2012 YAMAHA WR 450F cooling

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FOR YOUR SAFETY – PRE-OPERATION CHECKS
EAU15596
Inspect your vehicle each time you use it to make sure the vehicle is in safe operating condition. Always follow the inspection
and maintenance procedures and schedules described in the Owner’s Manual.
WARNING
EWA11151
Failure to inspect or maintain the vehicle properly increases the possibility of an accident or equipment damage.
Do not operate the vehicle if you find any problem. If a problem cannot be corrected by the procedures provided inthis manual, have the vehicle inspected by a Yamaha dealer.
Before using this vehicle, check the following points:
ITEM CHECKS PAGE
Fuel Check fuel level in fuel tank.
Refuel if necessary.
Check fuel line for leakage.
Check fuel tank breather hose for obst
ructions, cracks or damage, and check
hose connection. 3-10, 3-11
Engine oil Check oil level in oil tank.
If necessary, add recommended oil to specified level.
Check vehicle for oil leakage. 6-8
Coolant Check coolant level.
If necessary, add recommended coolant to specified level.
Check cooling system for leakage. 6-12
Front brake Check operation.
If soft or spongy, have Yamaha dealer bleed hydraulic system.
Check brake pads for wear.
Replace if necessary.
Check fluid level in reservoir.
If necessary, add specified brak
e fluid to specified level.
Check hydraulic system for leakage. 6-22, 6-23
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PERIODIC MAINTENANCE AND ADJUSTMENT
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12 *Chassis fasteners Make sure that all nuts, bolts and screws are properly
tightened. 
13 Brake lever pivot
shaft Lubricate with silicone grease.

14 Brake pedal pivot
shaft Lubricate with lithium-soap-based grease.

15 Clutch lever pivot
shaft Lubricate with lithium-soap-based grease.

16 Sidestand Check operation.
Lubricate with lithium-soap-based grease. 
17 * Sidestand switch Check operation. 
18 * Front fork Check operation and for oil leakage. 
19 * Shock absorber
assembly Check operation and shock absorber for oil leakage.

20 * Rear suspension
relay arm and
connecting arm
pivoting points Check operation.

21 Engine oil Change.
Check oil level and vehicle for oil leakage. 
22 Engine oil filter
element Replace.

23 * Cooling system Check hoses for cracks of damage.
Replace if necessary.

Check coolant level and vehicle for coolant leakage. 
Change with ethylene glycol anti-freeze coolant. Every 1 year
NO. ITEM CHECKS AND MAINTENANCE JOBS
INITIAL
ODOMETER
READINGS
ANNUAL CHECK
1000 km
(600 mi) or
1 month 3000 km
(1800 mi) or 3
months 5000 km
(3000 mi) or 6
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PERIODIC MAINTENANCE AND ADJUSTMENT
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9the radiator pipe after
high-speed operation, other-
wise the cooling system is hot
and cause burns. Always let the
engine oil cool down sufficient-
ly before removing the oil tank
cap.
[EWA16140]

NOTICE: Do not op-
erate the vehicle until you know
that the engine oil level is suffi-
cient.
[ECA10011]

TIPThe engine oil should be above theminimum level mark. 4. Remove the engine oil check bolt
and its gasket, and then check the
engine oil level.
TIPThe engine oil should be below the brimof the check bolt hole. 5. If the engine oil is below the mini-
mum level mark, add sufficient oil
of the recommended type to raise
it to the brim of the engine oil check
bolt hole.
1. Oil tank cap
1
1. Oil tank cap
2. Dipstick
3. Minimum level mark
312
1. Engine oil check bolt
2. Gasket
1. Engine oil check bolt hole
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PERIODIC MAINTENANCE AND ADJUSTMENT
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TIPThe coolant should be at the bottom of
the radiator filler neck. The level will
change with variation of engine temper-ature.3. If the coolant is below the correct
coolant level, add coolant, and
then install the radiator cap.
NOTICE: If coolant is not avail-
able, use distilled water or soft
tap water instead. Do not use
hard water or salt water since it
is harmful to the engine. If water
has been used instead of cool-
ant, replace it with coolant as
soon as possible, otherwise the
cooling system will not be pro-
tected against frost and corro-
sion. If water has been added to
the coolant, have a Yamaha
dealer check the antifreeze con-
tent of the coolant as soon as
possible, otherwise the effec-
tiveness of the coolant will be
reduced.
[ECA10472]

EAUM1315
To change the coolant 1. Place the vehicle on a level sur- face and let the engine cool if nec-
essary.
2. Place a container under the engine to collect the used coolant.
3. Remove the coolant drain bolt and its gasket, and then the radiator
cap to drain the cooling system.
WARNING! Never attempt to re-
move the radiator cap when the
engine is hot.
[EWA10381]

