2012 YAMAHA WR 450F check engine light

TABLE OF CONTENTSSAFETY INFORMATION .................. 1-1
DESCRIPTION .................................. 2-1
Left view .......................................... 2-1
Right view ........................................ 2-2
Controls and instrument s................. 2-3
INSTRUMENT AND CONTROL
FUNCTIONS ....................................... 3-1
Main switch ..................................... 3-1
Indicator lights and warning
lights ............................................ 3-1
Multi-function display ...................... 3-2
Handlebar switches ........................ 3-7
Clutch lever ..................................... 3-8
Shift pedal ...... ............................. .... 3-8
Brake lever ..................................... 3-8
Brake pedal .................................... 3-9
Fuel tank cap .................................. 3-9
Fuel ............................................... 3-10
Fuel tank breather hose ................ 3-11
Catalytic converter ........................ 3-11
Starter knob .................................. 3-12
Kickstarter ...... ............................. .. 3-12
Steering lock ................................. 3-13
Seat .............................................. 3-13
Adjusting the front fork .................. 3-14
Front fork bleeding ........................ 3-15
Adjusting the shock absorber assembly ................................... 3-16
Sidestand ...................................... 3-18 Ignition circuit cut-o
ff system ........ 3-19
FOR YOUR SAFETY –
PRE-OPERATION CHECKS ............. 4-1
OPERATION AND IMPORTANT
RIDING POINTS ................................. 5-1
Starting a cold engine .................... 5-1
Starting a warm engine .................. 5-2
Shifting ........................................... 5-3
Tips for reducing fuel
consumption ............................... 5-3
Engine break-in .............................. 5-4
Parking ........................................... 5-5
PERIODIC MAINTENANCE AND
ADJUSTMENT ................................... 6-1
Owner’s tool kit ............................... 6-2
Periodic maintenance chart for the emission control system ............. 6-3
General maintenance and lubrication chart .......................... 6-4
Removing and installing the
panel ........................................... 6-7
Checking the spark plug ................. 6-7
Engine oil and oil filter element ...... 6-8
Coolant ......................................... 6-12
Cleaning the air filter element
and check hose ......................... 6-14
Adjusting the engine idling speed ........................................ 6-17 Checking the throttle grip free
play ............................................ 6-17
Valve clearance ............................ 6-18
Tires .............................................. 6-18
Spoke wheels ............................... 6-20
Adjusting the clutch lever free play ............................................ 6-20
Checking the brake lever free
play ............................................ 6-21
Checking the shift pedal ............... 6-22
Brake light switches ...................... 6-22
Checking the front and rear brake pads ................................. 6-22
Checking the brake fluid level ....... 6-23
Changing the brake fluid ............... 6-24
Drive chain slack ........................... 6-24
Cleaning and lubricating the
drive chain ................................. 6-26
Checking and lubricating the cables ........................................ 6-26
Checking and lubricating the throttle grip and cable ................ 6-27
Checking and lubricating the
brake and clutch levers ............. 6-27
Checking and lubricating the
brake pedal ................................ 6-28
Checking and lubricating the sidestand ................................... 6-28
Lubricating the swingarm pivots ... 6-28
Checking the front fork .................. 6-29
Checking the steering ................... 6-291DX-9-E0.book 1 ページ ２０１１年１０月１０日　月曜日　午後２時１４分

