check engine YAMAHA WR 450F 2014 Owner's Manual

PERIODIC MAINTENANCE AND ADJUSTMENT
6-17
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EAU52460
Adjusting the engine idling
speed The engine idling speed must be
checked and, if necessary, adjusted as
follows.TIPA digital tachometer is needed to makethis adjustment.1. Position the digital tachometer at the ignition coil, which is located in
the spark plug cap.
2. Check the engine idling speed and, if necessary, adjust it to spec-
ification by turning the starter
knob/idle adjusting screw. To in-
crease the engine idling speed,
turn the screw in direction (a). To
decrease the engine idling speed,
turn the screw in direction (b).
TIPIf the specified idling speed cannot be
obtained as described above, have aYamaha dealer make the adjustment.
EAU21384
Checking the throttle grip free
play The throttle grip free play should mea-
sure 3.0–5.0 mm (0.12–0.20 in) at the
inner edge of the throttle grip. Periodi-
cally check the throttle grip free play
and, if necessary, have a Yamaha
dealer adjust it.
1. Starter knob/idle adjusting screwEngine idling speed:1900–2100 r/min
1(a)
(b)
1. Throttle grip free play
1
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-18
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EAU21401
Valve clearance The valve clearance changes with use,
resulting in improper air-fuel mixture
and/or engine noise. To prevent this
from occurring, the valve clearance
must be adjusted by a Yamaha dealer
at the intervals specified in the periodic
maintenance and lubrication chart.
EAU52881
Tires Tires are the only contact between the
vehicle and the road. Safety in all con-
ditions of riding depends on a relatively
small area of road contact. Therefore, it
is essential to maintain the tires in good
condition at all times and replace them
at the appropriate time with the speci-
fied tires.
Tire air pressure
The tire air pressure should be checked
and, if necessary, adjusted before each
ride.
WARNING
EWA10441
Operation of this vehicle with im-
proper tire pressure may cause se-
vere injury or death from loss of
control.
The tire air pressure must be
checked and adjusted on cold
tires (i.e., when the temperature
of the tires equals the ambient
temperature).

The tire air pressure must be ad-
justed in accordance with the
riding speed and with the totalweight of rider, cargo, and ac-
cessories approved for this
model.WARNING
EWA10511
Never overload your vehicle. Opera-
tion of an overloaded vehicle couldcause an accident.
Tire air pressure (measured on cold
tires):
0–90 kg (0–198 lb):Front: 150 kPa (1.50 kgf/cm
2, 22 psi)
Rear: 200 kPa (2.00 kgf/cm2, 29 psi)
Maximum load*:
90 kg (198 lb)
* Total weight of rider, cargo and ac- cessories
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PERIODIC MAINTENANCE AND ADJUSTMENT
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EAU23283
Checking the steering Worn or loose steering bearings may
cause danger. Therefore, the operation
of the steering must be checked as fol-
lows at the intervals specified in the pe-
riodic maintenance and lubrication
chart.1. Place a stand under the engine to raise the front wheel off the
ground. (See page 6-36 for more
information.) WARNING! To
avoid injury, securely support
the vehicle so there is no danger
of it falling over.
[EWA10751]

2. Hold the lower ends of the front fork legs and try to move them for-
ward and backward. If any free
play can be felt, have a Yamaha
dealer check or repair the steering.
EAU23291
Checking the wheel bearings The front and rear wheel bearings must
be checked at the intervals specified in
the periodic maintenance and lubrica-
tion chart. If there is play in the wheel
hub or if the wheel does not turn
smoothly, have a Yamaha dealer check
the wheel bearings.
EAU52491
Battery The battery is located under the seat.
(See page 3-13.)
This model is equipped with a VRLA
(Valve Regulated Lead Acid) battery.
There is no need to check the electro-
lyte or to add distilled water. However,
the battery lead connections need to be
checked and, if necessary, tightened.
WARNING
EWA10760

Electrolyte is poisonous and
dangerous since it contains sul-
furic acid, which causes severe
burns. Avoid any contact with
1. Negative battery lead (black)
2. Positive battery lead (red)
3. Battery
1
2
3
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-36
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567
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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 frame in front of the rear wheel or under
each side of the swingarm.
1. Auxiliary light bulb
1
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PERIODIC MAINTENANCE AND ADJUSTMENT
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EAU53122
Troubleshooting charts Starting problems or poor engine performance
Check the fuel level in
the fuel tank.1. Fuel
There is enough fuel.There is no fuel.
Check the compression.
Supply fuel.
The engine does not start.
Check the battery.
Operate the electric starter
or the kickstarter.4. Compression
There is compression.
There is no compression.
The engine does not start. Have a
Yamaha dealer check the vehicle. Have a Yamaha dealer
check the vehicle.
Remove the spark plug
and check the electrodes.3. Ignition
Wipe off with a dry cloth and correct the
spark plug gap, or replace the spark plug.
Have a Yamaha dealer check the vehicle.
The engine does not start.
Check the compression.
DryWet
Operate the electric starter or the
kickstarter. The engine does not start.
Check the ignition.
Operate the electric starter.2. Battery
The engine turns over
quickly.
The engine turns over
slowly.
The battery is good.Check the battery lead connections,
and have a Yamaha dealer charge
the battery if necessary.
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PERIODIC MAINTENANCE AND ADJUSTMENT
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Engine 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
used 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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MOTORCYCLE CARE AND STORAGE
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stabilizer (if available) to prevent
the fuel tank from rusting and the
fuel from deteriorating.
3. Perform the following steps to pro- tect the cylinder, piston rings, etc.
from corrosion.
a. Remove the spark plug cap and spark plug.
b. Pour a teaspoonful of engine oil into the spark plug bore.
c. Install the spark plug cap onto the spark plug, and then place
the spark plug on the cylinder
head so that the electrodes are
grounded. (This will limit spark-
ing during the next step.)
d. Turn the engine over several times with the starter. (This will
coat the cylinder wall with oil.)
e. Remove the spark plug cap from the spark plug, and then
install the spark plug and the
spark plug cap. WARNING! To
prevent damage or injury
from sparking, make sure to
ground the spark plug elec-
trodes while turning the en-
gine over.
[EWA10951]

