2015 YAMAHA WR 450F radiator

DESCRIPTION
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EAU10421
Right view
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9 4
1. Shock absorber assembly comp
ression damping force adjusting
screw (for slow compression damping) (page 3-16)
2. Shock absorber assembly compression damping force adjusting nut (for fast compression damping) (page 3-16)
3. Kickstarter (page 3-12)
4. Fuel tank cap (page 3-9)
5. Radiator cap (page 6-13)
6. Steering lock (page 3-13) 7. Coolant drain bolt (page 6-13)
8. Brake pedal (page 3-9)
9. Engine oil drain bolt (crankcase) (page 6-8)
10.Rear brake fluid reservoir (page 6-24)
11.Shock absorber assembly reboun
d damping force adjusting screw
(page 3-16)
12.Rear brake light switch (page 6-23)
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PERIODIC MAINTENANCE AND ADJUSTMENT
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12 And do not touch the radiator
pipe after high-speed operation,
otherwise the cooling system is
hot and cause burns. Always let
the engine oil cool down suffi-
ciently before removing the oil
tank cap.
[EWA16141]

NOTICE: Do not
operate the vehicle until you
know that the engine oil level is
sufficient.
[ECA10012]
4. The engine oil should be above the minimum level mark. If the engine
oil level is above the minimum lev-
el mark, continue to the next step.
If the engine oil level is below the
minimum level mark, remove the
engine oil filler cap and add the
recommended oil to bring the en-
gine oil level above the minimum
level mark.
5. Place an oil pan under the engine and then remove the engine oil
check bolt and gasket. 6. The engine oil level should be be-
low the level of the check bolt hole.
If any oil does come out, allow it to
drain.
7. Install the engine oil tank cap and
1. Engine oil tank cap
2. Engine oil filler cap
1
2
1. Engine oil tank cap
2. Dipstick
3. Minimum level mark
312
1. Engine oil check bolt
2. Gasket
1. Engine oil check bolt hole
21
1
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PERIODIC MAINTENANCE AND ADJUSTMENT
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EAU20071
CoolantThe coolant level should be checked
before each ride. In addition, the cool-
ant must be changed at the intervals
specified in the periodic maintenance
and lubrication chart.
EAUM1296
To check the coolant level 1. Place the vehicle on a level sur- face and hold it in an upright posi-
tion.TIP
The coolant level must be checked
on a cold engine since the level
varies with engine temperature.

Make sure that the vehicle is posi-
tioned straight up when checking
the coolant level. A slight tilt to theside can result in a false reading.
2. Remove the radiator cap and check the coolant level in the radi-
ator. WARNING! Never attempt
to remove the radiator cap when
the engine is hot.
[EWA10382]
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.
[ECA10473]
EAUM1316
To change the coolant1. 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
1. Radiator cap
1. Radiator filler neck
2. Correct coolant level
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2
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PERIODIC MAINTENANCE AND ADJUSTMENT
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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.
[EWA10382]
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 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.
EAU52933
Cleaning the air filter element
and check hoseThe 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 element
1. Open the air filter case cover by loosening the quick fastener screw
and pulling the case cover outward
as shown.
1. Coolant drain bolt
2. GasketTightening torque:Coolant drain bolt:
10 Nm (1.0 m·kgf, 7.2 ft·lbf)
21
Antifreeze/water mixture ratio:1:1
Recommended antifreeze:
High-quality ethylene glycol anti-
freeze containing co rrosion inhibitors
for aluminum engines
Coolant quantity: Radiator capacity (including all
routes):1.04 L (1.10 US qt, 0.92 Imp.qt)
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PERIODIC MAINTENANCE AND ADJUSTMENT
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12 Engine overheating
WARNING
EWAT1041

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
EAU58580
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)
Technical permissible mass (Maximum load +
Curb weight):
219 kg (483 lb)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: 12.3 : 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 element
Fuel: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
Gear ratio:
1st:2.417 (29/12)
–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
1DX-9-E3.book 1 ページ ２０１４年２月１７日　月曜日　午後２時２１分