2010 YAMAHA WR 250R maintenance

PERIODIC MAINTENANCE AND ADJUSTMENT
6-37
6
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 placinga jack either under each side of the
frame in front of the rear wheel or under
each side of the swingarm.
EAU24360
Front wheel
EAU49330
To remove the front wheel
WARNING
EWA10821
To avoid injury, securely support the
vehicle so there is no danger of it
falling 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
U32DE4E0.book Page 37 Monday, December 14, 2009 2:24 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-38
6 2. Lift the front wheel off the ground
according to the procedure on
page 6-37.
3. Remove the axle nut.
4. Pull the wheel axle out, and then
remove the wheel. NOTICE: Do
not apply the brake after the
wheel has been removed to-
gether with the brake disc, oth-
erwise the brake pads will be
forced shut.
[ECA11071]
EAU49340
To install the front wheel
1. Lift the wheel up between the fork
legs.
TIPMake sure that there is enough space
between the brake pads before install-
ing the brake caliper onto the brake
disc.2. Insert the wheel axle.
3. Install the axle nut.
4. Lower the front wheel so that it is
on the ground, and then put the
sidestand down.
5. Tighten the axle nut and the wheel
axle pinch bolts to their specified
torques, and then install the rubber
cap.
6. Push down hard on the handlebar
several times to check for proper
fork operation.
EAU25080
Rear wheel
EAU45182
To remove the rear wheel
WARNING
EWA10821
To avoid injury, securely support the
vehicle so there is no danger of it
falling over.1. Loosen the axle nut.
2. Lift the rear wheel off the ground
according to the procedure on
page 6-37.
3. Remove the axle nut and washer.
4. Loosen the locknut on each side of
the swingarm.
1. Front wheel axle pinch bolt
2. Wheel axle
1
2
Tightening torques:
Axle nut:
63 Nm (6.3 m·kgf, 46 ft·lbf)
Wheel axle pinch bolt:
23 Nm (2.3 m·kgf, 17 ft·lbf)
1. Axle nut
2. Washer
1
2
U32DE4E0.book Page 38 Monday, December 14, 2009 2:24 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-39
65. Turn the drive chain slack adjust-
ing bolts fully in direction (a).
6. Push the wheel forward, and then
remove the drive chain from the
rear sprocket.
TIPThe drive chain does not need to be
disassembled in order to remove and
install the rear wheel.7. While supporting the brake caliper,
pull the wheel axle out.8. Remove the wheel. NOTICE: Do
not apply the brake after the
wheel has been removed to-
gether with the brake disc, oth-
erwise the brake pads will be
forced shut.
[ECA11071]
EAU45191
To install the rear wheel
1. Install the wheel and the brake cal-
iper bracket by inserting the wheel
axle from the left-hand side.TIP

Make sure that the retainer on the
brake caliper bracket is inserted
into the slot in the swingarm.


