2015 YAMAHA WR 250R engine

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/steering lock................. 3-1
Indicator lights and warning lights ... 3-2
Multi-function display ....................... 3-3
Handlebar switches ......................... 3-8
Clutch lever...................................... 3-9
Shift pedal....... ............................. .. 3-10
Brake lever .................................... 3-10
Brake pedal ................................... 3-10
Fuel tank cap ................................. 3-11
Fuel................................................ 3-11
Catalytic converter ......................... 3-13
Seat ............................................... 3-13
Helmet holder ................................ 3-14
Adjusting the front fork................... 3-14
Front fork bleeding......................... 3-16
Adjusting the shock absorber
assembly .................................... 3-17
EXUP system ................................ 3-18
Sidestand....................................... 3-19
Ignition circuit cut-of f system ......... 3-19 FOR YOUR SAFETY – PRE-
OPERATION CHECKS
...................... 4-1
OPERATION AND IMPORTANT
RIDING POINTS ................................. 5-1
Starting the engine .......................... 5-1
Shifting ............................................ 5-2
Tips for reducing fuel consumption ................................ 5-3
Engine break-in ............................... 5-3
Parking ............................................ 5-4
PERIODIC MAINTENANCE AND
ADJUSTMENT ................................... 6-1
Owner’s tool kit................................ 6-2
Periodic maintenance chart for the emission contro l system ........ 6-3
General maintenance and lubrication chart ........................... 6-4
Removing and installing panels ...... 6-8
Checking the spark plug................ 6-11
Engine oil and oil filter element ..... 6-12
Coolant .......................................... 6-14
Cleaning the air filter element and check hose.......................... 6-17
Adjusting the engine idling speed ......................................... 6-19
Checking the throttle grip free
play ............................................ 6-19
Valve clearance............................. 6-20
Tires .............................................. 6-20 Spoke wheels ................................ 6-22
Adjusting the clutch lever free
play ............................................. 6-22
Adjusting the brake lever free play ............................................. 6-23
Checking the shift pedal ................ 6-24
Brake light switches ....................... 6-25
Checking the front and rear brake pads.................................. 6-25
Checking the brake fluid level ........ 6-26
Changing the brake fluid ................ 6-27
Drive chain slack............................ 6-27
Cleaning and lubricating the drive chain .................................. 6-28
Checking and lubricating the cables ......................................... 6-29
Checking and lubricating the
throttle grip and cable ................. 6-29
Checking and lubricating the brake and clutch levers .............. 6-30
Checking and lubricating the brake pedal................................. 6-30
Checking and lubricating the
sidestand .................................... 6-31
Lubricating the swingarm pivots .... 6-31
Checking the front fork................... 6-31
Checking the steering .................... 6-32
Checking the wheel bearings......... 6-32
Battery ........................................... 6-33
Replacing the fuses ....................... 6-34
Replacing the headlight bulb ......... 6-3532D-9-ED.book 1 ページ ２０１４年７月１日　火曜日　午前１０時２分

SAFETY INFORMATION
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tice riding your motorcycle
where there is no traffic until you
have become thoroughly famil-
iar with the motorcycle and all of
its controls.

Many accidents have been caused
by error of the motorcycle opera-
tor. A typical error made by the op-
erator is veering wide on a turn
due to excessive speed or under-
cornering (insufficient lean angle
for the speed).
Always obey the speed limit and
never travel faster than warrant-
ed by road and traffic conditions.
Always signal before turning or changing lanes. Make sure that
other motorists can see you.

The posture of the operator and
passenger is important for proper
control.
The operator should keep bothhands on the handlebar and
both feet on the operator foot-
rests during operation to main-
tain control of the motorcycle.
The passenger should always hold onto the operator, the seat
strap or grab bar, if equipped, with both hands and keep both
feet on the passenger footrests.
Never carry a passenger unless
he or she can firmly place both
feet on the passenger footrests.

Never ride under the influence of
alcohol or other drugs.
Protective Apparel
The majority of fatalities from motorcy-
cle accidents are the result of head in-
juries. The use of a safety helmet is the
single most critical factor in the preven-
tion or reduction of head injuries.

Always wear an approved helmet.

Wear a face shield or goggles.
Wind in your unprotected eyes
could contribute to an impairment
of vision that could delay seeing a
hazard.

The use of a jacket, heavy boots,
trousers, gloves, etc., is effective in
preventing or reducing abrasions
or lacerations.

Never wear loose-fitting clothes,
otherwise they could catch on the
control levers, footrests, or wheels
and cause injury or an accident.

Always wear protective clothing that covers your legs, ankles, and
feet. The engine or exhaust sys-
tem become very hot during or af-
ter operation and can cause burns.

