2010 YAMAHA WR 450F Owners Manual

1-15
MULTI-FUNCTION DISPLAY
Auto start
1. Check that changeover has been made to RACE MODE. (Refer to
"Changeover from BASIC MODE
to RACE MODE".)
2. Make the machine ready for a run by pushing the "SLCT1" button for
2 seconds or more.
When the measurement is made
ready for a run by auto start, and will start flashing. Timer display
will turn on scrolling from left to right.
3. Run the machine and start timer measurement.
4. To stop timer measurement, pushing the "SLCT1" button and
"SLCT2" button at the same time.
If the machine is run while timer mea-
surement is not made, no change will
occur to the digit in tripmeter A (TRIP
A).
5. To resume the measurement, again pushing the "SLCT1" button
and "SLCT2" button at the same
time. Resetting measurement data
Resetting can be made in the follow-
ing two manners.
Resetting is possible while timer
measurement is made:
• Reset tripmeter A.
Resetting is possible while timer
measurement is not made:
• Reset tripmeter A and timer.
Resetting tripmeter A (TRIP A)
1. Check that the timer is in opera-
tion. If the timer is not in opera-
tion, start the timer by pushing the
"SLCT1" button and "SLCT2" but-
ton at the same time.
2. Reset tripmeter A (TRIP A) dis-
play by pushing the "RST" button
for 2 seconds or more.
If reset, and travel distance dis-
play will go on flashing for four sec-
onds.
Resetting tripmeter A (TRIP A) and
timer
1. Check that the timer is not in op-eration. If the timer is in operation,
stop it by pushing the "SLCT1"
button and "SLCT2" button at the
same time.
2. Reset all measured data by push- ing the "RST" button for 2 sec-
onds or more.
• Resetting will reset the timer display
and travel distance display and put
measurement on standby.
• Auto start attempt will put measure-
ment on standby as such. Likewise,
manual start attempt will put mea-
surement on standby as such.
Correcting tripmeter A (TRIP A)
1. Change the travel distance dis- play by pushing the "SLCT1" but-
ton (plus) or "SLCT2" button
(minus). A long push on the but-
ton will fast-forward the change.
Change can be made any time while
timer measurement is or is not being
made.

1-16
MULTI-FUNCTION DISPLAY
FUNCTION DIAGRAM
A short push on the button changes
the operation in the arrowed direction.
A short push on the button changes
the operation in both arrowed directions.
A long push on the button changes the
operation in the arrowed direction.
A long push on the button changes the
operation in both arrowed directions.Meter function
Function that can be performed whether
the time is or is not in operation.
Extent to which the meter can operate
Clock
BASIC MODE
Tripmeter
ODO TRIP A TRIP B ODO
Speedometer
(for U.K.)
MPH
km/h MPH
Putting measurement on
standby
Manual startAuto start
RACE MODE
Timer in operation
Reset
TRIP A Correct
TRIP AMeasurement starts as the
machine moves
Timer not in
operation
Correct
TRIP A Reset
TRIP A &
timer

1-17
MULTI-FUNCTION DISPLAY
The following diagram illustrates the
multi-function display regarding the
direction and operation condition in-
volved in each of its functions.
A. A short push on the button changes the operation in the ar-
rowed direction.
B. A short push on the button changes the operation in both
arrowed directions.
C. A long push on the button changes the operation in the ar-
rowed direction.
D. A long push on the button changes the operation in both
arrowed directions.
E. Meter function
F. Function that can be performed whether the time is or is not in
operation.
G. Extent to which the meter can operate 1.
BASIC MODE
2. Clock
3. Trip meter
4. Speedometer (for U.K.)
5. RACE MODE
6. Putting measurement on stand- by
7. Manual start
8. Auto start
9. Measurement starts as the ma- chine moves
10. Timer in operation
11. Reset TRIP A
12. Correct TRIP A
13. Timer not in operation
14. Reset TRIP A & timer

