Aeon 350cc, Service Manual

Page: 49 / 192

ENGINE
4-49
COOLANT REPLACEMENT
1. The cooling system can be serviced on the motorcycle.
2. Remove radiator pressure cap, which located under handlebar.
3. Remove recovery cap, which located under footrest.
4. Place a water pan under the water pump; remove the drain bolt
to drain out the coolant.
5. Reinstall the drain bolt.
6. Refill system with the coolant and bleed out the air bubbles.
COOLING SYSTEM BLEEDING PROCEDURE
Always wear safety glasses and proper shop
clothing when performing the procedures in
this manual. Failing to do so may lead to
possible injury or death.
Use caution when performing these
procedures.
Coolant may be hot and may cause severe
injury or burns.
NOTE: If the coolant level is LOW in the radiator, or if there
are leaks in the system, the coolant system will not draw
coolant from the reservoir tank.
NOTE: Use this procedure when a unit overheats and no
apparent leaks in the cooling system are found.
1. Park motorcycle with center stand.
2. Remove recovery bottle cap and fill bottle to the full line.
3. Slightly loosen the bleed hose (bypass hose) to let air escape.
4. Close the bleed hose.
5. Start the engine and let it idle for 5-10 minutes or until the
thermostat opens and allows coolant to flow through the system.
Bubbles will escape continuing.
6.Until fan start the temperature will cool down and coolant be
sucked into coolant system.
7. Squeeze the coolant lines by hand to help purge the system of
air.
NOTE: If there is air in the system you will see air
bubbles forming through the radiator filler neck.