2009 YAMAHA YFZ450R ECO mode

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by Yamaha Motor Co., Ltd. for this model.
Other tire combinations are not recommend-
ed.
Front:
Manufacturer/model:
DUNLOP/KT351 Radial
Size:
AT21 x 7R-10
Type:
Tubeless
Rear:
Manufacturer/model:
DUNLOP/KT356 Radial
Size:
AT20 x 10R-9
Type:
Tubeless

The tires should be set to the recommended
pressure:
Recommended tire pressure:
Front:
27.5 kPa (0.275 kgf/cm
2
, 4.0 psi)
Rear:
30.0 kPa (0.300 kgf/cm
2
, 4.4 psi)

Check and adjust tire pressures when the
tires are cold.

Tire pressures must be equal on both
sides.

Tire pressure below the minimum speci-
fied could cause the tire to dislodge from
the rim under severe riding conditions.
Minimum tire pressure:
Front:
24.5 kPa (0.245 kgf/cm
2
, 3.6 psi)
Rear:
27.0 kPa (0.270 kgf/cm
2
, 4.0 psi)

Use no more than the following pressures
when seating the tire beads.
Maximum tire seating pressure:
Front:
250 kPa (2.5 kgf/cm
2
, 36 psi)
Rear:
250 kPa (2.5 kgf/cm
2
, 36 psi)
Higher pressures and fast inflation may
cause a tire to burst. Inflate the tires very
slowly and carefully.
EBU19821
Measuring the tire pressure
Use the low-pressure tire gauge.
TIP

The low-pressure tire gauge is included as stan-

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EBU19880
OPERATION
EBU19900
Read the Owner’s Manual carefully before riding
the ATV.
WARNING

EWB00630
Read the Owner’s Manual carefully to become
familiar with all controls in order to help pre-
vent any loss of control, which could cause an
accident or injury. If there is a control or func-
tion you do not understand, ask your Yamaha
dealer.
EBU29482
Starting the engine
WARNING

EWB00640
Always make sure all control cables work
smoothly before you begin riding in cold
weather. If the control cables are frozen or do
not work smoothly, you could be unable to
control the ATV, which could lead to an acci-
dent or collision.NOTICE
ECB00150
See the “Engine break-in” section on page 6-4
prior to operating the engine for the first time.
1. Set the parking brake.
2. Turn the key to “ON” and the engine stop
switch to “ ”.
NOTICE

ECB00950
The coolant temperature warning light, fuel
level warning light and engine trouble warning
light should come on, then go off.
If a warning light does not go off, see page 4-2
for the corresponding warning light circuit
check.
3. Shift the transmission into neutral. The neutral
indicator light should come on, if it does not
come on, have a Yamaha dealer check the
electrical circuit.
TIP

This model is equipped with an ignition circuit cut-
off system. The engine can be started under the

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Recommended engine oil grade:
API service SG type or higher, JASO standard MA
Engine oil quantity:
Without oil filter element replacement:
1.40 L (1.48 US qt, 1.23 Imp.qt)
With oil filter element replacement:
1.45 L (1.53 US qt, 1.28 Imp.qt)
Cooling system:
Coolant reservoir capacity (up to the maximum level mark):
0.25 L (0.26 US qt, 0.22 Imp.qt)
Radiator capacity (including all routes):
1.25 L (1.32 US qt, 1.10 Imp.qt)
Air filter:
Air filter element:
Wet element
Fuel:
Recommended fuel:
Premium unleaded gasoline only
Fuel tank capacity:
10.0 L (2.64 US gal, 2.20 Imp.gal)
Fuel reserve amount:
3.4 L (0.90 US gal, 0.75 Imp.gal)
Fuel injection:
Throttle body:
Type/quantity:
42EHS/1
Spark plug (s):
Manufacturer/model:
NGK/CR8E
Spark plug gap:
0.7–0.8 mm (0.028–0.031 in)
Clutch:
Clutch type:
Wet, multiple-disc
Transmission:
Primary reduction system:
Spur gear
Primary reduction ratio:
61/23 (2.652)
Secondary reduction system:
Chain drive
Secondary reduction ratio:
38/14 (2.714)
Transmission type:
Constant mesh 5-speed
-20 -10 0
1020 304050 ˚C
SAE 15W-40
SAE 20W-40SAE 20W-50
SAE 10W-40
SAE 5W-30
SAE 10W-30