INSTRUMENT AND CONTROL FUNCTIONS
3-2
234
5
6
7
8
9
EAU11080
High beam indicator light “ ”
This indicator light comes on when the
high beam of the headlight is switched
on.
EAU52390
Fuel level warning light “ ”
This warning light comes on when the
fuel level drops below approximately
3.0 L (0.79 US gal, 0.66 Imp.gal). When
this occurs, refuel as soon as possible.
The electrical circuit of the warning light
can be checked by pushing the main
switch to “ON”. The warning light
should come on for a few seconds, and
then go off.
If the warning light does not come on
initially when the main switch is pushed
to “ON”, or if the warning light remains
on, have a Yamaha dealer check the
electrical circuit.
EAU52400
Engine trouble warning light “ ”
This warning light comes on or flashes
if a problem is detected in the electrical
circuit monitoring the engine. If this oc-
curs, have a Yamaha dealer check the
vehicle. The electrical circuit of the warning light
can be checked by pushing the main
switch to “ON”. The warning light
should come on for a few seconds, and
then go off.
If the warning light does not come on
initially when the main switch is pushed
to “ON”, or if the warning light remains
on, have a Yamaha dealer check the
electrical circuit.
EAU52922
Multi-function display
WARNING
EWA12312
Be sure to stop the vehicle before
making any setting changes to the
multi-function display. Changing
settings while riding can distract the
operator and increase the risk of anaccident.1. “RST” button
2. “SLCT 1” button
3. “SLCT 2” button
4. Clock/stopwatch
5. Speedometer
6. Odometer/tripmeter
123
4
6
5
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5-1
2
3
456
7
8
9
OPERATION AND IMPORTANT RIDING POINTS
EAU15951
Read the Owner’s Manual carefully to
become familiar with all controls. If
there is a control or function you do not
understand, ask your Yamaha dealer.
WARNING
EWA10271
Failure to familiarize yourself with
the controls can lead to loss of con-
trol, which could cause an accidentor injury.
EAU53110
TIPThis model is equipped with a lean an-
gle sensor to stop the engine in case of
a turnover. To start the engine after a
turnover, be sure to push the main
switch to “OFF” and then to “ON”. Fail-
ing to do so will prevent the engine from
starting even though the engine willcrank when pushing the start switch.
EAU52903
Starting a cold engine In order for the ignition circuit cut-off
system to enable starting, one of the
following conditions must be met:
The transmission is in the neutral
position.

The transmission is in gear with
the clutch lever pulled and the sid-
estand up.
See page 3-19 for more informa-
tion.
1. Push the main swtch to “ON” and make sure that the engine stop
switch is set to “ ”.
The following warning light should
come on for a few seconds, then
go off.
Fuel level warning light

Engine trouble warning light
NOTICE
ECA17781
If a warning light does not come on
initially when the main switch is
pushed to “ON”, or if a warning light
remains on, see page 3-1 for the cor-
responding warning light circuitcheck.
2. Shift the transmission into the neu-
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OPERATION AND IMPORTANT RIDING POINTS
5-2
1
2
3
45
6
7
8
9tral position. The neutral indicator
light should come on. If not, ask a
Yamaha dealer to check the elec-
trical circuit.
3. Turn the starter on and completely close the throttle. (See page 3-12.)
4. Start the engine by pushing the start switch or by pushing the kick-
starter lever down.
NOTICE
ECA17800
If the starter motor will not turn when
pushing the start switch, stop push-
ing it immediately and start the en-
gine by pushing the kickstarter lever
down in order to avoid the load onthe motor.TIPUse the kickstarter in a condition with
ambient temperature below –5 C (40F) or high altitude.
If the engine fails to start when us-
ing the start switch, release it, wait
a few seconds, and then try again.
Each starting attempt should be as
short as possible to preserve the
battery. Do not crank the engine more than 10 seconds on any one
attempt. If the engine does not
start with the starter motor, try us-
ing the kickstarter.
5. When the engine is warm, turn the starter off.
TIPThe engine is warm when it responds
quickly to the throttle with the starterturned off.NOTICE
ECA11042
For maximum engine life, never ac-
celerate hard when the engine iscold!
EAU52971
Starting a warm engine Follow the same procedure as for start-
ing a cold engine with the exception
that the starter is not required when the
engine is warm.TIP
If the engine does not start at high
altitude, start the engine with the
throttle grip opened by one degree
or two degrees.