4. After the coolant is completely drained, thoroughly flush the cool-
ing system with clean tap water.
5. Install the coolant drain bolt and its new gasket, and then tighten the
bolt to the specified torque.
6. Pour the recommended coolant
1. Radiator cap
1. Radiator filler neck
2. Correct coolant level
1
2
1
1. Coolant drain bolt
2. GasketTightening torque:
Coolant drain bolt:10 Nm (1.0 m·kgf, 7.2 ft·lbf)
21
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PERIODIC MAINTENANCE AND ADJUSTMENT
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into the radiator until it is full.
7. Install the radiator cap, start the engine, let it idle for several min-
utes, and then turn it off.
8. Remove the radiator cap to check the coolant level in the radiator. If
necessary, add sufficient coolant
until it reaches the bottom of the
radiator filler neck, and then install
the radiator cap.
9. Start the engine, and then check the vehicle for coolant leakage. If
coolant is leaking, have a Yamaha
dealer check the cooling system.
EAU52932
Cleaning the air filter element
and check hose The air filter element should be cleaned
or replaced at the intervals specified in
the periodic maintenance and lubrica-
tion chart. Clean or, if necessary, re-
place the air filter element more
frequently if you are riding in unusually
wet or dusty areas. In addition, the air
filter check hose must be frequently
checked and cleaned if necessary.
To clean the air filter element1. Open the air filter case cover by loosen the quick fastener screw
and pulling the case cover outward
as shown. 2. Unhook the holding clip, and then
pull the air filter element out.
3. Remove the sponge material from the air filter element frame, clean it
Antifreeze/water mixture ratio:1:1
Recommended antifreeze:
High-quality ethylene glycol anti-
freeze containing corrosion inhibitors
for aluminum engines
Coolant quantity: Radiator capacity (including all
routes): 1.04 L (1.10 US qt, 0.92 Imp.qt)
1. Quick fastener screw
2. Air filter case cover
1. Holding clip
2. Air filter element
12
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PERIODIC MAINTENANCE AND ADJUSTMENT
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9Engine overheating
WARNING
EWAT1040

Do not remove the radiator cap when the engine and radiator are hot. Scalding hot fluid and steam may be
blown out under pressure, which could cause serious injury. Be sure to wait until the engine has cooled.

Place a thick rag, like a towel, over the radiator cap, and then slowly rotate the cap counterclockwise to the de-
tent to allow any residual pressure to escape. When the hissing sound has stopped, press down on the capwhile turning it counterclockwise, and then remove the cap.
TIPIf coolant is not available, tap water can be temporarily us
ed instead, provided that it is changed to the recommended coolantas soon as possible.
Wait until the
engine has cooled.
Check the coolant level in the
reservoir and radiator.
The coolant level
is OK.The coolant level is low.
Check the cooling system
for leakage.
Have a Yamaha dealer checkand repair the cooling system.Add coolant. (See TIP.)
Start the engine. If the engine overheats again,
have a
Yamaha dealer check
and repair the cooling system.
There is
leakage.
There is
no leakage.
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SPECIFICATIONS
EAU50973
Dimensions:Overall length: 2315 mm (91.1 in)
Overall width: 825 mm (32.5 in)
Overall height: 1275 mm (50.2 in)
Seat height:
960 mm (37.8 in)
Wheelbase: 1475 mm (58.1 in)
Ground clearance: 335 mm (13.19 in)
Minimum turning radius:
2400 mm (94.5 in)Weight:Curb weight: 129 kg (284 lb)Noise and vibration level:Noise level (77/311/EEC): 80.2 dB(A)
Vibration on seat (EN1032, ISO5008): Will not exceed 0.5 m/s
2
Vibration on handlebar (EN1032, ISO5008): Will not exceed 2.5 m/s
2
Engine:Engine type: Liquid cooled 4-stroke, DOHC
Cylinder arrangement:
Single cylinder
Displacement: 449 cm
3
Bore  stroke:
95.0  63.4 mm (3.74  2.50 in) Compression ratio:
12.30 : 1
Starting system:
Electric starter and kickstarter
Lubrication system: Dry sump
Engine oil:Recommended brand:
YAMALUBE
Type: SAE 10W-40, 10W-50, 15W-40, 20W-40 or
20W-50
Recommended engine oil grade: API service SG type or higher, JASO stan-
dard MA
Engine oil quantity: Without oil filter element replacement:
0.95 L (1.00 US qt, 0.84 Imp.qt)
With oil filter element replacement: 1.00 L (1.06 US qt, 0.88 Imp.qt)Cooling system:Radiator capacity (including all routes): 1.04 L (1.10 US qt, 0.92 Imp.qt)
Air filter:Air filter element:
Wet elementFuel:Recommended fuel: Premium unleaded gasoline only
Fuel tank capacity:
7.2 L (1.90 US gal, 1.58 Imp.gal)
Fuel reserve amount: 3.0 L (0.79 US gal, 0.66 Imp.gal)Fuel injection:Throttle body:
ID mark: 1DX1 00Spark plug(s):Manufacturer/model: NGK/CR8E
Spark plug gap: 0.7–0.8 mm (0.028–0.031 in)Clutch:Clutch type: Wet, multiple-discTransmission:Primary reduction ratio:
2.652 (61/23)
Final drive: Chain
Secondary reduction ratio: 3.357 (47/14)
Transmission type:
Constant mesh 5-speed
Operation: Left foot operation
–20 –10 0 1020 30 40 50 C
10 30 50 70 90 110
0 130 F
SAE 20W-50SAE 20W-40SAE 15W-40SAE 10W-40SAE 10W-50
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