2009 YAMAHA WR 250R engine

PERIODIC MAINTENANCE AND ADJUSTMENT
6-42
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9 Engine overheating
WARNING

EWA10400

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.

After removing the radiator cap retaining bolt, place a thick rag, like a towel, over the radiator cap, and then
slowly rotate the cap counterclockwise to the detent to allow any residual pressure to escape. When the hissing
sound has stopped, press down on the cap while turning it counterclockwise, and then remove the cap.
TIP

If coolant is not available, tap water can be temporarily used instead, provided that it is changed to the recommended coolant
as 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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9

MOTORCYCLE CARE AND STORAGE
EAU37833
Matte color caution
NOTICE

ECA15192
Some models are equipped with
matte colored finished parts. Be
sure to consult a Yamaha dealer for
advice on what products to use be-
fore cleaning the vehicle. Using a
brush, harsh chemical products or
cleaning compounds when cleaning
these parts will scratch or damage
their surface. Wax also should not
be applied to any matte colored fin-
ished parts.
EAU26004
Care
While the open design of a motorcycle
reveals the attractiveness of the tech-
nology, it also makes it more vulnera-
ble. Rust and corrosion can develop
even if high-quality components are
used. A rusty exhaust pipe may go un-
noticed on a car, however, it detracts
from the overall appearance of a motor-
cycle. Frequent and proper care does
not only comply with the terms of the
warranty, but it will also keep your mo-
torcycle looking good, extend its life
and optimize its performance.
Before cleaning
1. Cover the muffler outlet with a
plastic bag after the engine has
cooled down.
2. Make sure that all caps and covers
as well as all electrical couplers
and connectors, including the
spark plug cap, are tightly in-
stalled.
3. Remove extremely stubborn dirt,
like oil burnt onto the crankcase,
with a degreasing agent and a
brush, but never apply such prod-ucts onto seals, gaskets, sprock-
ets, the drive chain and wheel
axles. Always rinse the dirt and de-
greaser off with water.
Cleaning
NOTICE

ECA10772

Avoid using strong acidic wheel
cleaners, especially on spoked
wheels. If such products are
used on hard-to-remove dirt, do
not leave the cleaner on the af-
fected area any longer than in-
structed. Also, thoroughly rinse
the area off with water, immedi-
ately dry it, and then apply a cor-
rosion protection spray.

Improper cleaning can damage
plastic parts (such as cowlings,
panels, windshields, headlight
lenses, meter lenses, etc.) and
the mufflers. Use only a soft,
clean cloth or sponge with wa-
ter to clean plastic. However, if
the plastic parts cannot be thor-
oughly cleaned with water, di-
luted mild detergent with water
may be used. Be sure to rinse

MOTORCYCLE CARE AND STORAGE
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78
9 off any detergent residue using
plenty of water, as it is harmful
to plastic parts.


Do not use any harsh chemical
products on plastic parts. Be
sure to avoid using cloths or
sponges which have been in
contact with strong or abrasive
cleaning products, solvent or
thinner, fuel (gasoline), rust re-
movers or inhibitors, brake flu-
id, antifreeze or electrolyte.

Do not use high-pressure wash-
ers or steam-jet cleaners since
they cause water seepage and
deterioration in the following ar-
eas: seals (of wheel and swing-
arm bearings, fork and brakes),
electric components (couplers,
connectors, instruments,
switches and lights), breather
hoses and vents.

For motorcycles equipped with
a windshield: Do not use strong
cleaners or hard sponges as
they will cause dulling or
scratching. Some cleaning com-
pounds for plastic may leavescratches on the windshield.
Test the product on a small hid-
den part of the windshield to
make sure that it does not leave
any marks. If the windshield is
scratched, use a quality plastic
polishing compound after
washing.
After normal use
Remove dirt with warm water, a mild
detergent, and a soft, clean sponge,
and then rinse thoroughly with clean
water. Use a toothbrush or bottlebrush
for hard-to-reach areas. Stubborn dirt
and insects will come off more easily if
the area is covered with a wet cloth for
a few minutes before cleaning.
After riding in the rain, near the sea oron salt-sprayed roadsSince sea salt or salt sprayed on roads
during winter are extremely corrosive in
combination with water, carry out the
following steps after each ride in the
rain, near the sea or on salt-sprayed
roads.
TIP