The mark on the throttle housing
indicates five degrees. Use the
mark for your reference whenopening the throttle grip.
1. Mark
1
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-7
1
2
3
4
56
7
8
9
EAU18751
Removing and installing the
panel The panel shown needs to be removed
to perform some of the maintenance
jobs described in this chapter. Refer to
this section each time the panel needs
to be removed and installed.
EAU52872
Panel A
To remove the panel1. Remove the seat. (Seepage 3-13.)
2. Remove the bolts. 3. Pull the front part of the panel out-
ward, and then remove the panel
by pulling it off.
To install the panel
1. Place the panel in the original posi- tion, and then install the bolts.
2. Install the seat.
EAU19622
Checking the spark plug The spark plug is an important engine
component, which should be checked
periodically, preferably by a Yamaha
dealer. Since heat and deposits will
cause any spark plug to slowly erode, it
should be removed and checked in ac-
cordance with the periodic mainte-
nance and lubrication chart. In addition,
the condition of the spark plug can re-
veal the condition of the engine.
The porcelain insulator around the cen-
ter electrode of the spark plug should
be a medium-to-light tan (the ideal color
when the vehicle is ridden normally). If
the spark plug shows a distinctly differ-
ent color, the engine could be operating
improperly. Do not attempt to diagnose
such problems yourself. Instead, have
a Yamaha dealer check the vehicle.
If the spark plug shows signs of elec-
trode erosion and excessive carbon or
other deposits, it should be replaced.
Before installing a spark plug, the spark
plug gap should be measured with a
1. Panel A
1
1. Bolt
1 1
Specified spark plug:NGK/CR8E
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-8
2
3
4
567
8
9
wire thickness gauge and, if necessary,
adjusted to specification.
Clean the surface of the spark plug
gasket and its mating surface, and then
wipe off any grime from the spark plug
threads.
TIPIf a torque wrench is not available when
installing a spark plug, a good estimate
of the correct torque is 1/4–1/2 turn past finger tight. However, the spark
plug should be tightened to the speci-
fied torque as soon as possible.
EAU52963
Engine oil and oil filter
element The engine oil level should be checked
before each ride. In addition, the oil
must be changed and the oil filter ele-
ment replaced at the intervals specified
in the periodic maintenance and lubri-
cation chart. A slight tilt to the side can
result in a false reading.
To check the engine oil level
1. Place the vehicle on a level sur- face and hold it in an upright posi-
tion.
2. Start the engine, warm it up for several minutes, and then turn it
off.
3. Wait a few minutes until the oil set- tles, remove the oil tank cap, wipe
the dipstick clean, insert it back
into the oil tank (without screwing it
in), and then remove it again to
check the oil level. WARNING!
Never remove the engine oil
tank cap after high-speed oper-
ation, otherwise hot engine oil
could spout out and cause dam-
age or injury. And do not touch
1. Spark plug gapSpark plug gap: 0.7–0.8 mm (0.028–0.031 in)
Tightening torque: Spark plug: 13 Nm (1.3 m·kgf, 9.4 ft·lbf)
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-12
2
3
4
567
8
9
it for oil leakage. If oil is leaking, im-
mediately turn the engine off and
check for the cause.
13. Turn the engine off, wait a few min- utes until the oil settles, and then
check the oil level and correct it if
necessary.
14. Install the engine guard.
NOTICE
ECA11231
After changing the engine oil, make
sure to check the oil pressure as de-
scribed below.
Loosen the bleed bolt.

Start the engine and keep it
idling until oil flows out. If no oil
comes out after one minute,
turn the engine off immediately
so it will not seize. If this occurs,
have a Yamaha dealer repair the
vehicle.

After checking the oil pressure,
tighten the bleed bolt to thespecified torque.
EAU20070
Coolant The 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.
EAUM1295
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.
[EWA10381]

Tightening torque: Engine guard: 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
1. Bleed bolt
2. GasketTightening torque:Bleed bolt:
10 Nm (1.0 m·kgf, 7.2 ft·lbf)
21
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-35
1
2
3
4
56
7
8
93. Remove the burnt-out bulb by pull-
ing it out.
4. Insert a new bulb into the socket.
5. Install the socket (together with the bulb) by pushing it in.
6. Install the license plate light unit by installing the screws.
EAU45224
Replacing an auxiliary light
bulb If the auxiliary light bulb burns out, re-
place it as follows.1. Remove the headlight unit. (See page 6-32.)
2. Remove the auxiliary light bulb socket (together with the bulb) by
pulling it out.
3. Remove the burnt-out bulb by pull- ing it out.
4. Insert a new bulb into the socket.
5. Install the socket (together with the bulb) by pushing it in.
6. Install the headlight unit.
EAU24350
Supporting the motorcycle Since this model is not equipped with a
centerstand, follow these precautions
when removing the front and rear
wheel or performing other maintenance
requiring the motorcycle to stand up-
right. Check that the motorcycle is in a
stable and level position before starting
any maintenance. A strong wooden
box can be placed under the engine for
added stability.
To service the front wheel 1. Stabilize the rear of the motorcycle by using a motorcycle stand or, if
an additional motorcycle stand is
not available, by placing a jack un-
der the frame in front of the rear
wheel.
2. Raise the front wheel off the ground by using a motorcycle
stand.
To service the rear wheel
Raise the rear wheel off the ground by
using a motorcycle stand or, if a motor-
cycle stand is not available, by placing
a jack either under each side of the
1. License plate light unit
2. License plate light bulb socket
1 2
1. Auxiliary light bulb socket
1
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