Honda CRF450R 2006 Owner's Manual page 46

Coolant
Cooling System Inspection
1. Check the cooling system for leaks (see the
Honda Service Manual for troubleshooting of
leaks).
2. Check the water hoses (1) for cracks,
deterioration, and clamp bands for looseness.
3. Check the radiator mount for looseness.
4. Make sure the overflow tube (2) is connected
and not clogged.
5. Check the radiator fins for clogging.
6. Check the water leakage check hole (3) below
the water pump cover (4) for leakage. Make
sure the hole remains open. If water leaks
through the check hole, the water pump seal is
damaged. If oil leaks through the check hole,
the transmission oil seal is damaged. See the
Honda Service Manual or consult your Honda
dealer for replacing the water seal or the
transmission oil seal. Both seals should be
replaced at the same time.
42
Servicing Your Honda
(1)
(4)
(1) water hoses
(2) overflow tube
(3) water leakage check hole
(4) water pump cover
Coolant Replacement
Refer to Safety Precautions on page 19.
Coolant should be replaced by your Honda
(2)
dealer, unless you have the proper tools and
service data and are mechanically qualified.
Refer to the Honda Service Manual
(page 156).
WARNING
(1)
Removing the radiator cap while the
engine is hot can allow the coolant to
spray out, seriously scalding you.
Always let the engine and radiator cool
down before removing the radiator cap.
To properly dispose of drained coolant, refer to
You & the Environment, page 138.
(3)
NOTICE
Improper disposal of drained fluids is harmful to
the environment.