Yamaha FZR400 1988-1989, Service Manual

Page: 366 / 477

COOLING SYSTEM
5. switch
??
Remove the
s w i t c h f r o m t h e
thermostat housing.
*Connect the pocket tester x to the
switch .
??
Immerse the switch in the water
??
Check the switch for continuity.
Note temperatures while heating the water
with the temperature gauge .
Test
Step
Water Temperature
Good
Condition
1
0- 98°C
(32 208.4”
X
2
More than 105 3°C
(221.0
0
3 ”
105 to 98°C
(221 .O to 208.4”
0
4 ”
Less than 98°C
(208.4”
X
Test 1 2; Heat-up tests
Test 3” 4”; Cool-down tests
: Continuity : No continuity
Handle the switch with special care.
Never subject it to strong shock or allow it to be
dropped. Should it be dropped, it must be
replaced.
Switch:
8 Nm (0.8 m-kg, 5.8
Three Bond
10
I
CAUTION:
After replacing the switch, check the
level in the radiator and also check for
any leakage.
NOTE:
The electric fan is controlled by the
switch whenever the main switch is “ON” or
“OFF”. Thus, under certain operating condi-
tions, this fan may continue to run until the
engine temperature has cooled down to about
98°C (208°F).