DAELIM ET-250 Service Manual page 117

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E. Keep eng. 3000~4000 rpm
and inspect cooling fan was
operating after the
temperature gauge over 3
checks?
Y
F. Confirm the cooling fan was
convulsion?
Y
Meter unusual
If circuit connects reverse
cooling fan will forward,
correct and check again.
E-1. Measure thermal switch
N
E-2. Connect cooling fan
E-3. Keep eng. 3000~4000
E-4. Remove thermostat from
For bleed the air bubbles
completely, open radiator cap
and start engine while engine is
cool then press water hose
softly by hand to bleeding.
Turn the throttle repeatedly
until the coolant surface
becomes stable.
to confirm voltage be
changed (12¡÷0V)?
Y
terminals with battery
(12V) directly to inspect
its operation?
Y
rpm and inspect coolant
flow into reserve tank
after the temperature
gauge over 3 checks?
Y
holder then heats it by
water directly to check its
operation?
Y
N
Replace thermal switch
N
Replace cooling fan
N
Replace thermostat
Refill with coolant then
check again
Notice the water hose
can't any unsuitable
bend or twist and
bleed the air bubbles
completely.