Checking The Thermostat; Installing The Thermostat - Yamaha YZFR6X(C) 2008 Service Manual

EAS26450

CHECKING THE THERMOSTAT

1. Check:
• Thermostat
Does not open at 71–85 °C (159.8–185.0
°F) → Replace.
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a. Suspend the thermostat "1" in a container
"2" filled with water.
b. Slowly heat the water "3".
c. Place a thermometer "4" in the water.
d. While stirring the water, observe the ther-
mostat and thermometer's indicated tem-
perature.
A. Fully closed
B. Fully open
NOTE:
If the accuracy of the thermostat is in doubt,
replace it. A faulty thermostat could cause seri-
ous overheating or overcooling.
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2. Check:
• Thermostat cover
Cracks/damage → Replace.
EAS26480

INSTALLING THE THERMOSTAT

1. Install:
• Thermostat
NOTE:
Install the thermostat with its breather hole "a"
facing up.
2. Fill:
• Cooling system
(with the specified amount of the recom-
mended coolant)
Refer to "CHANGING THE COOLANT"
on page 3-19.
3. Check:
• Cooling system
Leaks → Repair or replace any faulty
part.
6-7
THERMOSTAT