Salt sprayed on roads in the winter may
remain well into spring.
1. Clean the motorcycle with cold wa-
ter and a mild detergent, after the
engine has cooled down.
NOTICE:
Do not use warm water
since it increases the corrosive
action of the salt.
[ECA10791]

2. Apply a corrosion protection spray
on all metal, including chrome- and
nickel-plated, surfaces to prevent
corrosion.
After cleaning
1. Dry the motorcycle with a chamois
or an absorbing cloth.
2. Immediately dry the drive chain
and lubricate it to prevent it from
rusting.
3. Use a chrome polish to shine
chrome, aluminum and stain-
less-steel parts, including the ex-
haust system. (Even the thermally
induced discoloring of stain-
less-steel exhaust systems can be
removed through polishing.)

MOTORCYCLE CARE AND STORAGE
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9
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 andpedals 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.
TIP

Make any necessary repairs before
storing the motorcycle.

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SPECIFICATIONS
EAU2633T

Dimensions:
Overall length:
2180 mm (85.8 in)
Overall width:
810 mm (31.9 in)
Overall height:
1230 mm (48.4 in)
Seat height:
930 mm (36.6 in)
Wheelbase:
1420 mm (55.9 in)
Ground clearance:
300 mm (11.81 in)
Minimum turning radius:
2300 mm (90.6 in)
Weight:
With oil and fuel:
134.0 kg (295 lb)
Engine:
Engine type:
Liquid cooled 4-stroke, DOHC
Cylinder arrangement:
Forward-inclined single cylinder
Displacement:
250.0 cm
3

Bore
×
stroke:
77.0
×
53.6 mm (3.03
×
2.11 in)
Compression ratio:
11.80 :1
Starting system:
Electric starter
Lubrication system:
Wet sump

Engine oil:
Type:
SAE 10W-30, SAE 10W-40, SAE 10W-50,
SAE 15W-40, SAE 20W-40 or SAE
20W-50
Recommended engine oil grade:
API service SG type or higher, JASO stan-
dard MA
Engine oil quantity:
Without oil filter element replacement:
1.30 L (1.37 US qt, 1.14 Imp.qt)
With oil filter element replacement:
1.40 L (1.48 US qt, 1.23 Imp.qt)
Cooling system:
Coolant reservoir capacity (up to the maxi-
mum level mark):
0.25 L (0.26 US qt, 0.22 Imp.qt)
Radiator capacity (including all routes):
0.90 L (0.95 US qt, 0.79 Imp.qt)
Air filter:
Air filter element:
Wet element
Fuel:
Recommended fuel:
Premium unleaded gasoline only
Fuel tank capacity:
7.6 L (2.01 US gal, 1.67 Imp.gal)
Fuel reserve amount:
2.1 L (0.55 US gal, 0.46 Imp.gal)
Fuel injection:
Throttle body:
Type/quantity:
38EIS/1
Spark plug (s):
Manufacturer/model:
NGK/CR9EK
Spark plug gap:
0.6–0.7 mm (0.024–0.028 in)
Clutch:
Clutch type:
Wet, multiple-disc
Transmission:
Primary reduction system:
Spur gear
Primary reduction ratio:
78/25 (3.120)
Secondary reduction system:
Chain drive
Secondary reduction ratio:
43/13 (3.308)
Transmission type:
Constant mesh 6-speed
Operation:
Left foot operation
-20 -10 0
10 20 30
40
50 ˚C
SAE 10W-30
SAE 15W-40SAE 20W-40SAE 20W-50
SAE 10W-40SAE 10W-50

SPECIFICATIONS
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9Battery:

Model:
YTZ7S
Voltage, capacity:
12 V, 6.0 Ah
Headlight:
Bulb type:
Halogen bulb
Bulb voltage, wattage
×
quantity:
Headlight:
12 V, 60 W/55 W
Tail/brake light:
LED
Front turn signal light:
12 V, 10.0 W
×
2
Rear turn signal light:
12 V, 10.0 W
×
2
Auxiliary light:
12 V, 5.0 W
×
1
License plate light:
12 V, 5.0 W
Meter lighting:
EL (Electroluminescent)
Neutral indicator light:
LED
High beam indicator light:
LED
Turn signal indicator light:
LED
Fuel level warning light:
LED
Coolant temperature warning light:
LEDEngine trouble warning light:
LED