1-18
STARTING AND BREAK-IN
STARTING AND BREAK-IN
FUEL
Always use the recommended fuel as
stated below. Also, be sure to use
new gasoline.
Use only unleaded gasoline. The
use of leaded gasoline will cause
severe damage to the engine inter-
nal parts such as valves, piston
rings, and exhaust system, etc.
If knocking or pinging occurs, use a
different brand of gasoline or higher
octane grade.
• For refueling, be sure to stop the
engine and use enough care not
to spill any fuel. Also be sure to
avoid refueling close to a fire.
• Refuel after the engine, exhaust pipe, etc. have cooled off.
Gasohol (For Canada)
There are two types of gasohol: gas-
ohol containing ethanol and that con-
taining methanol. Gasohol containing
ethanol can be used if the ethanol
content does not exceed 10%. Gaso-
hol containing methanol is not recom-
mended by Yamaha because it can
cause damage to the fuel system or
vehicle performance problems.
HANDLING NOTE
Never start or run the engine in a
closed area. The exhaust fumes
are poisonous; they can cause
loss of consciousness and death
in a very short time. Always oper-
ate the machine in a well-ventilated
area.
• The carburetor on this machine
has a built-in accelerator pump.
Therefore, when starting the en-
gine, do not operate the throttle
or the spark plug will foul. • Unlike a two-stroke engine, this
engine cannot be kick started
when the throttl e is open be-
cause the kickstarter may kick
back. Also, if the throttle is open
the air/fuel mixture may be too
lean for the engine to start.
• Before starting the machine, per- form the checks in the pre-opera-
tion check list.
AIR FILTER MAINTENANCE
According to "CLEANING THE AIR
FILTER ELEMENT" section in the
CHAPTER 3, apply the foam-air-filter
oil or its equivalent to the element.
(Excess oil in the element may ad-
versely affect engine starting.)
STARTING A COLD ENGINE
This model is equipped with an igni-
tion circuit cut-off system. The engine
can be started under the following
conditions.
• When the transmission is in neutral.
• When the clutch is disengaged with the transmission in any position.
However, it is recommended to shift
into neutral before starting the en-
gine.
1. Inspect the coolant level.
2. Turn the fuel cock to "ON".
3. Push on the main switch to "ON".
4. Shift the transmission into neutral.
5. Fully open the cold starter knob
"1".
6. Start the engine by pushing the start switch or by kicking the kick-
starter crank.
If the engine fails to start by pushing
the start switch, release the switch,
wait a few seconds, and then try
again. Each starting attempt should
be as short as possible to preserve
the battery. Do no t crank the engine
more than 10 seconds on any one at-
tempt. If the engine does not start
with the starter motor, try using the
kickstarter crank.
• If the starter mo tor will not turn
when pushing the start switch,
stop pushing it immediately and
kick start the engine in order to
avoid the load on the motor.
• Do not open the throttle while kicking the kickstarter crank.
Otherwise, the kickstarter crank
may kick back.
7. Return the cold starter knob to its
original position and run the en-
gine at 3,000–5,000 r/min for 1 or
2 minutes.
Since this model is equipped with an
accelerator pump, if the engine is
raced (the throttle opened and
closed), the air/fuel mixture will be too
rich and the engine may stall. Also
unlike a two-stroke engine, this model
can idle.
Do not warm up th e engine for ex-
tended periods of time.
STARTING A WARM ENGINE
Do not operate the cold starter knob
and throttle. Pull the hot starter lever
"1" and start the engine by pushing
the start switch or by kicking the kick-
starter crank forcefully with a firm
stroke. As soon as the engine starts,
Release the hot starter lever to close
the air passage.
Restarting an engine after a fall
Pull the hot starter lever and start the
engine. As soon as the engine starts,
Release the hot starter lever to close
the air passage.
Recommended fuel:
Premium unleaded
gasoline only with a re-
search octane number
of 95 or higher.

