check engine YAMAHA WR 450F 2015 Owner's Manual

PERIODIC MAINTENANCE AND ADJUSTMENT
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
Apply the lithium soap base
grease on the matching surface onthe sponge material.
6. Insert the air filter element into the air filter case. NOTICE: Make sure
that the air filter element is prop-
erly seated in the air filter case.
The engine should never be op-
erated without the air filter ele-
ment installed, otherwise the
piston(s) and/or cylinder(s) may
become excessively worn.
[ECA10482]
TIPAlign the projection on the air filter ele-
ment with the hole in the air filter case.
7. Place the holding clip in the origi- nal position.TIPHook the holding clip so that it contactsthe filter guide projections. 8. Close the air filter case cover, and
then tighten the quick fastener
screw.
To clean the air filter check hose 1. Check the hose at the bottom of the air filter case for accumulated
dirt or water.
1. Projection
2. Hole
3. Matching surface
1 23
1. Hole
2. Projection
3. Air filter element
1 2
3
1. Holding clip
2. Projection
1
2
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-17
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12 2. If dirt or water is visible, remove
the hose, clean it, and then install
it.
EAU52461
Adjusting the engine idling
speedThe 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.
1. Air filter check hose
1
1. Starter knob/idle adjusting screwEngine idling speed:1900–2100 r/min
1(a)
(b)
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-18
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EAU21385
Checking the throttle grip free
playThe 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.
EAU21402
Valve clearanceThe 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.
EAU52883
TiresTires 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
EWA10442
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 total
1. Throttle grip free play
1
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-27
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EAU23026
Cleaning and l ubricating the
drive chainThe drive chain must be cleaned and
lubricated at the intervals specified in
the periodic maintenance and lubrica-
tion chart, otherwise it will quickly wear
out, especially when riding in dusty or
wet areas. Service the drive chain as
follows.NOTICE
ECA10584
The drive chain must be lubricated
after washing the motorcycle, ridingin the rain or riding in wet areas.
1. Clean the drive chain with kero- sene and a small soft brush.
NOTICE: To prevent damaging
the O-rings, do not clean the
drive chain with steam cleaners,
high-pressure washers or inap-
propriate solvents.
[ECA11122]
2. Wipe the drive chain dry.
3. Thoroughly lubricate the drive chain with a special O-ring chain
lubricant. NOTICE: Do not use
engine oil or any other lubri-
cants for the drive chain, as they may contain substances that
could damage the O-rings.
[ECA11112]
EAU23098
Checking and lubricating the
cablesThe operation of all control cables and
the condition of the cables should be
checked before each ride, and the ca-
bles and cable ends should be lubricat-
ed if necessary. If a cable is damaged
or does not move smoothly, have a
Yamaha dealer check or replace it.
WARNING! Damage to the outer
housing of cables may result in in-
ternal rusting and cause interfer-
ence with cable movement. Replace
damaged cables as soon as possi-
ble to prevent unsafe condi-
tions.
[EWA10712]
Recommended lubricant:
Yamaha cable lubricant or other suit-
able cable lubricant
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PERIODIC MAINTENANCE AND ADJUSTMENT
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EAU23273
Checking the front forkThe condition and operation of the front
fork must be checked as follows at the
intervals specified in the periodic main-
tenance and lubrication chart.
To check the condition
Check the inner tubes for scratches,
damage and excessive oil leakage.
To check the operation 1. Place the vehicle on a level sur- face and hold it in an upright posi-
tion. WARNING! To avoid injury,
securely support the vehicle so
there is no danger of it falling
over.
[EWA10752]
2. While applying the front brake, push down hard on the handlebars
several times to check if the front
fork compresses and rebounds
smoothly.
NOTICE
ECA10591
If any damage is found or the front
fork does not operate smoothly,
have a Yamaha dealer check or re-pair it.
EAU23284
Checking the steeringWorn 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 6-37 for more
information.) WARNING! To
avoid injury, securely support
the vehicle so there is no danger
of it falling over.
[EWA10752]
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.
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-37
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EAU24351
Supporting the motorcycleSince 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 avai lable, by placing
a jack either under each side of the frame in front of the rear wheel or under
each side of the swingarm.
EAU24361
Front wheel
EAU56321
To remove the front wheel
WARNING
EWA10822
To avoid injury, securely support the
vehicle so there is no danger of itfalling over.
1. Remove the rubber cap, and then loosen the front wheel axle pinch
bolts and the axle nut.1. Front wheel axle pinch bolt
2. Axle nut
3. Rubber cap
23
1
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PERIODIC MAINTENANCE AND ADJUSTMENT
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EAU53123
Troubleshooting chartsStarting 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
6-43
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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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MOTORCYCLE CARE AND STORAGE
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12 2. Fill up the fuel tank and add fuel
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.
[EWA10952]
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
6-31.TIPMake any necessary repairs beforestoring the motorcycle.
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10-1
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INDEXAAir filter element and check hose, cleaning .................................................6-14
Auxiliary light bulb, replacing ...................6-36BBattery......................................................6-31
Brake and clutch levers, checking and lubricating ..............................................6-28
Brake fluid, changing ...............................6-25
Brake fluid level, checking .......................6-24
Brake lever .................................................3-8
Brake lever free play, checking ................6-22
Brake light switches .................................6-23
Brake pedal ................................................3-9
Brake pedal, checking and lubricating .....6-29CCables, checking and lubricating .............6-27
Care ...........................................................7-1
Catalytic converter ...................................3-11
Clutch lever ................................................3-8
Clutch lever free play, adjusting ...............6-21
Coolant.....................................................6-13DDimmer switch ...........................................3-7
Drive chain, cleaning and lubricating .......6-27
Drive chain slack ......................................6-25EEngine break-in ..........................................5-4
Engine idling speed..................................6-17
Engine oil and oil filter element ..................6-8
Engine serial number .................................9-1
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 ................................. 6-30
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 ......................... 6-33
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 ................................................ 9-2
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 ............................... 6-23
Shock absorber assembly, adjusting ...... 3-16
Sidestand ................................................ 3-18
Sidestand, checking an d lubricating........ 6-29
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 ...................... 6-37
Swingarm pivots, lubricating ................... 6-29TTail/brake light ......................................... 6-34
Throttle grip and cable, checking and lubricating ............................................. 6-28
Throttle grip free play, checking .............. 6-18
Tires ........................................................ 6-18
Tool kit....................................................... 6-2
Troubleshooting ...................................... 6-40
Troubleshooting charts............................ 6-42
Turn signal indicator light .......................... 3-1
Turn signal light bulb, replacing .............. 6-35
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