Checking The Thermostat; Installing The Thermostat Assembly - Yamaha FJR1300A(D) Service Manual

EAS26450

CHECKING THE THERMOSTAT

1. Check:
• Thermostat
Does not open at 69.0–73.0 °C (156.20–
163.40 °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.
71±2°C
(159.8±3.6°F)
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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2. Check:
• Thermostat housing
Cracks/damage → Replace.
3. Check:
• Thermostat hoses
• Thermostat pipes
• Radiator inlet hose
• Thermostat cover/radiator filler pipe
EAS26490
INSTALLING THE THERMOSTAT
ASSEMBLY
1. Install:
• Copper washer
• Coolant temperature sensor
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EC3P61019
NOTICE
Use extreme care when handling the coolant
temperature sensor. Replace any part that
was dropped or subjected to a strong im-
pact.
2. Install:
• Thermostat "1"
• Thermostat housing "2"
TIP
Install the thermostat with its breather hole "a"
facing up.
3. Fill:
• Cooling system
(with the specified amount of the recom-
mended coolant)
Refer to "CHANGING THE COOLANT" on
page 3-27.
4. Check:
• Cooling system
Leaks → Repair or replace any faulty part.
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6-8
THERMOSTAT
New
Coolant temperature sensor
22 Nm (2.2 m·kg, 16 ft·lb)
2
a
1