Honda BF35A Service Manual page 291

NOTE:
No problem if the overheat indicator light comes ON when restarting
the engine after hot soak at high temperature, but comes OFF after
idling for a few minutes
ON while the engine is running
YES
-
1.
Stop the engine and check the
water intake screen for clogging. Is
the water intake screen clogged?
Remove the foreign material and
recheck.
I
NO
c
~
3.
Idle in gear for a few minutes to
cool down the engine. Check the
overheat indicator light. Does the
overheat indicator light go OFF?
YES w
2. Start the engine and check the
cooling system indicator with the
engine idling. Does cooling water
constantly flow through the cooling
system indicator?
System is OK (engine temperature
was high).
NO
6. Check the ECT sensor (P. 16-3). Is
the ECT sensor in good condition.
NO Replace the ECT sensor.
NO
J.
4. Check the thermostat. Is the ther-
mostat good?
YES
.
Check the discharge port for clog-
ging, clean the discharge port if
necessary.
Check the water pump for wear or
damage. Replace or repair the
water pump.
Check the water tube for clogging
or damage. Clean
or
replace the
water tube if necessary.
NO
5. Disconnect the ECT (Engine coolant
temperature) sensor 2P connector.
Check the overheat indicator light.
Does the overheat indicator light go
OFF?
Check the CDI unit (P. 16-1).
I
YES
i.
1
Replace or repair the wire harness.
2-1 0