Attention:
- Do not mix with other liquids.
- Using a non-recommended fluid may cause corrosion of the system.
- Do not reduce the concentration of the coolant. This may reduce the anti-corrosion properties. Use soft water to dilute the coolant.
- Change the fluid when the engine is cold.
Set the air conditioner or heater temperature control to the HOT position.
1. Loosen the radiator cap to relieve pressure, then remove the cap.
Caution: If you open the radiator cap while the engine is hot, pressurized coolant may spray out. After the coolant has cooled, open the radiator cap slowly.
2. Loosen the drain cock and drain the coolant. At the same time, drain the coolant from the reservoir.
3. Unscrew the engine drain plug and drain the coolant from the engine.
4. Tighten the drain cock.
5. Replace the washer with a new one and tighten the engine drain plug.
6. Fill the reservoir with a mixture of soft water and clean Honda Ultra coolant to the top edge. While filling, loosen the air bleed screw on the thermostat housing. When the air comes out and coolant starts to flow out, tighten the bleed screw.
7. Warm up the engine for approx. 10 min. at a speed slightly above idle (approx. 1500/min.) and check that the thermostat has opened.
8. Turn off the engine and check the coolant level. If the level has dropped, which is caused by air being removed from the system, add liquid to the base of the radiator filler neck. At the same time, add coolant to the reservoir to the MAX level.
9. Start the engine again and at 1500 rpm check that the coolant level does not drop. If the coolant level drops, it means that the air has not been completely removed, so repeat the process of bleeding air and adding coolant until the level stops dropping.
10. If the coolant level stops dropping, install the radiator cap.