Make sure that there is enough
space between the brake pads be-
fore installing the wheel.
2. Install the drive chain onto the rear
sprocket.
3. Install the washer and the axle nut.
4. Lower the rear wheel so that it is
on the ground, and then put the
sidestand down.
5. Adjust the drive chain slack. (See
page 6-25.)
6. Tighten the axle nut to the speci-
fied torque.
1. Drive chain slack adjusting bolt
2. Locknut
3. Brake caliper
12
3 (a)
1. Wheel axle
1
1. Brake caliper bracket
2. Retainer
3. Slot
1
2
3
U32DE4E0.book Page 39 Monday, December 14, 2009 2:24 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-40
6
EAU25871
Troubleshooting Although Yamaha motorcycles receive
a thorough inspection before shipment
from the factory, trouble may occur dur-
ing operation. Any problem in the fuel,
compression, or ignition systems, for
example, can cause poor starting and
loss of power.
The following troubleshooting charts
represent quick and easy procedures
for checking these vital systems your-
self. However, should your motorcycle
require any repair, take it to a Yamaha
dealer, whose skilled technicians have
the necessary tools, experience, and
know-how to service the motorcycle
properly.
Use only genuine Yamaha replace-
ment parts. Imitation parts may look like
Yamaha parts, but they are often inferi-
or, have a shorter service life and can
lead to expensive repair bills.
WARNING
EWA15141
When checking the fuel system, do
not smoke, and make sure there are
no open flames or sparks in the ar-
ea, including pilot lights from waterheaters or furnaces. Gasoline or
gasoline vapors can ignite or ex-
plode, causing severe injury or
property damage.
Tightening torque:
Axle nut:
125 Nm (12.5 m·kgf, 90 ft·lbf)
U32DE4E0.book Page 40 Monday, December 14, 2009 2:24 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-41
6
EAU42131
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 compression.
Operate the electric starter.2. Compression
There is compression.
There is no compression.
Check the ignition.
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.
Have a Yamaha dealer
check the vehicle.
The engine does not start.
Check the battery.
Operate the electric starter.4. Battery
The engine turns over
quickly.
The engine turns over
slowly.
The battery is good.Check the battery lead connections,
and charge the battery if necessary.
DryWet
Operate the electric starter.
U32DE4E0.book Page 41 Monday, December 14, 2009 2:24 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-42
6 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.
TIPIf 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.
U32DE4E0.book Page 42 Monday, December 14, 2009 2:24 PM

INDEXAAir filter element and check hose,
cleaning .............................................. 6-16
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 ............................................ 3-10
Brake lever free play, adjusting............. 6-22
Brake light switches .............................. 6-23
Brake pedal ........................................... 3-10
Brake pedal, checking and
lubricating ........................................... 6-29CCables, 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 .......... 3-2DDimmer switch ........................................ 3-9
Drive chain, cleaning and lubricating .... 6-27
Drive chain slack ................................... 6-25EEngine break-in ....................................... 5-3
Engine idling speed............................... 6-17
Engine oil and oil filter element ............. 6-10
Engine stop switch .................................. 3-9
Engine trouble warning light.................... 3-3EXUP system ....................................... 3-18
FFront and rear brake pads, checking .... 6-23
Front fork, adjusting .............................. 3-14
Front fork, bleeding............................... 3-16
Front fork, checking .............................. 6-30
Fuel....................................................... 3-11
Fuel consumption, tips for reducing........ 5-3
Fuel level warning light ........................... 3-2
Fuel tank cap ........................................ 3-11
Fuses, replacing ................................... 6-32HHandlebar switches ................................ 3-8
Headlight bulb, replacing ...................... 6-33
Helmet holder ....................................... 3-14
High beam indicator light ........................ 3-2
Horn switch ............................................. 3-9IIdentification numbers ............................ 9-1
Ignition circuit cut-off system ................ 3-19
Indicator and warning lights .................... 3-2LLicense plate light bulb, replacing ........ 6-36MMain switch/steering lock........................ 3-1
Maintenance and lubrication, periodic .... 6-3
Maintenance, emission control system... 6-2
Matte color, caution ................................ 7-1
Model label ............................................. 9-1
Multi-function display .............................. 3-3NNeutral indicator light .............................. 3-2PPanels, removing and installing .............. 6-7Parking .................................................... 5-4
Part locations .......................................... 2-1
SSafety information ................................... 1-1
Seat ....................................................... 3-13
Shifting .................................................... 5-2
Shift pedal ............................................. 3-10
Shift pedal, checking ............................. 6-23
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 .................... 6-37
Swingarm pivots, lubricating ................. 6-29TTail/brake light ....................................... 6-35
Throttle cable free play, checking ......... 6-18
Throttle grip and cable, checking and
lubricating ........................................... 6-28
Tires ...................................................... 6-19
Tool kit..................................................... 6-1
Troubleshooting .................................... 6-40
Troubleshooting charts.......................... 6-41
Turn signal indicator light ........................ 3-2
Turn signal light bulb, replacing ............ 6-35
Turn signal switch ................................... 3-9VValve clearance..................................... 6-18
Vehicle identification number .................. 9-1
U32DE4E0.book Page 1 Monday, December 14, 2009 2:24 PM