2011 YAMAHA WR 250R maintenance

PERIODIC MAINTENANCE AND ADJUSTMENT
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9 3. Insert a new bulb into the socket,
push it in, and then turn it clock-
wise until it stops.
4. Install the lens by installing the
screw. NOTICE: Do not over-
tighten the screw, otherwise the
lens may break.
[ECA11191]

EAU24313
Replacing the license plate
light bulb 1. Remove the license plate light unit
by removing the screws.
2. Remove the license plate light bulb
socket (together with the bulb) by
pulling it out.3. Remove the burnt-out bulb by pull-
ing it out.
4. Insert a new bulb into the socket.
5. Install the socket (together with the
bulb) by pushing it in.
6. Install the license plate light unit by
installing the screws.
1. Turn signal light bulb
1
1. Screw
1
1. License plate light unit
2. License plate light bulb socket
12
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EAU45222
Replacing an auxiliary light
bulb If the auxiliary light bulb burns out, re-
place it as follows.
1. Remove the headlight unit. (See
page 6-35.)
2. Remove the auxiliary light socket
(together with the bulb) by pulling it
out.
3. Remove the burnt-out bulb by pull-
ing it out.
4. Insert a new bulb into the socket.
5. Install the auxiliary light socket (to-
gether 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 theframe in front of the rear wheel or under
each side of the swingarm.
1. Auxiliary light bulb socket
1
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EAU24360
Front wheel
EAU49331
To remove the front wheel
WARNING
EWA10821
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.
2. Lift the front wheel off the ground
according to the procedure in the
previous section “Supporting the
motorcycle”.
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]

EAU49341
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 brakedisc.
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 front
wheel axle pinch bolts to the spec-
ified torques, and then install the
rubber cap.
6. Push down hard on the handlebar
several times to check for proper
fork operation.
1. Front wheel axle pinch bolt
2. Axle nut
3. Rubber cap
23
1
1. Front wheel axle pinch bolt
2. Wheel axle
1
2
Tightening torques:
Axle nut:
63 Nm (6.3 m·kgf, 46 ft·lbf)
Front wheel axle pinch bolt:
23 Nm (2.3 m·kgf, 17 ft·lbf)
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EAU25080
Rear wheel
EAU45182
To remove the rear wheel
WARNING
EWA10821
To avoid injury, securely support the
vehicle so there is no danger of itfalling over.
1. Loosen the axle nut.
2. Lift the rear wheel off the ground
according to the procedure on
page 6-38.
3. Remove the axle nut and washer.
4. Loosen the locknut on each side of
the swingarm.5. 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 andinstall 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]

EAU45192
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
1. Axle nut
2. Washer1
2
1. Drive chain slack adjusting bolt
2. Locknut
3. Brake caliper
12
3 (a)
1. Wheel axle
1
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9 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 6-27.)
6. Tighten the axle nut, and then the
locknuts to their specified torques.
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 water
1. Brake caliper bracket
2. Retainer
3. Slot
1
2
3
Tightening torques:
Axle nut:
125 Nm (12.5 m·kgf, 90 ft·lbf)
Locknut:
16 Nm (1.6 m·kgf, 12 ft·lbf)
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9heaters or furnaces. Gasoline or
gasoline vapors can ignite or ex-
plode, causing severe injury or
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EAU42133
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.
DryWet
Operate the electric starter.
Check the battery lead connections,
and have a Yamaha dealer charge
the battery if necessary.
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9Engine 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 hissingsound 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 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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