disassemble, carry out a few
checks:
- Connect the diagnostic tester and select the «PA-
RAMETERS» function (see Injection chapter).
- Start the cold engine and let it warm up.
- Manually check the moment when there is a sud-
den increase in temperature at the output of the
radiator cold box.
N.B.
THERE SHOULD BE A SLIGHT AND GRADUAL HEATING
CAUSED BY A SMALL PASSAGE ON THE THERMOSTAT
TO THE OFF POSITION.
Specific tooling
020460Y Scooter diagnosis and tester
- Check the temperature read by the diagnostic
tester.
Thermostat opening starts: approx. 80°C
- If opening occurs at different temperatures,
check the thermostat.
- Remove the thermostat as described in the fly-
wheel cover paragraph.
Cooling system Nexus 500 euro 3
COOL SYS - 334
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