Yamaha WR450FB 2012, Owner'S Service Manual

Page: 107 / 392

PERIODIC MAINTENANCE
3-16
3. Check:
• Coolant level “a”
Coolant level low
o
Add coolant.
ECA1DX1004
NOTICE
• Adding water instead of coolant lowers the
antifreeze content of the coolant. If water
is used instead of coolant check, and if
necessary, correct the antifreeze concen-
tration of the coolant.
• Use only distilled water. However, if dis-
tilled water is not available, soft water may
be used.
4. Start the engine, warm it up for several min-
utes, and then turn it off.
5. Check:
• Coolant level
TIP
Before checking the coolant level, wait a few
minutes until it settles.
EAS1DX3090
CHECKING THE COOLING SYSTEM
1. Remove:
• Seat
• Air scoop (left/right)
Refer to “GENERAL CHASSIS” on page 5-
1.
• Fuel tank
Refer to “FUEL TANK” on page 8-1.
2. Check:
• Radiator
• Radiator hose
Cracks/damage
o
Replace.
Refer to “RADIATOR” on page 7-1.
3. Install:
• Fuel tank
Refer to “FUEL TANK” on page 8-1.
• Air scoop (left/right)
• Seat
Refer to “GENERAL CHASSIS” on page 5-
1.
EAS1DX3091
CHANGING THE COOLANT
EWA1DX1004
WARNING
A hot radiator is under pressure. Therefore,
do not remove the radiator cap when the en-
gine is hot. Scalding hot fluid and steam
may be blown out, which could cause seri-
ous injury. When the engine has cooled,
open the radiator cap as follows:
Place a thick rag or a towel over the radiator
cap and slowly turn the radiator cap coun-
terclockwise toward the detent to allow any
residual pressure to escape. When the hiss-
ing sound has stopped, press down on the
radiator cap and turn it counterclockwise to
remove.
1. Remove:
• Seat
• Left side cover
2. Remove the catch tank hose from the catch
tank and drain the tank of its coolant.
3. Remove:
• Coolant drain bolt “1”
4. Remove:
• Radiator cap
Drain the coolant completely.
1. Radiator