Checking The Thermostat; Installing The Thermostat - Yamaha MBK XMAX 2014 Service Manual

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CHECKING THE THERMOSTAT

• Thermostat

Does not open at 80.5–83.5 °C (176.9–182.3

°F) → Replace.

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-

A. Fully closed

B. Fully open

If the accuracy of the thermostat is in doubt, re-

place it. A faulty thermostat could cause serious

overheating or overcooling.

• Thermostat cover

Cracks/damage → Replace.

• Thermostat

Install the thermostat with its breather hole "a" in

the position shown in the illustration.

• Cooling system

(with the specified amount of the recom-

mended coolant)

Refer to "CHANGING THE COOLANT" on

• Cooling system

Leaks → Repair or replace any faulty part.

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