Yamaha WaveRunner FX140 Manuel D'entretien page 434

POWR
THERMOSTAT
2
3
1
4
SERVICE POINTS
Thermostat inspection
1. Check:
• Thermostat 1
Does not open at 50–60 °C (123–
141 °F) → Replace.
Checking steps:
• Suspend the thermostat in a container
filled with water.
• Slowly heat the water.
• Place a thermometer in the water.
• While stirring the water, observe the ther-
mostat and thermometer's indicated tem-
perature.
1 Thermostat
2 Thermometer
3 Water
4 Container
È Fully closed
É Fully open
NOTE:
If the accuracy of the thermostat is in doubt,
replace it. A faulty thermostat could cause seri-
ous overheating or over cooling.
2. Check:
• Thermostat housing cover
• Thermostat housing
Cracks/damage → Replace.
3. Check:
• Cooling system
Leaks → Repair or replace any faulty
part.
Thermostat installation
1. Install:
• Thermostat housing 1
• Thermostat 2
• Thermostat housing cover
5-107
E