A passenger should also observe
the above precautions.
Avoid Carbon Monoxide Poisoning
All engine exhaust contains carbon
monoxide, a deadly gas. Breathing car-
bon monoxide can cause headaches,
dizziness, drowsiness, nausea, confu-
sion, and eventually death.
Carbon Monoxide is a colorless, odor-
less, tasteless gas which may be pres-
ent even if you do not see or smell any
engine exhaust. Deadly levels of car-
bon monoxide can collect rapidly and
you can quickly be overcome and un-
able to save yourself. Also, deadly lev-
els of carbon monoxide can linger for
hours or days in enclosed or poorly
ventilated areas. If you experience any
symptoms of carbon monoxide poison-
ing, leave the area immediately, get
fresh air, and SEEK MEDICAL TREAT-
MENT.

Do not run engine indoors. Even if
you try to ventilate engine exhaust
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SAFETY INFORMATION
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12 with fans or open windows and
doors, carbon monoxide can rap-
idly reach dangerous levels.

Do not run engine in poorly venti-
lated or partially enclosed areas
such as barns, garages, or car-
ports.

Do not run engine outdoors where
engine exhaust can be drawn into
a building through openings such
as windows and doors.
Loading
Adding accessories or cargo to your
motorcycle can adversely affect stabili-
ty and handling if the weight distribution
of the motorcycle is changed. To avoid
the possibility of an accident, use ex-
treme caution when adding cargo or
accessories to your motorcycle. Use
extra care when riding a motorcycle
that has added cargo or accessories.
Here, along with the information about
accessories below, are some general
guidelines to follow if loading cargo to
your motorcycle:
The total weight of the operator, pas-
senger, accessories and cargo must
not exceed the maximum load limit. Operation of an overloaded vehicle
could cause an accident.
When loading within this weight limit,
keep the following in mind:

Cargo and accessory weight
should be kept as low and close to
the motorcycle as possible. Se-
curely pack your heaviest items as
close to the center of the vehicle as
possible and make sure to distrib-
ute the weight as evenly as possi-
ble on both sides of the motorcycle
to minimize imbalance or instabili-
ty.

Shifting weights can create a sud-
den imbalance. Make sure that ac-
cessories and cargo are securely
attached to the motorcycle before
riding. Check accessory mounts
and cargo restraints frequently.
Properly adjust the suspension
for your load (suspension-ad-
justable models only), and
check the condition and pres-
sure of your tires. Never attach any large or heavy
items to the handlebar, front
fork, or front fender. These
items, including such cargo as
sleeping bags, duffel bags, or
tents, can create unstable han-
dling or a slow steering re-
sponse.

This vehicle is not designed to
pull a trailer or to be attached to
a sidecar.
Genuine Yamaha Accessories
Choosing accessories for your vehicle
is an important decision. Genuine
Yamaha accessories, which are avail-
able only from a Yamaha dealer, have
been designed, tested, and approved
by Yamaha for use on your vehicle.
Many companies with no connection to
Yamaha manufacture parts and acces-
sories or offer other modifications for
Yamaha vehicles. Yamaha is not in a
position to test the products that these
aftermarket companies produce.
Therefore, Yamaha can neither en-
dorse nor recommend the use of ac-
cessories not sold by Yamaha or
modifications not specifically recom-
Maximum load: 185 kg (408 lb)
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SAFETY INFORMATION
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mended by Yamaha, even if sold and
installed by a Yamaha dealer.
Aftermarket Parts, Accessories,
and Modifications
While you may find aftermarket prod-
ucts similar in design and quality to
genuine Yamaha accessories, recog-
nize that some aftermarket accessories
or modifications are not suitable be-
cause of potential safety hazards to you
or others. Installing aftermarket prod-
ucts or having other modifications per-
formed to your vehicle that change any
of the vehicle’s design or operation
characteristics can put you and others
at greater risk of serious injury or death.
You are responsible for injuries related
to changes in the vehicle.
Keep the following guidelines in mind,
as well as those provided under “Load-
ing” when mounting accessories.

Never install accessories or carry
cargo that would impair the perfor-
mance of your motorcycle. Care-
fully inspect the accessory before
using it to make sure that it does
not in any way reduce ground
clearance or cornering clearance, limit suspension travel, steering
travel or control operation, or ob-
scure lights or reflectors.
Accessories fitted to the handle-
bar or the front fork area can
create instability due to improper
weight distribution or aerody-
namic changes. If accessories
are added to the handlebar or
front fork area, they must be as
lightweight as possible and
should be kept to a minimum.
Bulky or large accessories may seriously affect the stability of
the motorcycle due to aerody-
namic effects. Wind may at-
tempt to lift the motorcycle, or
the motorcycle may become un-
stable in cross winds. These ac-
cessories may also cause
instability when passing or being
passed by large vehicles.
Certain accessories can dis- place the operator from his or
her normal riding position. This
improper position limits the free-
dom of movement of the opera-
tor and may limit control ability,
therefore, such accessories are not recommended.