Fuses:
Main fuse:
30.0 A
Headlight fuse:
15.0 A
Signaling system fuse:
10.0 A
Ignition fuse:
7.5 A
Radiator fan fuse:
7.5 A
Fuel injection system fuse:
7.5 A
Backup fuse:
7.5 A

INDEX
A
Air filter element and check hose,
cleaning .................................................6-16
Auxiliary light bulb, replacing ...................6-36
B
Battery .....................................................6-31
Brake and clutch levers, checking and
lubricating ..............................................6-28
Brake fluid, changing ...............................6-25
Brake fluid level, checking .......................6-24
Brake lever ..............................................3-10
Brake lever free play, adjusting ...............6-22
Brake pedal .............................................3-10
Brake pedal, checking and lubricating .....6-28
C
Cables, checking and lubricating .............6-27
Care ...........................................................7-1
Catalytic converter ...................................3-13
Clutch lever ................................................3-9
Clutch lever free play, adjusting ..............6-21
Coolant ....................................................6-13
Coolant temperature warning light .............3-2
D
Dimmer switch ...........................................3-9
Drive chain, cleaning and lubricating .......6-26
Drive chain slack .....................................6-25
E
Engine break-in .........................................5-3
Engine idling speed .................................6-18
Engine oil and oil filter element ................6-10
Engine stop switch.....................................3-9
Engine trouble warning light ......................3-3
EXUP system ..........................................3-18
F
Front and rear brake pads, checking....... 6-23
Front fork, adjusting................................. 3-14
Front fork, bleeding ................................. 3-16
Front fork, checking ................................. 6-29
Fuel ......................................................... 3-11
Fuel consumption, tips for reducing .......... 5-3
Fuel level warning light .............................. 3-2
Fuel tank cap ........................................... 3-11
Fuses, replacing ...................................... 6-32
H
Handlebar switches ................................... 3-8
Headlight bulb, replacing ......................... 6-33
Helmet holder .......................................... 3-14
High beam indicator light ........................... 3-2
Horn switch................................................ 3-9
I
Identification numbers ............................... 9-1
Ignition circuit cut-off system ................... 3-19
Indicator and warning lights....................... 3-2
K
Key identification number .......................... 9-1
L
License plate light bulb, replacing ........... 6-35
M
Main switch/steering lock .......................... 3-1
Maintenance and lubrication, periodic ....... 6-3
Maintenance, emission control system ..... 6-2
Matte color, caution ................................... 7-1
Model label ................................................ 9-2
Multi-function display ................................. 3-3
N
Neutral indicator light................................. 3-2
P
Panels, removing and installing ................ 6-7
Parking ...................................................... 5-4
Part locations ............................................ 2-1
R
Rear brake light switch, adjusting ........... 6-23
Rear suspension, lubricating ................... 6-29
S
Safety information ..................................... 1-1
Seat ......................................................... 3-13
Shifting ...................................................... 5-2
Shift pedal ............................................... 3-10
Shock absorber assembly, adjusting ...... 3-17
Sidestand ................................................ 3-19
Sidestand, checking and lubricating........ 6-29
Spark plug, checking ................................. 6-9
Specifications ............................................ 8-1
Starting the engine .................................... 5-1
Start switch................................................ 3-9
Steering, checking................................... 6-30
Storage...................................................... 7-3
Supporting the motorcycle ...................... 6-36
T
Tail/brake light ......................................... 6-34
Throttle cable free play, checking ........... 6-18
Throttle grip and cable, checking and
lubricating ............................................. 6-27
Tires ........................................................ 6-19
Tool kit....................................................... 6-1
Troubleshooting ...................................... 6-39
Troubleshooting charts............................ 6-41
Turn signal indicator light .......................... 3-2
Turn signal light bulb, replacing .............. 6-35
Turn signal switch ..................................... 3-9