Honda CRF450X 2007, Owner'S Manual

Page: 55 / 185

Coolant
50
Servicing Your Honda
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 48).
Capacity:
1.28 US qt (1.21 R )
(1) radiator cap (2) filler neck
3. Remove the radiator reserve tank cap (3) and
fill the reserve tank to the UPPER level line
(4).
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 3-4 times to bleed air from
the system.
• 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.
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 radiator reserve tank cap.
NOTICE
(3) radiator reserve tank cap
(4) UPPER level line
(1)
(2)
(4)
(3)
031-060.qxd 06.3.27 6:23 PM ページ50