Use caution when adding electri-
cal accessories. If electrical acces-
sories exceed the capacity of the
motorcycle’s electrical system, an
electric failure could result, which
could cause a dangerous loss of
lights or engine power.
Aftermarket Tires and Rims
The tires and rims that came with your
motorcycle were designed to match the
performance capabilities and to provide
the best combination of handling, brak-
ing, and comfort. Other tires, rims, siz-
es, and combinations may not be
appropriate. Refer to page 6-20 for tire
specifications and more information on
replacing your tires.
Transporting the Motorcycle
Be sure to observe following instruc-
tions before transporting the motorcy-
cle in another vehicle.

Remove all loose items from the
motorcycle.

Check that the fuel cock (if
equipped) is in the “OFF” position
and that there are no fuel leaks.
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DESCRIPTION
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EAU10421
Right view
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1. Rear brake fluid reservoir (page 6-26)
2. Air filter element (page 6-17)
3. Rear brake light switch (page 6-25)
4. Fuel tank cap (page 3-11)
5. Bleed screw (page 3-16)
6. Engine oil filler cap (page 6-12)
7. Engine oil level check window (page 6-12)
8. Brake pedal (page 3-10) 9. Shock absorber assembly r
ebound damping force adjusting knob
(page 3-17)
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INSTRUMENT AND CONTROL FUNCTIONS
EAU10462
Main switch/steering lockThe main switch/steering lock controls
the ignition and lighting systems, and is
used to lock the steering. The various
positions are described below.
EAU38531
ON
All electrical circui ts are supplied with
power; the meter lighting, taillight, li-
cense plate light and auxiliary light
come on, and the engine can be start-
ed. The key cannot be removed.TIPThe headlight comes on automatically
when the engine is started and stays on
until the key is turned to “OFF”, even if
the engine stalls.
EAU10662
OFF
All electrical systems are off. The key
can be removed.
WARNING
EWA10062
Never turn the key to “OFF” or
“LOCK” while the vehicle is moving.
Otherwise the electrical systems will
be switched off, which may result inloss of control or an accident.
EAU10685
LOCK
The steering is locked, and all electrical
systems are off. The key can be re-
moved. To lock the steering
1. Turn the handlebars all the way to
the left.
2. Push the key in from the “OFF” po- sition, and then turn it to “LOCK”
while still pushing it.
3. Remove the key.1. Push.
2. Turn.12
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INSTRUMENT AND CONTROL FUNCTIONS
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To unlock the steering
Push the key in, and then turn it to
“OFF” while still pushing it.
EAU49396
Indicator lights and warning
lights
EAU11021
Turn signal indicator light “ ”
This indicator light flashes when the
turn signal switch is pushed to the left or
right.
EAU11061
Neutral indicator light “ ”
This indicator light comes on when the
transmission is in the neutral position.
EAU11081
High beam indicator light “ ”
This indicator light comes on when the
high beam of the headlight is switched
on.
EAU11354
Fuel level warning light “ ”
This warning light comes on when the
fuel level drops below approximately
2.1 L (0.55 US gal, 0.46 Imp.gal). When
this occurs, refuel as soon as possible.
The electrical circuit of the warning light
can be checked by turning the key 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 key is turned to “ON”,
or if the warning light remains on, have
a Yamaha dealer check the electrical
circuit.
EAU11447
Coolant temperature warning light
“”
This warning light comes on if the en-
gine overheats. If this occurs, stop the
engine immediately and allow the en-
gine to cool.
The electrical circuit of the warning light
1. Push.
2. Turn.12
1. Coolant temperature warning light “ ”
2. Fuel level warning light “ ”
3. Neutral indicator light “ ”
4. Turn signal indicator light “ ”
5. High beam indicator light “ ”
6. Engine trouble warning light “ ”
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INSTRUMENT AND CONTROL FUNCTIONS
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“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 key is turned to “ON”,
or if the warning light remains on, have
a Yamaha dealer check the electrical
circuit.
NOTICE
ECA10022
Do not continue to operate the en-gine if it is overheating.TIP
For radiator-fan-equipped vehi-
cles, the radiator fan(s) automati-
cally switch on or off according to
the coolant temperature in the ra-
diator.

If the engine overheats, see page6-44 for further instructions.
EAU11535
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 self-diagnosis system. (See page 3-8
for an explanation of the self-diagnosis
device.)
The electrical circuit of the warning light
can be checked by turning the key 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 key is turned to “ON”,
or if the warning light remains on, have
a Yamaha dealer check the electrical
circuit.
EAU45279
Multi-function display
WARNING
EWA12313
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. “RESET” button
2. “SELECT 1” button
3. “SELECT 2” button
4. Clock/stopwatch
5. Speedometer
6. Odometer/tripmeter/fuel reserve tripmeter
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