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Operation:
Left foot operation
1st:
35/14 (2.500)
2nd:
30/15 (2.000)
3rd:
31/19 (1.632)
4th:
28/21 (1.333)
5th:
23/21 (1.095)
Chassis:
Frame type:
Aluminum die-cast and steel tube frame
Caster angle:
5.0 °
Trail:
21.0 mm (0.83 in)
Front tire:
Type:
Tubeless
Size:
AT21 x 7R-10
Manufacturer/model:
DUNLOP/KT351 Radial
Rear tire:
Type:
Tubeless
Size:
AT20 x 10R-9Manufacturer/model:
DUNLOP/KT356 Radial
Loading:
Maximum loading limit:
100.0 kg (220 lb)
(Total weight of rider, cargo, accessories, and tongue)
Tire air pressure (measured on cold tires):
Recommended:
Front:
27.5 kPa (0.275 kgf/cm
2

, 4.0 psi)
Rear:
30.0 kPa (0.300 kgf/cm
2

, 4.4 psi)
Minimum:
Front:
24.5 kPa (0.245 kgf/cm
2

, 3.6 psi)
Rear:
27.0 kPa (0.270 kgf/cm
2

, 4.0 psi)
Front wheel:
Wheel type:
Panel wheel
Rim size:
10 x 5.5AT
Rear wheel:
Wheel type:
Panel wheel
Rim size:
9 x 8.5AT
Front brake:
Type:
Dual disc brake

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Operation:
Right hand operation
Recommended fluid:
DOT 4
Rear brake:
Type:
Single disc brake
Operation:
Right foot operation
Recommended fluid:
DOT 4
Front suspension:
Type:
Double wishbone
Spring/shock absorber type:
Coil spring/gas-oil damper
Wheel travel:
250 mm (9.9 in)
Rear suspension:
Type:
Swingarm (link suspension)
Spring/shock absorber type:
Coil spring/gas-oil damper
Wheel travel:
280 mm (11.0 in)
Electrical system:
Ignition system:
TCI (digital)
Charging system:
AC magneto
Battery:
Model:
YTZ-7S
Voltage, capacity:
12 V, 6.0 Ah
Headlight:
Bulb type:
Krypton bulb
Bulb voltage, wattage
×× × ×
quantity:
Headlight:
12 V, 30/30 W
×
2
Tail/brake light:
LED
Neutral indicator light:
LED
Fuel level warning light:
LED
Coolant temperature warning light:
LED
Engine trouble warning light:
LED
Fuses:
Main fuse:
20.0 A

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EBU26000
CONSUMER INFORMATION
EBU26011
Identification numbers
Record the key identification number, vehicle iden-
tification number and model label information in
the spaces provided below for assistance when or-
dering spare parts from a Yamaha dealer or for ref-
erence in case the ATV is stolen.

KEY IDENTIFICATION NUMBER:

VEHICLE IDENTIFICATION NUMBER:

MODEL LABEL INFORMATION:
EBU26020
Key identification number
The key identification number is stamped into the
key. Record this number in the space provided and
use it for reference when ordering a new key.
EBU26040
Vehicle identification number
The vehicle identification number is stamped into
the frame.
1. Key identification number

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The year of manufacture is listed in the vehicle
identification number as shown in the illustration.
TIP

The vehicle identification number is used to identi-
fy your ATV.
EBU26050
Model label
The model label is affixed at the location in the il-
lustration. Record the information on this label in
the space provided. This information will be need-
ed when ordering spare parts from a Yamaha deal-
er.
1. Vehicle identification number
1

1. Vehicle identification number
2. Year of manufacture