1-19
STARTING AND BREAK-IN
The engine fails to start
Pull the hot starter lever all the way
out and while holding the lever, kick
the kickstarter crank 10 to 20 times to
clear the engine. Then, restart the en-
gine. Refer to "Restarting an engine
after a fall".
Observe the following break-in
procedures during initial operation
to ensure optimum performance
and avoid engine damage.
BREAK-IN PROCEDURES
1. Before starting the engine, fill the fuel tank with the fuel.
2. Perform the pre-operation checks
on the machine.
3. Start and warm up the engine. Check the idle speed, and check
the operation of the controls and
the engine stop switch. Then, re-
start the engine and check its op-
eration within no more than 5
minutes after it is restarted.
4. Operate the machine in the lower
gears at moderate throttle open-
ings for five to eight minutes.
5. Check how the engine runs when
the machine is ridden with the
throttle 1/4 to 1/2 open (low to me-
dium speed) for about one hour.
6. Restart the engine and check the operation of the machine through-
out its entire operating range. Re-
start the machine and operate it
for about 10 to 15 more minutes.
After the break-in or before each
ride, you must check the entire ma-
chine for loose fi ttings and fasten-
ers as per "TORQUE-CHECK
POINTS". Tighten all such fasten-
ers as required.
Thro
ttle
grip op-
era-
tion* Cold
start- er
knob Hot
start-
er le- ver
St
ar
ti
n
g
a
c
ol
d
e
n
gi
n
e Air tempera-
ture = less
than 5 °C (41
°F)
Ope
n 3
or 4
time s ON OFF
Air tempera-
ture = more
than 5 °C (41
°F) Non
e ON OFF
Air tempera-
ture (normal
temperature)
= between 5
°C (41 °F)
and 25 °C
(77 °F) Non
e ON/
OFF OFF
Air tempera-
ture = more
than 25 °C
(77 °F) Non
e OFF OFF
Starting an en-
gine after a long
period of time Non
e ON OFF
Restarting a
warm engine Non
e OFF ON
Restarting an en-
gine after a fall Non
e OFF ON
* Operate the throttle grip before kick
starting.

1-20
TORQUE-CHECK POINTS
TORQUE-CHECK POINTS
Concerning the tightening torque, refer to "TIGHTENING TORQUES" section in the CHAPTER 2.
Frame construction Frame to rear frameCombined seat and fuel tank Fuel tank to frame
Exhaust system Silencer to rear frame
Engine mounting Frame to engine Engine bracket to engine
Engine bracket to frame
Steering Steering stem to handlebar Steering stem to frame Steering stem to upper bracket
Upper bracket to handlebar
Suspension Front Steering stem to front fork Front fork to upper bracket
Front fork to lower bracket
Rear For link type Assembly of links Link to frame
Link to rear shock absorber
Link to swingarm
Installation of rear shock absorber Rear shock absorber to frame
Installation of swingarm Tightening of pivot shaft
Wheel Installation of wheel Front Tightening of wheel axle Tightening of axle holder
Rear Tightening of wheel axle Wheel to rear wheel sprocket
Brake Front Brake caliper to front fork Brake disc to wheel
Tightening of union bolt
Brake master cylinder to handlebar
Tightening of bleed screw
Tightening of brake hose holder
Rear Brake pedal to frame Brake disc to wheel
Tightening of union bolt
Brake master cylinder to frame
Tightening of bleed screw
Tightening of brake hose holder
Fuel system Fuel tank to fuel cock
Lubrication system Tighteni ng of oil hose clamp