4. Lubricate all control cables and the pivoting points of all levers and
pedals as well as of the sidestand/
centerstand.
5. Check and, if necessary, correct the tire air pressure, and then lift
the motorcycle so that both of its
wheels are off the ground. Alterna-
tively, turn the wheels a little every
month in order to prevent the tires
from becoming degraded in one
spot.
6. Cover the muffler outlet with a plastic bag to prevent moisture
from entering it.
7. Remove the battery and fully charge it. Store it in a cool, dry
place and charge it once a month.
Do not store the battery in an ex-
cessively cold or warm place [less
than 0 C (30 F) or more than 30
 C (90 F)]. For more information
on storing the battery, see page
6-30.
TIPMake any necessary repairs beforestoring the motorcycle.
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INDEXAAir filter element and check hose, cleaning .................................................6-14
Auxiliary light bulb, replacing ...................6-35BBattery......................................................6-30
Brake and clutch levers, checking and lubricating ..............................................6-27
Brake fluid, changing ...............................6-24
Brake fluid level, checking .......................6-23
Brake lever .................................................3-8
Brake lever free play, checking ................6-21
Brake light switches .................................6-22
Brake pedal ................................................3-9
Brake pedal, checking and lubricating .....6-28CCables, checking and lubricating .............6-27
Care ...........................................................7-1
Catalytic converter ...................................3-11
Clutch lever ................................................3-8
Clutch lever free play, adjusting ...............6-20
Coolant.....................................................6-12DDimmer switch ...........................................3-7
Drive chain, cleaning and lubricating .......6-26
Drive chain slack ......................................6-25EEngine break-in ..........................................5-4
Engine idling speed..................................6-17
Engine oil and oil filter element ..................6-8
Engine, starting a warm .............................5-3
Engine stop switch .....................................3-7
Engine trouble warning light.......................3-2
FFront and rear brake pads, checking ....... 6-23
Front fork, adjusting ................................. 3-14
Front fork, bleeding.................................. 3-15
Front fork, checking ................................. 6-29
Fuel.......................................................... 3-10
Fuel consumption, tips for reducing........... 5-4
Fuel level warning light .............................. 3-2
Fuel tank breather hose........................... 3-11
Fuel tank cap ............................................. 3-9
Fuse, replacing ........................................ 6-32HHandlebar switches ................................... 3-7
Headlight bulb, replacing ......................... 6-32
High beam indicator light ........................... 3-2
Horn switch ................................................ 3-7IIdentification numbers ............................... 9-1
Ignition circuit cut-off system ................... 3-19
Indicator lights and warning lights ............. 3-1KKickstarter................................................ 3-12LLicense plate light bulb, replacing ........... 6-35MMain switch ................................................ 3-1
Maintenance and lubrication, periodic ....... 6-4
Maintenance, emission control system...... 6-3
Matte color, caution ................................... 7-1
Model label ................................................ 9-1
Multi-function display ................................. 3-2NNeutral indicator light ................................. 3-1
PPanel, removing and installing .................. 6-7
Parking ...................................................... 5-5
Part locations ............................................ 2-1SSafety information ..................................... 1-1
Seat ......................................................... 3-13
Shifting ...................................................... 5-3
Shift pedal ................................................. 3-8
Shift pedal, checking ............................... 6-22
Shock absorber assembly, adjusting ...... 3-16
Sidestand ................................................ 3-18
Sidestand, checking an d lubricating........ 6-28
Spark plug, checking ................................. 6-7
Specifications ............................................ 8-1
Starter knob............................................. 3-12
Starting a cold engine ............................... 5-1
Start switch................................................ 3-7
Steering, checking................................... 6-30
Steering lock ........................................... 3-13
Storage...................................................... 7-3
Supporting the motorcycle ...................... 6-36
Swingarm pivots, lubricating ................... 6-29TTail/brake light ......................................... 6-34
Throttle grip and cable, checking and lubricating ............................................. 6-27
Throttle grip free play, checking .............. 6-17
Tires ........................................................ 6-18
Tool kit....................................................... 6-2
Troubleshooting ...................................... 6-40
Troubleshooting charts............................ 6-41
Turn signal indicator light .......................... 3-1
Turn signal light bulb, replacing .............. 6-34
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