Checking The Thermostat; Assembling The Thermostat Assembly - Yamaha YZF-R1 1998 Service Manual

Yzf-r1 1998
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THERMOSTAT ASSEMBLY
EB502020

CHECKING THE THERMOSTAT

1. Check:
• thermostat 1
Does not open at 71 ~ 85 ˚C → Replace.
a. Suspend the thermostat in a con-
tainer filled with water.
b. Slowly heat the water.
c. Place a thermometer in the water.
d. While stirring the water, observe the
thermostat and thermometer's indi-
cated temperature.
1 Thermostat
2 Thermometer
3 Water
4 Container
Å Fully closed
ı Fully open
NOTE:
If the accuracy of the thermostat is in
doubt, replace it. A faulty thermostat
could cause serious overheating or
overcooling.
2. Check:
• thermostat housing cover
• thermostat housing
Cracks/damage → Replace.
EB502030
ASSEMBLING THE THERMOSTAT
ASSEMBLY
1. Install:
• thermostat housing 1
• thermostat 2
• thermostat housing cover
NOTE:
Install the thermostat with its breather
hole a facing up.
5 - 11
COOL

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