Cooling System Bleed Air - Honda CRF450L 2019 Owner's Manual & Off-Road Handbook

Coolant

Cooling System Bleed Air

1. Remove the radiator cap (1).
2. Fill the system with the recommended coolant
through the filler opening up to filler neck (2).
Use a fresh recommended coolant mixture
(page 72).
Capacity: 1.31 US qt (1.24 ℓ)
after disassembly
1.20 US qt (1.14 ℓ)
after draining
(1)
(2)
(1) radiator cap (2) filler neck
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Servicing Your Honda
3. Remove the reserve tank cap (3) and fill the
reserve tank up to the UPPER level line (4).
(4)
(3) reserve tank cap (4) UPPER level line
4. Bleed air from the system as follows:
• Shift the transmission into neutral. Start the
engine and let it idle 2 -3 minutes.
• Snap the throttle three - four times to bleed
air from the system.
(3)
• Stop the engine and, if necessary, add
coolant up to the proper level. Reinstall the
radiator cap.
• Check the level of coolant in the reserve tank
and fill to the UPPER level if it is low.
NOTICE
If the radiator cap is not installed properly, it will
cause excessive coolant loss and may result in
overheating and engine damage.
5. Install the reserve tank cap.