Checking The Thermostat; Installing The Thermostat - Yamaha RAPTOR YFM700RF 2015 Service Manual

EAS26450

CHECKING THE THERMOSTAT

1. Check:
• Thermostat "1"
Does not open at 69–73 °C (156.2–163.4 °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 thermo-
stat and thermometer's indicated tempera-
ture.
A. Fully closed
B. Fully open
TIP
If the accuracy of the thermostat is in doubt, re-
place it. A faulty thermostat could cause serious
overheating or overcooling.
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6-4
2. Check:
• Thermostat cover
• Thermostat housing (cylinder head)
Cracks/damage → Replace.
EAS1S3L009

INSTALLING THE THERMOSTAT

1. Install:
• Thermostat "1"
• O-ring "2" New
• Thermostat cover "3"
TIP
Install the thermostat with its breather hole "a"
facing up.
3
2. Fill:
• Cooling system
(with the specified amount of the recom-
mended coolant)
Refer to "CHANGING THE COOLANT" on
page 3-16.
3. Check:
• Cooling system
Leak → Repair or replace any faulty part.
THERMOSTAT
a
1
2
New