1-21
CLEANING AND STORAGE
CLEANING AND STORAGE
CLEANING
Frequent cleaning of your machine
will enhance its appearance, maintain
good overall performance, and ex-
tend the life of many components.
1. Before washing the machine, block off the end of the exhaust
pipe to prevent water from enter-
ing. A plastic bag secured with a
rubber band may be used for this
purpose.
2. If the engine is excessively greasy, apply some degreaser to
it with a paint brush. Do not apply
degreaser to the chain, sprockets,
or wheel axles.
3. Rinse the dirt and degreaser off with a garden hose; use only
enough pressure to do the job.
Do not use high-pressure washers
or steam-jet cleaners since they
cause water seepage and deterio-
ration seals.
4. After the majority of the dirt has
been hosed off, wash all surfaces
with warm water and a mild deter-
gent. Use an old toothbrush to
clean hard-to-reach places.
5. Rinse the machine off immediate- ly with clean water, and dry all
surfaces with a soft towel or cloth.
6. Immediately after washing, re- move excess water from the
chain with a paper towel and lubri-
cate the chain to prevent rust.
7. Clean the seat with a vinyl uphol-
stery cleaner to keep the cover
pliable and glossy.
8. Automotive wax may be applied
to all painted or chromed surfac-
es. Avoid combination cleaner-
waxes, as they may contain abra-
sives.
9. After completing the above, start the engine and allow it to idle for
several minutes. STORAGE
If your machine is to be stored for 60
days or more, some preventive mea-
sures must be taken to avoid deterio-
ration. After cleaning the machine
thoroughly, prepare it for storage as
follows:
1. Drain the fuel tank, fuel lines, and
the carburetor float bowl.
2. Remove the spark plug, pour a ta-
blespoon of SAE 10W-40 motor
oil in the spark plug hole, and re-
install the plug. With the engine
stop switch pushed in, kick the en-
gine over several times to coat the
cylinder walls with oil.
3. Remove the drive chain, clean it thoroughly with solvent, and lubri-
cate it. Reinstall the chain or store
it in a plastic bag tied to the frame.
4. Lubricate all control cables.
5. Block the frame up to raise the
wheels off the ground.
6. Tie a plastic bag over the exhaust pipe outlet to prevent moisture
from entering.
7. If the machine is to be stored in a humid or salt-air environment,
coat all exposed metal surfaces
with a film of light oil. Do not apply
oil to rubber parts or the seat cov-
er.
Make any necessary repairs before
the machine is stored.

2-1
GENERAL SPECIFICATIONS
SPECIFICATIONS
GENERAL SPECIFICATIONS
Model name: WR450FZ (USA, CDN, AUS, NZ)WR450F (EUROPE, ZA)
Model code number: 5TJT (USA) 5TJU (CDN)
5TJV (EUROPE)
5TJW (AUS, NZ, ZA)
Dimensions: USA, CDN, ZA EUROPE AUS, NZ
Overall length 2,175 mm (85.63 in)2,200 mm (86.61
in)2,185 mm (86.02
in)
Overall width 825 mm (32.48 in) ←←
Overall height 1,300 mm (51.18 in)1,305 mm (51.38
in)←
Seat height 980 mm (38.58 in) 990 mm (38.98 in) 985 mm (38.78 in)
Wheelbase 1,485 mm (58.46 in)1,500 mm (59.06
in)1,485 mm (58.46
in)
Minimum ground clearance 365 mm (14.37 in) ←←
Weight: USA, ZA CDN EUROPE AUS, NZ With oil and fuel 122.8 kg (270.7 lb)122.7 kg
(270.5 lb) 122.5 kg
(270.1 lb) 122.6 kg
(270.3 lb)
Engine: Engine type Liquid cooled 4-stroke, DOHC
Cylinder arrangement Single cylinder, forward inclined
Displacement 449 cm
3 (15.8 Imp oz, 15.2 US oz)
Bore × stroke 95.0 × 63.4 mm (3.74 × 2.50 in)
Compression ratio 12.3 : 1
Starting system Kick and electric starter
Lubrication system: Dry sump
Oil type or grade: Engine oil Recommended brand: YAMALUBE SAE 10W-30, SAE 10W-40, SAE 10W-50,
SAE 15W-40, SAE 20W-40 or SAE 20W-50
API service SG type or higher,
JASO standard MA
Oil capacity: Engine oilPeriodic oil change 0.95 L (0.84 Imp qt, 1.00 US qt)
With oil filter replacement 1.0 L (0.88 Imp qt, 1.06 US qt)
Total amount 1.2 L (1.06 Imp qt, 1.27 US qt)
Coolant capacity (including all routes): 1.0 L (0.88 Imp qt, 1.06 US qt)
Air filter: Wet type element