4-16 COOLING SYSTEM
Coolant (see Cooling System in the Periodic Maintenance
Seats (see Frame chapter)
Fuel Tank (see Fuel System chapter)
Thermostat Housing Cover Bolts [A]
Thermostat Housing Cover [C]
Be sure to install the O-ring [A] on the housing cover.
Tighten the housing cover bolts.
Torque - Thermostat Housing Cover Bolts: 5.9 N·m (0.60
kgf·m, 52 in·lb)
Fill the radiator with coolant.
Remove the thermostat, and inspect the thermostat valve
[A] at room temperature.
If the valve is open, replace the thermostat with a new
To check valve opening temperature, suspend the ther-
mostat [A] in a container of water and raise the tempera-
ture of the water.
The thermostat must be completely submerged and must
not touch the container sides or bottom. Suspend an ac-
curate thermometer [B] in the water so that the heat sen-
sitive portions [C] are located in almost the same depth.
It must not touch the container, either.
If the measurement is out of the specified range, replace
the thermostat with a new one.
Thermostat Valve Opening Temperature
58 ∼ 62°C (136 ∼ 144°F)